6个数三中三怎么算组公式

简介：In the Ming Dynasty, the governor-general of water transportation was not subject to the control of the ministry and was directly responsible to the emperor. However, there was a department in the Ministry of Household Affairs and the Ministry of Works, each responsible for water transportation. The Ministry of Households was in charge of money and grain, and the Ministry of Works was in charge of dredging. , so Song Mei has a considerable understanding of water transportation.