Shen Yan, a modern water conservancy engineer, became the "warehouse official" Yan Ge in Puyang County. As soon as he took office, he encountered an old official falsely reporting famines and embezzling grain money. He also discovered that the Mulan River water control drawings contained fatal flaws. He took advantage of the opportunity of organizing warehouses to use the "continuous water supply method" to solve the county's drinking water problem, and unexpectedly gained the support of craftsmen and the trust of the county magistrate. In order to continue the construction of Mulanpi, he dismantled evidence of corruption among old officials and relied on the New Law School to suppress local forces; while improving the "raft foundation" technology, he persuaded 14 major households to donate funds. From building canals to divert water to building barriers to block tides, Brother Yan repeatedly overcame crises in flood rescue and salt field renovation, and finally completed a thousand-year water conservancy project, turning the salt-alkali land into a land of fish and rice, and grew from a humble official to a pillar of people's livelihood.
