Because Yu Deshui, an uncle who has repeatedly made meritorious military service, has no children, his biological father, Yu Guoan, decided to adopt Yu Chenglong to Yu Deshui. In the seventh year of Kangxi, Yu Chenglong Yinsheng was awarded the magistrate of Laoting County, and in the eighth year of Kangxi, he served as the magistrate of Luanzhou. Repairing the Luanhe River and treating bandits, because of his outstanding achievements, outstanding talents and integrity, he moved to Tongzhou Zhizhou in eighteen years. Yu Chenglong has been an official in Tongzhou for three years. He established and developed Yixue, and selected good teachers for the poor children in urban and rural areas, so that they can enter school for free and receive due education. He is also good at rectifying criminal cases, strictly abiding by the laws and regulations of the court, and judging public trials fairly, so that thieves from other counties dare not steal in Tongzhou. In twenty years, Yu Chenglong (Bei Ying), then governor of Zhili, appreciated this subordinate with the same name and surname, and recommended him. Yu Chenglong lived up to expectations, and was promoted to Jiangning (now Nanjing) magistrate because of his outstanding achievements. In Jiangning, Yu Chenglong is dedicated to the people, honest and upright, and quite has the style of Yu Chenglong (North China). Emperor Kangxi made a southern tour to Jiangning, and promoted Yu Chenglong to be the provincial judge of Anhui. In view of the common phenomenon that officials of the Eight Banners Han army "squandered extravagant expenses and let loose freely" at that time, Emperor Kangxi made everyone follow Yu Chenglong's example. He said, "We toured Jiangnan, met civil and military officials, soldiers and civilians, etc., and all of them said that Yu Chenglong, the magistrate of Jiangning, was clean and loved the people, and I was delighted. I have been rewarded and advised. Han soldiers of the Eight Banners of Val, etc., from now on, should learn to wash their minds and get rid of old habits. If there are people who love themselves and love their people like Yu Chenglong, I will use them immediately. "
in the 23rd year of Kangxi (1684), Yu Chenglong was appointed to administer the river for the first time, and put forward the idea of "dredging the estuary and draining the river waterway" with the title of Anhui provincial judge, which conflicted with the idea of Jin Fu, the river governor, "building long dikes in the lower river and injecting water into the sea". At that time, Jin Fu thought that the Huaihe River dam should be treated with the method of "bundling water to attack sand" to make the river return to its original course. Facts have proved that Jin Fu's general plan of river management is indeed fruitful, but Yu Chenglong's idea of river management is also scientific. After Jin Fu's death, Yu Chenglong was appointed as the river governor. He fully absorbed Jin Fu's general plan of river management, and formed a new concept of river management with both "dike building" and "dredging", which embodied his spirit of seeking truth from facts and laid a theoretical foundation for his later management of Yongding River.
in the 25th year of Kangxi (1686), he was specially awarded the governor of Zhili. Zhili is located in the capital city area, and the royalty and the landlord are rampant in the village. Yu Chenglong, upright and fearless of power, severely punished the outlaws who bullied others, which dealt a blow to the arrogance of the local powerful forces in the area of Gyeonggi. Emperor Kangxi greatly appreciated this, and told the university students and others: "Although there are clean officials today, they are afraid of the national law. Such as Yu Chenglong, the governor of Zhili, there are very few honest people.
in twenty-six years, I won the prize of Jackie Chan's honesty and ability, and added the prince to protect me less. Fortunately, in Bazhou, Jackie Chan was present at the court, giving him a thousand platinum and a harness with a yellow saddle bridle. In winter, Yu Chenglong whispered to Emperor Kangxi: "The official has been sold out by Pearl and Yu Guozhu." Emperor Kangxi asked Gao Shiqi, "Why didn't ginseng disintegrate?" Gao Shiqi replied: "Who is not afraid of death?" In the twenty-seventh year of Kangxi (1688), Guo Xiu, the imperial adviser, impeached Na Lanmingzhu to form a clique for selfish ends and exclude dissidents. Emperor Kangxi immediately deposed the University of Na Lanmingzhu and handed it over to the guards for retention as appropriate.
in the twenty-ninth year, he moved to Zuodu, where he was appointed as the imperial adviser, and was also appointed as the commander of the Han army with a red flag.
in the thirty-first year, Wang Xin ordered it to stop, and he was reinstated as the river governor, and he was appointed as a dragon. The auxiliary money is used to buy willow bundles, and the Ministry of Industry refutes and reduces them, and Jackie Chan's core is not empty. Auxiliary construction of Gaojiayan heavy dike, raising husband from afar, giving silver a home in advance, the work was suspended and not deducted. New proposition: cancellation, discussion, Jackie Chan's reply, merger and exemption.
in the thirty-third year, the capital was called, and it was said that the canal was from Tongzhou to Yixian, and the Yellow River was from Yingze to Dangshan. Those with low and thin dikes should be increased in height, and the masonry in Gaojiayan was changed, and the river was dredged in Maocheng, and the dykes in Jiangdu and Gaoyou were merged under Qingjiang, so it was planned to be repaired on a large scale.
in the thirty-fourth year of Kangxi (1695), the Qing army used troops in the northwest, and Emperor Kangxi personally levied on galdan, and ordered Yu Chenglong to take Zuodu as the imperial title to co-ordinate and supervise the transportation of food expenses. Yu Chenglong overcame difficulties and obstacles to ensure the supply of food for the conquering army. After the destruction of galdan, he was granted to worship him, and he was hereditary.
in the thirty-seventh year of Kangxi (1698), on February 27th, Emperor Kangxi ordered Yu Chenglong to take the title of Governor of Zhili, Minister of War, and Imperial History of Youdu. At this time, the Hunhe River and the south Yongding River converge in one place, which is unbearable and often floods. Its subsidiaries and people's farmlands are flooded, and the people are miserable. Yu Chenglong was ordered to manage Hunhe River in a crisis. He was ordered to go with Amdo (Portuguese, missionary), a westerner, to investigate and make a feasible scheme for river regulation. After six months of river regulation, Yu Chenglong suggested changing the Hunhe River to Yongding River, which was approved by Kangxi and named Yongding River.
On November 27th, 28, Yu Chenglong was re-appointed as the Minister of War and Governor of the River, governing Huanghuai. At that time, in Huaiyang area, the rivers of Huanghuai and Huaihe River flooded, and many places were flooded. Yu Chenglong traveled to two rivers, surveyed the disaster situation, and applied the effective methods and experience of harnessing Yongding River to harness Huanghuai River. Eventually, due to the numerous river affairs, he became ill from overwork. In the thirty-eighth year of Kangxi, Emperor Kangxi visited the river south again, and saw that Yu Chenglong was weak, giving medicine and imperial poems. He did his duty conscientiously, and his illness increased dramatically, and he still treated the river with illness. In October, he asked for a two-month leave, and Emperor Kangxi ordered the physician to adjust. In February of the following year, Yu Chenglong went to the Huaihe River for inspection in spite of illness, and his condition became worse. On the 23rd, I called my son Yongyu to his sickbed and asked him: I am terminally ill, and I can't be cured without drug bait. The two rivers are important, and it is difficult to treat them. It is urgent to send another talented minister, so as not to miss the state affairs and aggravate my sin. Until the end, I never forget to manage Huanghuai. Four days later, Yu Chenglong died in Huai Department. Kangxi was deeply saddened by the news, and sent an Oracle offering to posthumous title to help him.