Chengdu Xinjin Airport is a military airport located in Xinjin District, Chengdu, Sichuan Province. Formerly known as Xinjin Airport, it was built in 1928, and was designated as an air base after the beginning of the Anti-Japanese War. The first expansion was completed from 1939 to 1940, and the second expansion was completed from 1943-1944, becoming the largest bomber airport in Asia at that time.