Most of them are. According to the registered population information network, Dacaigou of Tiejinlong is located 20 kilometers south of Huidong County, Liangshan Prefecture, Sichuan Province. Lisu people account for 76% of the total population in Dacaigou village, and most of Dacaigou village is Lisu people. Lisu people belong to the South Asian type of Mongolian race, and their national language belongs to the Yi branch of Tibeto-Burman language family of Sino-Tibetan language family. Their writing is divided into old and new Lisu languages, and they generally believe in primitive religions.