In ancient China, bureaucrats were the carrier of political system of loving people and governing country. Whether these officials can effectively govern the country is closely related to their experience. Reasonable ways of promotion for officials help them accumulate governing experience. In Ming Dynasty, officials moved up regularly, which had two characteristics. Firstly, flow occurs both bottom-up and top-down. That is to say, local officials have opportunity to be promoted to central government, while low officials in central government flow to local government and high local officials i...