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卷九十一 志第四十四 河渠一

Volume 91 Treatises 44: Rivers and Canals 1

Chapter 91 of 宋史 · History of Song
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1
The Yellow River — Part One
2
西 西宿宿 西 西
From antiquity the Yellow River has been a scourge upon China, and the "Rivers and Canals Treatise" in the Records of the Grand Historian sets forth its history at length. Yet even when one traces it to its ultimate source, the account given by Zhang Qian, Marquis of Bowang, still falls short of the truth. In the twenty-seventh year of the Zhiyuan era (1290), during the Great Yuan, Our Emperor Shizu ordered the academician Pucha Duoshi to travel west to the furthest source of the river, and only then were its true details ascertained. Its source lies today on the southern frontier of Duo Gan Si in the Western Territories, at a place called the Sea of Starry Constellations. Between four mountains nearly a hundred springs pool into a lake; from the heights they look like stars strewn across the sky, and so it was named. The stream flows out and gathers again in Lake Hala. Where it issues eastward it is called the Chibin River; joining the Hulan and Yelishu rivers, it runs northeast as the Nine-Crossings River, its waters still clear enough for horsemen to wade across. Threading through the mountains, it emerges at the western capital called Kuoji or Kuoti, joins the Naling River — the so-called "slender Yellow River" — and by then the current has already turned muddy. Winding south of Kunlun, it bends eastward and joins the Qilimachu River, then curves north of Kunlun again. From the lands of Guide and Xining it reaches Jishi, passes Hezhou and Lintao, joins the Tao River, and flows northeast to Lanzhou — where it first enters the Chinese heartland. It sweeps north around Shuofang, Beidi, and Shang commanderies and runs east, passes the three Accept-the-Surrender fortresses and Fengdong Sheng Prefecture, turns south, issues through Longmen, crosses Hezhong, and reaches Tong Pass. Issuing east through Sanmen and Jijin it becomes the Meng Ford, passes Hulao, and then charges out across the flatlands. It swallows hundreds of tributaries, its force growing ever more violent. With no towering mountains or massive reefs to hold it in check, it bursts and spills to the sides, abandoning the course traced by Yu the Great. From Hulao eastward to the sea mouth — two or three thousand li — the region has constantly suffered its ravages, and under the Song the affliction was especially grave. Beginning at Huatai and Dapi, it twice broke its banks in catastrophic floods and returned to the course laid down by Yu. At one point treacherous ministers insisted that the river must be forced back into its former channel, and the empire exhausted its resources trying to dam it. Time after time it was dammed and time after time it broke through. After the court crossed south, the disaster was passed on to the Jin of the Golden Source — all because no one would yield to the river's nature of seeking lower ground and channel it accordingly.
3
The Yangtze, the Huai, the Luo, Bian, Heng, and Zhang rivers, and all the waters south of the Yangtze and Huai that serve shipping and irrigation — each is treated in turn and recorded in its own section. These form the "Rivers and Canals Treatise."
4
西
Once the river enters the Chinese heartland it runs west of the Taihang range, twisting through the mountains, and cannot yet do great harm. Once it clears Dapi and races east toward the sea across more than two thousand li of flat country, Yu's ancient course long buried, the waters have merged into a single stream held in only by embankments. In summer and autumn the seasonal rains gather a hundred rivers into one torrent, and the threat of breach and flood is never far off — yet the officials charged with river defense grew ever more adept at their work.
5
From the opening years of Later Zhou's Xiande reign, the river burst catastrophically at Yangliu in Dongping. Chief Minister Li Gu oversaw dike repairs from Yanggu to Zhangqiukou to hold the flood back, and the waters eased somewhat. But the broken channel never rejoined the old course; it split away as the Red River.
6
使 殿使
In the second year of Taizu's Qiande reign (964), envoys were sent to survey the river with plans to restore the ancient dikes. Advisers argued that the old channel could not be restored quickly and that the labor required would be enormous, and the plan was abandoned. The court merely ordered the populace to maintain the outer dikes as a buffer against the river's direct onslaught. Later the Red River broke through at Zhucun in Dongping, and seven prefectures were inundated once more. That autumn brought weeks of torrential rain. The river broke at Yangwu in Kaifeng prefecture; floods in Mengzhou destroyed the Zhongtan Bridge; Chan and Yun also reported breaches. An edict mobilized troops from the affected prefectures to make repairs. In the eighth month of the fourth year the river broke at Huazhou and destroyed Linghe County's main embankment. Taizu ordered Palace Front commander Han Chongyun, cavalry and infantry commander Wang Tingyi, and others to direct tens of thousands of soldiers and conscript laborers in the repair work, and exempted flood victims from the autumn land tax.
7
使 使
In the first month of the fifth year, with the dikes breaking again and again, the Emperor sent out multiple inspection teams and mobilized conscript labor from the capital districts for repairs. Thereafter this became annual routine — work always began in the first month and wrapped up by late spring. That same month an edict required the chief officials of Kaifeng, Daming, Yun, Chan, Hua, Meng, Pu, Qi, Zi, Cang, Di, Bin, De, Bo, Huai, Wei, Zheng, and other riverine prefectures to serve concurrently as their prefecture's river-dike commissioner — tightening control over corvée labor and underscoring the gravity of flood control.
8
使 使 宿 退
In the eleventh month of Kaibao 4 (971), the river broke at Chanyuan and flooded several prefectures. Local officials had failed to report promptly. Vice-prefect Yao Shu, Secretariat Master of Records, was executed in the marketplace, and Prefect Du Shenzhao was removed from office. In the first month of the fifth year an edict declared: "Along the Yellow, Bian, Qing, and Yu rivers, beyond the mulberry and jujube already required by statute, local officials shall compel the people to plant elm, willow, and whatever trees suit the soil. Households were ranked in five grades by wealth: the top grade planted fifty trees a year, each lower grade ten fewer. Those who wished to plant more than required were free to do so; orphans, widows, the childless, and the utterly alone were exempt. That month soldiers working the dikes at Chanzhou received cash and shoes, and conscript laborers were given tea. In the third month an edict read: "We are ever mindful that river and canal breaches bring great suffering to the people. Commissioner posts have been created to oversee the work, and officials at every level should be assigned to assist. Henceforth each of the seventeen prefectures including Kaifeng shall appoint one river-dike judicial officer, to be filled by the prefecture's vice-prefect; and if the vice-prefect post is vacant, the prefectural judicial officer shall serve instead." In the fifth month the river broke catastrophically at Puyang and again at Yangwu. An edict mobilized fifty thousand troops and conscript laborers from the affected prefectures and sent Yingzhou regiment commander Cao Han to supervise the repairs. Han tried to decline. Taizu told him: "The rains have not stopped, and we have word of another breach. For two nights I have burned incense and prayed to Heaven: if disaster must come, let it strike me alone and not reach the people. Han kowtowed and answered: "Duke Jing of Song was only a feudal lord, yet a single word of compassion made the disaster star retreat from its station. Your Majesty's concern reaches every soul under Heaven, and your prayer is so earnest — surely Heaven will be moved, and disaster will not come."
9
In the sixth month an edict declared: "In Chan, Pu, and neighboring prefectures the seasonal rains have fallen without cease, and the great river has become a scourge. Repeated breaches and floods have brought heavy suffering to the people. We have turned again and again to the ancient texts, studying every classic account of the waterways. What the Xia sovereign's records describe is guiding the river to the sea and dredging channels along the mountains — never forcing raging currents or piling up towering embankments. Since the Warring States, when private gain took precedence, old channels were dammed and diverted — the small blocking the great, private interest harming the public good. The system of the Nine Rivers was ruined, and flood disasters persisted through every dynasty. Any scholar or recluse versed in river engineering who knows how to dredge and channel the waters for a lasting solution — come to court and submit a memorial. Send it by post relay; we will review each proposal in turn. We shall read each submission ourselves, employ what is sound, and reward those whose counsel proves worthy." At that time Tian Gao, a recluse from eastern Lu, had compiled twelve chapters of the "Yu Meta-Classic." The Emperor heard of it, summoned him to court, and questioned him on flood control. Impressed by his counsel, Taizu was about to offer him office — but Tian pleaded that his parents were elderly and he must return home to care for them. The Emperor let him go. Han reached the river and personally directed the labor crews. Before long every breach was sealed.
10
西 使 西使 殿
In the seventh month of Taizong's second Taiping Xingguo year (977), the river broke at Wen County in Mengzhou, Xingze in Zhengzhou, and Dunqiu in Chanzhou. Conscript labor from every riverine prefecture was mobilized to seal the breaches. Left Guard grand general Li Chongju was also sent with relay horses from west of Shan to Cang and Di to survey conditions along the river. Wherever the dikes showed gaps he ordered immediate repairs; and all land tax was remitted for flood victims. In the first month of the third year seventeen envoys were appointed, each responsible for a section of the Yellow River dikes. At Linghe County in Huazhou a previously sealed breach opened again. Western Upper Gate envoy Guo Shouwen was ordered to lead troops to close it. In the seventh year the river swelled enormously, pressing the Qing River and threatening Yunzhou. With the city about to be engulfed, its gates were sealed and urgent dispatches sent to court. An edict sent Palace Front recipient Liu Ji galloping to reinforce the defenses.
11
使 使
In the fifth month of the eighth year the river broke catastrophically at Hancun in Huazhou, flooding farmland across Chan, Pu, Cao, and Ji, destroying homes, and running southeast to the Pengcheng border where it entered the Huai. An edict mobilized conscript labor to seal the breach. The dikes remained unfinished for a long time, so envoys were sent to survey the sites of the old outer embankments. On their return the envoys submitted separate memorials arguing that "repairing outer dikes is less effective than splitting the river's force. From Meng to Yun there are dikes throughout, but the channel is narrowest at Hua and Chan. At these two prefectures a water-diversion system should be built: open one channel on each bank — north into the Wang Mang River to reach the sea, south into the Ling River to reach the Huai — to tame the raging current, just as at the Bian River mouth. Along each diversion channel, sluice gates should be built at measured intervals, opened and closed as conditions require, to keep the flow evenly distributed. Shipping and irrigation would follow — the foundations of prosperity. The court gave no response. Rain fell for weeks on end and the breach would not close. Troubled, the Emperor sent Privy Council academician Zhang Qixian by relay to the White Horse Ford to offer sacrifice with a great victim and jade disc. In the twelfth month Huazhou reported the breach sealed, and the court celebrated.
12
使
In the spring of the ninth year Huazhou reported another breach at Fangcun. The Emperor said: "When the river broke at Hancun we mobilized civilians to repair the dikes and failed. How can we burden the people again? Send the armies instead." Fifty thousand troops were mobilized under Palace Guard infantry commander Tian Zhongjin. Hanlin academician Song Bai was again sent to sacrifice at the White Horse Ford, casting the yi vessel with a great victim and jade disc. Before long the work was done.
13
使 使西
In the third month of Chunhua 2 (991) an edict ordered: "Chief officials and river-patrol commissioners must inspect the dikes regularly and prevent damage or collapse. Violators will be punished by law." In the tenth month of the fourth year the river broke at Chanzhou, the north city was inundated, and more than seven thousand homes were destroyed. An edict sent troops to do the repair work in place of civilians. That year river-patrol tribute official Liang Rui memorialized: "The soil at Huazhou is loose and the banks crumble easily. Every year the river breaks on the south bank and destroys farmland. I propose cutting a diversion channel at Yingyang, forty li long, to join the main river at Liyang and relieve sudden floods." The Emperor approved the plan. In the first month of the fifth year Huazhou reported the new channel complete. The Emperor studied the maps and ordered Zhaoxuan envoy and Luozhou prefect Du Yanjun to lead soldiers and laborers — reckoned at 170,000 work units — to cut a channel from the Hancun bund to the Iron Dog Temple west of the city, more than fifteen li, rejoining the main river to split the current.
14
使 滿 使
In the fifth month of Zhenzong's third Xianping year (1000) the river broke at the Wangling bund in Yunzhou, spread across Juye, and poured into the Huai and Si with such force that it threatened the prefectural city. Envoys led twenty thousand conscript laborers from the affected prefectures to seal the breach. The work took more than a month. Ever since the Red River had broken its banks and pressed upon the Ji and Si, Yunzhou city had lived under constant threat of flood. Now the rains had lasted a full month and the floods worsened. Ministry of Works director Chen Ruozhuo was sent to survey a site and relocate the city. Ruozhuo proposed moving to the high ground at Yangxiang, fifteen li southeast. The edict approved. That year an edict declared: "River officials, even when their terms expire, must remain until the waters subside before being replaced. Prefects and vice-prefects shall inspect the dikes every two months; magistrates and assistants shall patrol in rotation; transport commissioners shall not be given other duties." The prohibition on cutting elm and willow along the river was strictly reinforced.
15
Archives assistant Li Chui submitted three chapters of the "Book on Guiding the River by Terrain" with maps. The summary reads:
16
西西 西
I propose tracing Yu's old course east of Ji commandery, flanking the Imperial Canal and comparing water levels, so the river issues between Dapi, Shangyang, and the Taihang range, restores the Western River's old channel, flows north past west Daming and south Guantao, then northeast joins the Red River to reach the sea. North of Weixian a branch channel would run due north and slightly west through Heng and Zhang, descending to Xing and Ming — as the "Documents of Xia" describes passing the Jing waters — then east to the Yi River, joining the Baiji and Chao rivers to reach the sea. Below Dapi the Yellow and Imperial rivers mingle; hemmed in by mountains and dikes, the current cannot run far. Carried on high ground northward, the people would prosper and the Khitan could not invade from the south. The "Tribute of Yu" speaks of "passing to the right of Jieshi and entering the sea." Kong Anguo explained: "The river runs upstream against the current to this province's border."
17
西西西西 西西西西 西西西 西西西使使西
Work would begin eighty li west of Dapi, five li east of Cao Cao's transport canal: draw the river due north and slightly east for ten li, break through Yu's ancient dike, pass the Horse-Pasturing Marsh along Yu's old course, then thirty li east to west of Dapi and north of Tongli Army, flank the White Ditch, rejoin the western main channel, run north past Qingfeng and west Daming, along the Huan and east Weixian to south Guantao, enter the Tun clan's old channel, join the Red River, and reach the sea. West of Dapi, on the west bank of the newly opened old channel, a five-li branch would run due north and slightly west, matching the Bian in width and depth, join the Imperial Canal route, and north of Dapi — where the soil is firm — a twenty-li east-west channel of equal dimensions would rejoin the eastern main river. With two diversion channels splitting the flow, three or four parts of the water would be drawn off while the old Chanyuan channel still received its share. For the most part the river would follow the western main channel's old course northeast, join the Red River, and reach the sea. Then north of Weixian, from the Imperial Canal's west bank, a sixty-li channel of equal width and depth would run due north and slightly west to join the Heng and Zhang rivers; and at Jizhou's northern border, thirty li southwest of Shenzhou, the Heng-Zhang west bank would be gated: northwest into the Hutuo — closed in flood so water flowed east toward the Bohai, opened in drought to irrigate garrison farms to the west. This would strengthen China's frontier defense.
18
使
Since the Han dynasties, hydraulic experts repeatedly sought to reopen and dredge the Nine Rivers' old channels. Maps and gazetteers show the Nine Rivers all lying north of Pingyuan — yet the river already breaks at Chan and Hua before it even reaches that plain. What good would reopening the Nine Rivers do? When Emperor Wu abandoned Dapi's old channel and unleashed the violent current at Dunqiu, Yan and Qi were flooded and the heartland suffered — while a thousand li of fertile Heshuo farmland lay open for frontier raiders to plunder. Today the great river runs entirely east, leaving all of Yan exposed to the north. No frontier defense matters more than controlling the river. Otherwise the hundred wealthy cities of Zhao and Wei would be — as the saying goes — teaching thieves and inviting raiders. If they wait for famine and strike when we are weak, improvised plans at the last moment will not suffice; better to complete the work now, while manpower and resources are plentiful.
19
An edict commissioned Privy Council academician Ren Zhongzheng, Dragon Diagram Pavilion academician Chen Pengnian, and drafting drafter Wang Zeng to review the proposal. Zhongzheng and his colleagues memorialized: "Li Chui's proposal is thorough and comprehensive. But dividing the river into six channels from Huatai downward would follow the current's downward rush — fierce and uncontrollable. The waters would likely merge into one torrent rather than follow six separate courses. Even if six channels could be achieved, six additional mouths would be nearly impossible to dike over the long term. We also fear silting the Hutuo and Zhang until they become a new scourge. Building seven hundred li of dikes would require 217,000 laborers for forty days, seize farmland, and prove enormously costly. The proposal was shelved.
20
西使使
In the seventh year an edict halted repair of outer dikes to spare the people's strength. In the eighth month the river broke at the Dawu bund in Chanzhou. Several thousand workers built a new dike two hundred forty paces long, and the water returned to its channel. In the eighth year Jingxi transport commissioner Chen Yaozuo proposed opening a small Huazhou channel to split the current. Envoys were sent to survey the pros and cons. On their return they proposed work north of Sanyingyang Village and reopening an upstream branch channel to relieve the backlog. The edict approved.
21
西西 使
On the yiyi night of the sixth month of Tianxi 3 (1019), the river overflowed at Huazhou beside Tiantai Mountain northwest of the city, then breached again southwest of the city. Seven hundred paces of bank collapsed, the prefectural city was inundated, and the flood swept through Chan, Pu, Cao, and Yun into Liangshan Marsh; then joined the Qing River and ancient Bian channel flowing east into the Huai. Thirty-two prefectures and districts were affected. Envoys immediately levied sixteen million units of timber, stone, piles, and reed-bamboo from the prefectures and mobilized ninety thousand soldiers and laborers for repairs. In the second month of the fourth year the breach was sealed. The court celebrated, and the Emperor personally composed an inscription on stone to commemorate the achievement.
22
That year Sacrifices Bureau vice director Li Chui again addressed the pros and cons of dredging the river. He was sent to Daming, Huazhou, Weizhou, Dezhou, Beizhou, and Tongli Army to consult with local officials. Chui memorialized:
23
西 西 使
Everywhere I went officials warned that diverting the Yellow River into the Wang Mang Sha River and the Western River's old channel — and then into the Jin and Red rivers — would unleash such force as to inundate farmland beyond defense. I agree that wherever the river runs, harm follows. The southern breach has already done great harm. East of Yangwu bund and west of Shiyan bund the terrain is low-lying, and draining water eastward is difficult. Some argue: "The breach site has a deep pit and the old channel runs against the current. If we seal it, neighboring dikes will break again." Those who favor blocking the breach have a genuine case. A northern breach would do less immediate harm — yet once the river poured into the Imperial Canal, surged through the Yi, passed Ganning Army and Duliu mouth, it would reach Khitan territory. Others warn: "This would unsettle the frontier." Those who favor dredging face an even harder argument. Between these dilemmas I propose a third course: draw the river from upstream onto high ground northward, east to Dapi, and discharge it back into Chanyuan's old channel — so it neither reaches Huazhou to the south nor crosses Tongli Army's border to the north.
24
西 西
How would this work? From Weizhou's eastern border, five li east of Cao Cao's transport canal, pack earth along a projecting point on the north bank to draw the water due north and slightly east for thirteen li, break Yu's ancient dike, pour into Peijia Pool, pass the Horse-Pasturing Marsh, then forty li east and slightly north, cut through Dapi's western mountain, and divide into two channels: one along Dapi's southern foot, breaching the ancient dike eight li east to restore Chanyuan's old course; one along the curved river mouth north of Tongli Army city to Yu's Western River old channel, five li due north and slightly east, opening great north-south dikes, then seven li east into Chanyuan's old course to join the southern channel. Thus carried on high ground, the river's force would be split between Dapi's two foothills, channeled through two dredged outlets gathering northeast, rejoining Chanyuan's old course within thirty li — and Huazhou would dry up without further intervention.
25
I request twenty thousand soldiers and laborers, starting work in the second month of next year, half effort during midsummer's three fu periods, completion by the tenth month. Leveling high and low ground can wait until the following year.
26
The memorial reached court, but deliberation feared the burden and the plan was abandoned.
27
西 西調 西
Initially Huazhou made only casual repairs at the Tiantai breach, which lay somewhat away from the main current. Once the southwest dike was finished, a crescent-shaped dike was built beside the Tiantai mouth. On the sixth month's full moon the river broke again below Tiantai, running south through Wei and flooding Xu and Ji — worse than three years before. With fresh tax levies just imposed, the Emperor feared exhausting the people and ordered flood-affected prefectures in Jingdong, Jingxi, and Hebei to levy no more conscript labor. Soldiers on dike duty were to receive care and rotating rest from their commanders. In the first month of the fifth year Huazhou prefect Chen Yaozuo, with northwestern floods having destroyed outer defenses, built a great dike and stacked river bundles north of the city to protect residents; he also had cross-timbers carved with hanging wooden strips placed along the bank to break the current — called "wooden dragons" — on which the city then relied. He also opened branch channels from the old river to split the current. An edict commended his work.
28
Commentators note that the Yellow River rises and falls with the seasons and name each stage by natural signs. After the Beginning of Spring, when east winds thaw the ice, watchers record the first rise — one inch foretells a foot by summer and autumn. This sign has proved reliable, hence "trustworthy water." In the second and third months, as peach blossoms open, ice and snowmelt release their waters and streams converge in swelling waves — "peach-blossom water." When turnip flowers bloom in late spring — "vegetable-blossom water." At month's end in the fourth month, as wheat ears form and stalks turn golden — "wheat-yellow water." In the fifth month, as melon vines spread — "melon-vine water." In the northern wilds, ice in deep valleys melts only by midsummer. Waters washing over mineral-rich rocks carry alum's brackish tang into the river — after mid-sixth month, "alum-mountain water." In the seventh month, as beans flower — "bean-blossom water." In the eighth month, as reeds bloom — "reed-sprout water." In the ninth month, around the Double Yang festival — "climbing-high water." In the tenth month the waters subside and return to their channel — "returning-channel water." In the eleventh and twelfth months, as broken ice and mixed currents freeze again in the cold — "compressed-ice water." These seasonal signs follow regular patterns and serve as standards; untimely violent floods are called "guest water."
29
{} 退
Among water conditions: when a channel shifts and pours crosswise, piercing the bank as if with stakes — "piercing the bank." When floodwaters rise over the embankment — "smearing the bank." When an old bundle-bank rots and hidden currents scour beneath — "collapsing bank." When swirling waves undercut the bank from above — "bank-collapse roll." When water pushes up against the bank against the current — "upstream spread." Rising with the current — "downstream spread." Or when water suddenly falls, a straight current abruptly bends and shoots sideways — "direct cross-burst." When violent currents shift suddenly, the approaching clear stretch looks bright from afar — "dragging white," also "bright shoal." When raging rapids briefly pause and swell upward, boats that hit them often sink — "standing-wave water." When the waters recede they leave silt; in summer this becomes rich, glutinous soil. Early autumn deposits yield yellow, somewhat loose soil; late autumn yields white depleted soil — after Frost's Descent it is all sand.
30
調 使
By regulation, officials each mid-autumn pre-levied flood-repair materials — brush, reeds, timber, piles, bamboo, stone, rush rope, and bamboo rope totaling over ten million units — called "spring stock." Edicts went to riverine prefectures' producing regions. Envoys convened river officials and, during agricultural slack seasons, led laborers and water workers to gather and stock materials. Cutting reeds and rushes was called jian; cutting elm and willow branches was called shao; plaiting bamboo and binding jian into rope. Bamboo was fashioned into great ropes ten to one hundred feet long, in several grades. First a broad, level site was chosen as the bund yard. A bund was built by densely layering jian and rope, spreading shao atop, alternating layers, pressing with earth and broken stone, and running a great bamboo rope crosswise through the center — the "heart rope." The mass was rolled and bound, great jian ropes lashed to both ends, bamboo ropes issuing from the sides — several zhang high and twice as long. Hundreds or a thousand laborers hauled in chorus and stacked the bundles at weak points in the bank — "bund bank." Once placed, piles and stakes held them in place and long timbers were driven through. Bamboo ropes were anchored to great timbers buried in the bank. When the river breached, more bundles were added to fill gaps. Without multiple stacked layers a single bund could not check swift currents. Horse-head, saw-tooth, and wooden-bank structures also compressed the current to protect the dikes.
31
西
Along the river: Mengzhou had two bunds north and south of the channel; Kaifeng had Yangwu bund; Huazhou had seven — at Han and Fang villages, Pingguan, Shiyan, west of the city, Yuchi, and Yingyang (the old Qiliqu bund was later abandoned).
32
西
Tongli Army had two bunds (Qijia, Sucun); Chanzhou thirteen (Puyang, Dahan, Dawu, Shanghu, Wangchu, Henglong, Caocun, Yiren, Dabei, Gangsun, Chengu, Minggong, Wangba); Daming two (Sundu, Houcun); Puzhou four (Rencun and east, west, north); Yunzhou six (Boling, Zhangqiu, Guanshan, Zilu, Wangling, Zhukou); Qizhou two (Caijinshan, Shijiawo); Binzhou two (Pinghe, Anding); Dizhou four (Nieji, Suodi, Juya, Yangcheng). Officials budgeted for all annually without shortfall.
33
使
In the eighth month of the sixth year the river broke at Chanzhou's Wangchu bund — thirty paces wide. In the eighth year an edict ordered the Hebei transport commission to plan flood defenses. Liangshan magistrate Chen Yao proposed dredging the Miqiu River on the Yun-Hua border to split the current, and envoys were sent to survey outer dikes. In Mingdao 2 (1033) Daming's Chaocheng County was relocated to Dupocun; Yunzhou's Wangqiao crossing and Zizhou's Linhe town were abandoned to escape the floods.
34
使 使
In the seventh month of Jingyou 1 (1034) the river broke at Chanzhou's Henglong bund. In Qingli 1 (1041) an edict temporarily halted breach repairs. The breach long went unrepaired while debate turned to opening diversion channels to tame the current. Before work could begin the river divided on its own. Officials reported it and envoys were sent to offer special sacrifice. In the third month dikes were ordered built at Chan to protect the city. On the guiyou day of the sixth month of the eighth year the river broke at the Shanghu bund — five hundred fifty-seven paces wide — and envoys were sent to survey the dikes.
35
使
In the third month of Huangyou 1 (1049) the river joined the Yongji Canal and poured into Ganning Army. On the xinyou day of the seventh month of the second year the river broke again at Guogu in Daming's Guantao County. On the yiyou day of the first month of the fourth year Guogu was sealed but the river remained congested. Advisers proposed opening Liuta to relieve the pressure. In Zhihe 1 (1054) envoys were sent to survey the old channel and measure elevations at Tongcheng town's sea mouth against the ancient course. In the second year Hanlin academician Ouyang Xiu memorialized:
36
The court plans to wait until autumn for a major project — seal Shanghu, open Henglong, and return the great river to its old course. Mobilizing the masses requires matching heaven's seasons and measuring human capacity — planning from the start and examining the end. Only then should work proceed, and only where benefits clearly outweigh costs will there be no regret. In recent years projects have taxed the people and wasted treasure because planning at the outset was careless and partial arguments were trusted too easily. Work began in haste; when opinion wavered, projects were abandoned in regret. I need not cite distant examples — consider only the Shanghu breach. The ministers in power, without careful planning, hastily proposed to seal it. Eighteen million units of materials were levied across six circuits and more than a hundred prefectures and armies. Officials drove the work with fire-like urgency, and the people's suffering filled every road. Sometimes materials had already been delivered to the government, sometimes laborers were still on the road — and before work could even begin, the project was called off. Public funds were wasted, popular resentment mounted, and schemes were launched and dropped on a whim. The damage was exactly like this. Now I hear that another river-repair project is planned — three hundred thousand men to open a channel more than a thousand li long, requiring several times the material resources of past years. At a moment of drought and natural calamity, when the people are exhausted and the treasury empty, this project ignores human capacity and flouts the season. I see five compelling reasons why it must not proceed:
37
From last autumn through mid-spring the whole empire has endured drought — Jingdong worst of all, Hebei close behind. The court is already struggling merely to keep the peace and provide relief, and still fears that people will turn to banditry — how much worse if both circuits must mobilize vast numbers for a massive public works project? This is the first reason the project must be rejected.
38
Since the En Prefecture campaign, Hebei has suffered famine after famine; eight or nine households out of every ten have fled. In recent years some people have drifted back, but survivors are few, wounds from the losses remain unhealed, and the region's resources are still depleted. Jingdong has had no rain or snow since last winter. Wheat never sprouted; late spring is almost gone and millet still unplanted. Farmers are desperate and see no hope anywhere. If labor is levied from other circuits, men from distant prefectures will struggle to arrive for duty; And if draftees must come from every circuit, Jingdong and Hebei together cannot bear the burden. This is the second reason the project must be rejected.
39
When blocking the Huazhou breach was discussed in past years, public and private resources were not nearly as depleted as they are today; Even then they had to stockpile materials and squeeze the people's wealth for several years before work could begin. Now the treasury is empty and the people exhausted, yet blocking the massive Shanghu breach is one enormous undertaking. Cutting through Henglong to reopen the long-abandoned old channel is another enormous undertaking. From Henglong to the sea — more than a thousand li — the shao bunds have long been abandoned and would need sudden, full-scale repair; yet another enormous undertaking. In better times, one major project still took years to launch; now they would suddenly undertake three at once amid drought, disaster, and poverty. This is the third reason the project must be rejected.
40
使
Even if Shanghu could be sealed, the old channel might not be openable at all. Gun tried to dam the flood for nine years and failed. Yu obtained the Hongfan treatise on the Five Phases, understood that water naturally seeks lower ground, and by guiding the current downward brought the flooding to an end. Even Yu the Great could not dam and block the river — he could only channel it according to the land's natural contours. Now they propose to defy water's nature — to dam it, seize the Yellow River's main channel, and force it back by human labor. This is what even Yu the Great could not accomplish. This is the fourth reason the project must be rejected.
41
Henglong has been silted shut for twenty years and the Shanghu breach for several more. The old channel has filled in and would be hard to cut open; the current settled course has held for so long that reversing it would be nearly impossible. This is the fifth reason the project must be rejected.
42
I reflect that the court has endured years of calamity and divine reproof, and that the omens in Jingdong have been especially severe. The earth, which ought to lie still, has rumbled; Giant Cliff Mountain collapsed and the sea surged — for nearly ten years such signs have not stopped. Warnings from heaven and earth are surely not sent without reason. The region where these portents have appeared demands the greatest caution — yet now, in a year of disaster, they would gather three hundred thousand men in exactly that region. I fear calamity will erupt from this. Jingdong is a thousand li of scorched earth, and famine-stricken people are already suffering under heaven's wrath. I also hear that as the river project nears, people are cutting down mulberry trees and tearing down their houses, leaving themselves no way to live. The threat of mass flight and banditry cannot be ignored. The project should be halted immediately to reassure the people.
43
使
In the ninth month an edict declared: "Since the Shanghu breach, the Yellow River has poured toward the Jindi embankment and gradually become a scourge upon Hebei. Reopening the old channel was deferred because Hebei and Jingdong were in famine, and the work was never begun. Now Li Zhongchang of the River Works Bureau proposes diverting water into the Liuta River to send it back toward the Henglong old channel and ease the immediate crisis. Let Hanlin academicians from dazhi through daizhi rank, together with censorial officials and the River Works Bureau, conduct a joint review."
44
Ouyang Xiu submitted another memorial, saying:
45
使
I observe that the Hanlin Academy's collective deliberation on river repair has reached no settled conclusion. Perhaps because Jia Changchao wants to restore the old channel while Li Zhongchang urges opening Liuta — each clinging to one plan with no way to judge which is right. In my humble view, both are wrong. Those who advocate restoring the old channel have not grasped the root of the costs and benefits; Those who advocate Liuta come close to outright deception. Those who say the old channel can be restored see Hebei's flooding and want to send the river back to Jingdong. They do not consider why the river has breached repeatedly since the Tianxi era, and so fail to see that the old channel cannot be restored — hence I say they have not grasped the root of the matter. Claims about Liuta's benefits collapse on their own without needing refutation. Liuta is already open — so why do En and Ji prefectures still report urgent flooding? This shows that the touted water reduction has brought no benefit at all. Advocates of Liuta claim it can fully divert the Yellow River back to the Henglong old channel. Liuta is merely a branch of the lower stream and already harms Bin, Di, De, and Bo — what harm would follow if the entire river were diverted there? This is why I call it near-deceitful nonsense.
46
The river is inherently laden with silt and sand — silting is inevitable. Silt accumulates first downstream; as the lower reach rises, flow is gradually choked until the river breaks out at a low point upstream — the usual pattern. Water naturally seeks lower ground, so channels the river has already abandoned have always been hard to restore. I will not expound the river's ultimate source; for the channel they wish to restore, I will explain why it has repeatedly breached since the Tianxi era.
47
In the Tianxi period the river flowed east out of Jingdong along what is now called the old channel. After silting choked the channel, it breached at Tiantai shao; the breach was sealed and flow returned to the old channel; Soon it breached again south of Huazhou at the Iron Dog Temple — today's Longmen shao. A few years later it was blocked again and flow returned to the old channel. Then it breached at Wangchu shao — a smaller break that split flow with the old channel — but the old channel still silted up until a major breach opened at Henglong. Breaches could be forcibly sealed and the old channel forcibly restored — but restorations never lasted, because the old channel silted up and water could not pass. Once Henglong breached, water ran downward — and for more than ten years the river caused no harm. By Qingli years three and four, the Henglong channel silted first from the estuary for more than one hundred forty li; After that the You, Jin, and Chi rivers silted up in succession. With the lower reach blocked, the river breached at Shanghu upstream. Both the Jingdong and Henglong old channels are silt-blocked stretches of high ground the river has long since abandoned. The Jingdong old channel was restored and breached again and again — obviously it cannot be recovered; that needs no argument.
48
Previous planners estimated the Jingdong old channel work and claimed only the stretch above Copper City was especially high; east of Copper City the land is somewhat lower, but still actually higher than the reach above Shanghu. If the land east of Copper City truly slopes steeply down, water should have breached above Copper City — so why did Henglong's mouth suddenly silt up, and why the catastrophic breach? If both old channels are impossible, how can Hebei's flooding be relieved? When certainty is impossible, the wise weigh lesser against greater harm — better than much harm for little gain, and especially when there is harm without gain. Among these three options one can choose.
49
When Shanghu first breached, repair was estimated at eighteen million units of shao and jian, levied across six circuits and more than a hundred prefectures and armies. To seal the same Shanghu breach now would require the same materials as before. Opening the old channel by Zhang Kui's estimate would cost enormously; even Li Can's reduced plan still required three hundred thousand men. Trying to contain the Yellow River in a channel only fifty paces wide is laughable. They also propose doubling each man's excavation from a three-chi square to six chi wide, three thick, and six long — even doubling the labor is already backbreaking. By excavation calculation a six-chi section requires eight times the work — far beyond human capacity. The original plan is too large to launch; the scaled-down version is too small to be workable.
50
使 使
Blocking Shanghu and opening the old channel are two huge undertakings that exhaust the nation and the people. Trying to reopen a channel repeatedly proven unrecoverable wastes everything while neither goal is achievable — pure harm without benefit. Even if temporarily sealed to ease present flooding, upstream breach is inevitable — as at Longmen and Henglong — little benefit for much harm.
51
Liuta has the name of reducing water but not the reality of reducing disaster. Lower branches already cause much harm. Diverting the full river would overwhelm Bin, Di, De, and Bo — prefectures Hebei depends on — while the silted old channel guarantees upstream breach elsewhere. Pure harm, nothing wise men would undertake. Instead, strengthen dikes where the water runs, clear the lower reach, and dredge it to the sea — then there need be no fear of breach and spill.
52
The river's passage through several prefectures is indeed a burden; Annual dike maintenance labor is indeed exhausting. Rather than wasting national wealth and masses on doomed projects that still leave several prefectures suffering, the lesser harm — annual dike labor — is what the wise should choose.
53
使
The river today faces three breach risks: restore the old channel and upstream will breach; open Liuta and upstream will also breach; if the lower reach is not dredged to the sea, upstream will breach as well. I ask that officials skilled in water works be chosen to find and dredge a route to the sea at the lower reach; Otherwise, with the lower reach blocked, upstream breach is inevitable and the harm boundless. I am no hydrologist — I only compare what present evidence shows. I ask Your Majesty to receive my memorial and judge what is fitting.
54
The pre-deliberation officers — chief Hanlin academician Sun Bi and others — said: reopening the old channel would bring lasting benefit, but the work is too great to finish; The Liuta lower reach can be directed eastward to relieve flooding at the En and Ji Jindi embankment.
55
使殿殿
In the twelfth month the Secretariat memorialized: "Since the Shanghu breach, Daming and En-Ji have suffered. Opening the Copper City route and blocking Shanghu was deferred as too difficult to finish quickly, yet we fear the Jindi embankment cannot hold the overflow. We ask to prepare funds to use Liuta's flow into Henglong, and order Hebei and Jingdong to complete dikes and shao bunds in advance and tally farmland above the high-water line. The edict approved the memorial: Li Zhang, prefect of Chanzhou, as overall supervisor; transport commissioner Zhou Hang as acting co-administrator of Tanzhou; inner attendant Deng Baoji as coordinator; Li Zhongchang supervising river works; Zhang Huai'en as chief overseer. But Baoji did not go; inner attendant Wang Congshan replaced him. Dragon Diagram Pavilion academician Shi Changyan was appointed to lead the project; Cai Ting, overseeing Kaifeng border counties and towns, and Yang Wei, handling river works, jointly managed the river breach repair. Ouyang Xiu submitted another memorial asking to halt the Liuta project. Chief Councillor Fu Bi was then the strongest advocate of the plan, and these memorials too went unheeded.
56
使'' 使
In the fifth year the river split at the sixth bund in Wei prefecture, forming what was called the Two-Branch River, two hundred feet across. The Two-Branch River ran one hundred thirty li to where Wei, En, De, and Bo met, a stretch known as the Four Border Head River. In the seventh month Metropolitan Transport Commissioner Han Zan said: "The Four Border Head follows the ancient Great River's course — the route described in the Treatise on Ditches and Canals: 'From Pingyuan and Jindi, opening the Great River into the Duma River, more than five hundred li to the sea. Starting in spring, three thousand laborers could dredge it in a month. Diverting water into the Jin and Chi rivers and deepening them to six feet would surely bring benefit. The Shanghu breach channel runs from Wei through En-Ji and Qianning to the sea; the Two-Branch River runs from Wei and En east to De and Cang to the sea. With the flow divided in two, the upper reach would no longer choke and the risk of breach and overflow would be removed." He then submitted a diagram of the Four Border Head and Two-Branch River. In the seventh year, on the wuchen day of the seventh month, the river broke through at the fifth bund in Daming.
57
使
In the first year of Emperor Yingzong's Zhiping reign, the Directorate of Waterways was ordered to dredge the Two-Branch and Five-Branch rivers to ease flooding in En and Ji. Earlier the Directorate of Waterways had reported: "With Shanghu sealed shut, the river along the Jizhou border is shallow, and the Fangjia and Wuyi bunds failed for that reason. A major breach now could prove worse than the Shanghu disaster." It sent Vice-Director Zhang Gong of the Directorate of Waterways, Revenue Vice Commissioner Zhang Tao, and others to inspect the site, launched the project, and finally sealed the breach.
58
使 西
In the sixth month of Shenzong's first Xining year the river overflowed the Wulan dike in Enzhou and broke the Zaoqiang bund in Jizhou, pouring north into Ying prefecture. In the seventh month it overflowed again at the Leshou bund in Yingzhou. Deeply worried, the emperor consulted his close advisers, including Sima Guang. Directorate Vice-Director Li Lizhi proposed building three hundred sixty-seven li of new dikes in En, Ji, Shen, Ying, and neighboring prefectures to hold the river back. The Hebei transport office replied that this would take more than eighty-three thousand laborers and a month to complete. The region is still recovering from disaster; we ask that the work be deferred." Directorate Vice-Director Song Changyan argued: "The Two-Branch River mouth has shifted. We should meet the river where it runs, advance the upper contract, and pierce the channel to relieve flooding in the four prefectures." He and Agriculture Commissioner Cheng Fang, an inner attendant, then submitted a plan to open the Two-Branch channel and steer the river eastward. The Directorate of Waterways then memorialized: "Since the Shanghu breach turned north in Qingli 8, more than twenty years ago, over a thousand li of dikes have been built from Chanzhou to Qianning Army, exhausting both the state and the people. In recent years the channel below Jizhou has silted up, repeatedly threatening the upper and lower bunds. Zaoqiang is now eating away the bank and cutting into the old channel; new dikes may help, but they are no lasting solution. We propose surveying the old Liuta mouth and using the Two-Branch River to steer the flow east while gradually shutting off the northern channel." But River Works Supervisor Wang Ya and others objected: "The Yellow and Imperial rivers run north into Duliu East Fortress, cross the borders of Qianning Army, Cangzhou, and seven other fortresses, and pour straight into the sea. Near the estuary the channel is six or seven hundred paces wide and eight or nine zhang deep; west of Sannü Fortress it is three or four hundred paces wide and five or six zhang deep. The deeper the channel, the swifter the current — heaven's own barrier against the Khitan. Advocates of reopening the Two-Branch channel and gradually shutting the northern flow have never grasped the advantage of the Yellow River running east inside the frontier channel."
59
西 西
In the eleventh month the court ordered Hanlin Academician Sima Guang and Inner Attendant Vice Director Zhang Maozhe to ride post horses and survey the new dikes in the four prefectures, and on their return to assess the Liuta and Two-Branch River projects as well. In the first month of the second year Sima Guang addressed the throne: "I urge adopting Song Changyan's plan: build an upper contract west of the Two-Branch channel and divert the water east. Once the eastern channel deepens and the northern one silts up, block the northern flow, restore the Imperial River and Hulu River, and relieve flooding west of En, Ji, Shen, and Ying."
60
After the Shanghu breach the river ran north of Wei through En, Ji, and Qianning to the sea — the northern flow. In Jiayou 5 the river split at the sixth bund in Wei prefecture into two channels running east from Wei and En through De and Cang to the sea — the eastern flow. Opinion was sharply divided. Li Lizhi pressed hard for the new dikes, but the emperor rejected that course and finally adopted Song Changyan's plan, building the upper contract.
61
使 西 西 西
In the third month Sima Guang memorialized: "River control must follow the land and the water's own force. Forcing the river uphill and building dikes across its path will only drive the current sideways and burst the banks — ruining past work and achieving nothing. I fear that officials, seeing the eastern channel already carrying four-tenths of the flow, will rush to claim credit and seal off the northern channel too soon. They do not see that the two branches, though split, lie within ten li of each other on ground that slopes down from east to west. If all the water is forced east, a major flood will drive the current back west into the northern channel and the eastern flow will die; or it will burst where the Cang and De dikes and bunds are still unfinished and spill across the land. That would relieve the western route only to wreck the eastern one — a poor strategy. We should concentrate on protecting the upper contract and the Two-Branch dikes. If the eastern channel gains only two-tenths more this year, the river will gradually turn east on its own — in two or three years, perhaps four or five. Once it carries eight-tenths or more, the scoured channel will be wide, the Cang and De defenses solid, and the northern flow will shrink daily until it can safely be shut off, leaving both routes secure."
62
西西西
Meanwhile Beijing Commandant Han Qi warned: "Labor is scarce this year, yet at the two Jin di bunds work on the upper and lower contracts is being rushed forward, with horse-head structures pushed deep into the channel to wrest control of the Great River. The Two-Branch channel and the tender shoal were once eleven hundred paces wide — wide enough to absorb flood swell. More than eight hundred paces have now been cut away, squeezing the Great River into little more than two hundred. The lower reach will choke, the upper reach will roar under the pressure, and with no labor to maintain the banks, a breach is certain. From De to Cang the entire lower Two-Branch reach lacks dikes and will inevitably flood farmland. If the river mouth is narrowed so it cannot hold flood swell and the upper and lower contracts are torn away, the Two-Branch channel and the northern flow will merge — and the disaster will be worse still. The new dikes in En and Shen prefectures face the Great River from the west on one side and mountain streams from the western hills on the other — caught between two floods, neither front can be held. I ask that a senior court official be sent quickly to the river to confer with the local officers on the ground." At the classics lecture the emperor shared Han Qi's memorial with Sima Guang and ordered him to return to the river with Zhang Maozhe.
63
西 使
In the fourth month Sima Guang joined Zhang Gong, Li Lizhi, Song Changyan, Zhang Wen, Lü Dafang, and Cheng Fang to inspect the upper contract and the square saw-teeth structures, crossed the river, and met for deliberation at the lower contract. Sima Guang and his colleagues reported: "The upper contracts on the Two-Branch channel sit on the shoal and do not obstruct the river's flow. But the square saw-teeth structures have been pushed too far forward, narrowing the northern channel's mouth. We ask that they be pulled back twenty paces and that crescent bunds be built for protection. An ancient distant dike on the Cang-De border should also be repaired. The Two-Branch works were meant to steer the river east; the new dikes were meant to hold back floods from the west. They work as inner and outer defenses together, and neither should be dropped." The emperor then told the two councils: "Han Qi has serious doubts about the Two-Branch repairs." Zhao Bian replied: "Many take Liuta as a cautionary tale." Wang Anshi said: "The dissenters simply have not looked at the facts." The emperor asked: "What if Cheng Fang and Song Changyan jointly oversee the Two-Branch repairs?" Anshi said it could be done. The emperor said: "Channel-piercing is an excellent idea." Anshi agreed: "Exactly. Done promptly, the breach channel can be turned east and the northern flow shut off." He added: "Li Lizhi's new dikes stand as far as eighty or ninety li from the river. They were meant to block spreading floodwater, but they cannot stop the river itself advancing from the south — and I doubt they can even stop the spreading water." The emperor agreed. On the bingyin day of the fifth month the court ordered Li Lizhi to ride post to the capital for consultation.
64
On the wushen day of the sixth month Sima Guang was appointed chief supervisor of the Two-Branch repair project. Lü Gongzhu objected: "Sending Sima Guang to inspect and supervise river works is no way to honor a senior court officer or treat a Confucian minister." Sima Guang's assignment was cancelled.
65
使 使 使
In the seventh month the Two-Branch River ran clear and fast, and the northern channel began to close on its own. On the wuzi day Zhang Gong memorialized: "The upper contract has weathered repeated floods, and the lower contract is secure. The eastern channel is running smoothly. We should block the northern flow and end flooding in En, Ji, Shen, Ying, Yongjing, Qianning, and neighboring jurisdictions. Restoring the Imperial River and Hulu River to their old courses would unblock grain transport, keep the courier network moving, and prevent the pond-barriers from silting up. It would serve frontier strategy by preserving the north-south boundary, save untold annual expense, and let displaced people return home — benefits without end. The Yellow River has brought trouble wherever it runs, in every age. We need only weigh the costs and benefits and choose accordingly. But the north-south dikes for the eastern channel are not yet in place, and sealing the mouth and building dikes will be enormously costly — preparations must be made now. We ask that experts in river works be chosen to study the plan with us and submit drawings for the court's review." The court again ordered Sima Guang, Zhang Maozhe, Directorate officials, and the Hebei transport commissioner to assess the pros and cons of blocking the northern flow; where they disagreed, each was to submit his own view.
66
便 使 使 西
On the jihai day of the eighth month Sima Guang took leave of the throne and said: "Zhang Gong and his allies want to shut the northern channel of the Two-Branch River. I fear the labor and expense will be formidable. Even if sealing it succeeds, the eastern channel is still shallow and narrow and the dikes incomplete — a breach is inevitable. We would simply move the disaster from En, Ji, Shen, and Ying to Cang, De, and beyond. Better to wait two or three years until the eastern channel deepens and widens, the dikes are stronger, the northern flow silts up, and supplies are ready — then sealing it will be straightforward." The emperor asked: "Which is the greater disaster — the eastern flow or the northern?" Sima Guang replied: "Both regions hold the emperor's people — neither can be ranked above the other; but the northern channel is already devastated while the eastern one remains intact." The emperor said: "If we block the northern flow before the eastern channel runs clear, what happens when the river shifts course someday?" Sima Guang replied: "If the upper contract holds, the eastern flow will grow daily and the northern shrink — why fear a shift? If the upper contract fails, anything could happen — our only course is to defend it with all our strength." The emperor asked: "How can the upper contract be kept secure?" Sima Guang said: "Freshly built this year, it is hard to guarantee — yet it just survived a major flood unscathed. Next year its foundations will be set; what is there to fear? The upper contract sits beside the river and still lets the northern flow pass — and even that we can barely hold; and now you want to block the river entirely — how can that be secure?" The emperor asked: "If the river stays divided in two, when will the project ever succeed?" Sima Guang replied: "As long as the upper contract holds, the eastern flow will grow and the northern shrink; Even if the river stays divided, Zhang Gong and his allies may see no victory — but the state would come to no harm. Why? All the waters of the northwest converge on Shandong, so the damage is greatest when they run together — divided, the harm is far less. Zhang Gong and his allies are rushing to seal the northern flow for their own credit, without regard for the state's resources or the people's suffering." The emperor asked: "If we must defend both channels, how can we afford it?" Sima Guang replied: "Merging them into one channel doubles the cost; keeping two channels cuts it in half. Shift half the resources now spent on the northern channel to the eastern one — would that not suffice?" The emperor said: "Go there and see for yourselves."
67
使
By then the eastern branch of the Two-Branch River carried six-tenths of the current. Zhang Gong and his allies pressed to seal the northern flow, and the emperor was inclined to agree. Sima Guang argued that eight-tenths was needed before sealing would work, and that nature must take its course — no forced engineering yet. Wang Anshi said: "Sima Guang's advice repeatedly clashes with policy. Sending him to survey the river when his recommendations will surely be ignored only sets him up to fail in a weighty post." On the gengzi day only Maozhe was sent. Maozhe reported: "The eastern branch now carries eight-tenths of the current; the northern flow only two-tenths." Zhang Gong and others also reported: "On the bingwu day the main river shifted eastward; the northern channel is shallow and weak. On the wushen day the northern channel was sealed." An edict commended Sima Guang and his colleagues and bestowed robes, belts, and horses.
68
Though the northern channel was sealed, the river broke east at Xujia Harbor forty li to the south, flooding Daming, En, De, Cang, and Yongjing. In the second month of the third year Maozhe and Zhang Gong were ordered to survey from Chan and Hua downstream along the eastern channel, assessing water conditions and dike defenses. The Imperial Canal was being dredged at the time. Han Qi said: "Tasks have priorities. The canal transport is running smoothly and poses no threat yet — we should not cut back work on the Yellow River." An edict redirected thirty-three thousand river workers to focus exclusively on the eastern channel.
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