In the second year of Chenghua of the Ming Dynasty, there was a person named Li Sheng in the Censorate who submitted a memorial talking about border affairs and military affairs. It must be known that the Ming Dynasty was the darkest dynasty in Chinese history, and the emperor was very suspicious. Besides, in his memorial, he recommended some people who had been dismissed from their posts, which violated the taboos of the court, so he was demoted to be a Tongpan.