Ziyang City Inspection Institute is located at No.371, Section 3, Checheng Avenue, Yanjiang District, Huanglong. Ziyang, a prefecture-level city under the jurisdiction of Sichuan Province, is Ziyang County under the jurisdiction of ancient Zizhou. The ancient writers Changhong, Dong Jun and Wang Bao are also called the three sages of Ziyang, and Lezhi is the hometown of Marshal Chen Yi, the founding father. Located in the middle of Sichuan Basin, it is adjacent to Neijiang in the south, Chengdu and Deyang in the north, Chongqing and Suining in the east and Meishan in the west. It is the only regional central city in Sichuan Province that connects Chengdu and Chongqing at the same time. Ziyang was established as a county in the Western Han Dynasty in 135 BC, and then as a state and county, with a history of more than 2,111 years.