When the rain stopped and the floodwater got drained away, Sima Yi hastened to complete the encirclement of Xiangping. The siege carried on day and night, which utilised mining, hooked ladders, battering rams, and artificial mounds for siege towers and catapults to get higher vantage points. The speed at which the siege was tightened caught the defenders off guard: since they had been obtaining supplies with such ease during the flood, there apparently was not any real attempt made to stockpile the goods inside Xiangping, and as a result, famine and cannibalism broke out in the city. Many Liaodong generals, such as Yang Zuo, surrendered to Sima Yi during the siege.