Dayi County belongs to Chengdu, Sichuan Province, located in the west of Chengdu Plain, bordering Qionglai Mountains. Chongzhou city in the east, Xinjin County in the southeast, Qionglai City in the southwest, Lushan County and Baoxing County in Ya 'an City in the west and Wenchuan County in Aba Prefecture in the north.

Dayi county is known as "the hometown of beautiful mountains and rivers" and "the same origin of immortals and buddhas". As early as the Neolithic Age, people cultivated and established the county system in the Tang Dynasty in 67 1 year, with a history of more than 300 years, and was praised as "the county of Shu" by Yang Shengan, the top scholar of the Ming Dynasty.

Geographical environment:

Dayi County is located at the front of the transition from Chengdu Plain to Northwest Sichuan Plateau. Dayi County is located in the west of Chengdu Plain, 48km away from Chengdu downtown, with the ground span of10259 ′ to10345 ′ and the north latitude of 30 25 ′ to 30 49 ′. It is bounded by chongzhou city in the northeast, Qionglai City in the south, Xinjin District in the southeast and Lushan County, Baoxing County and Wenchuan County in the northwest. The total area of the county 1327 square kilometers.