General Chengdu, whose full name is "local general guarding Chengdu and other places", was specially appointed after the war of pacifying Jinchuan in 41 years of Qianlong. He was the last general stationed in the Qing Dynasty. At first, he proposed to be stationed in Arrow Furnace, and later he proposed to be stationed in Yazhou. Because Chengdu and Yazhou (now Ya 'an, Sichuan) are far apart, generals and princes are far apart. The situation is urgent and we can't discuss it right away. At the same time, the local terrain in Yazhou is narrow and tortuous, so it is difficult for full soldiers to take care of it as soon as possible. So the general moved to Chengdu, and the prefect was ordered to move to Yazhou.