Ping'an, Haidong

Ping'an District formerly known as Ping'anyi, is an administrative district and the seat of the city of Haidong, in the east of Qinghai Province, China, located about 35 km east from Xining. Its postal code is 810600, and its population is 127,480, 29.4% of whom belong to ethnic minorities. The area is known for its Selenium resources.

During the Han dynasty it was known as Anyi County, and as Zhongge during the Tang dynasty, then as Pingrong and Ping'an during the Ming and Qing dynasty respectively. In 2015, Ping'an County became Ping'an District.

Administrative divisions
Ping'an District is divided into two subdistricts, one town, five townships, and one other township-level division.

The district's two subdistricts are  and Xiaoxia Subdistrict.

The district's sole town is Sanhe.

The district's five township-level divisions are, Shihuiyao Township , Gucheng Township , Shagou Township , and.

Transportation
The district is served by two train stations: the Ping'anyi railway station, and the Haidong West railway station. The Ping'anyi railway station was first built in 1959 and is operated by the China Railway Qingzang Group. The station is situated on the Lanzhou–Qinghai railway. The Haidong West railway station is situated on the Lanzhou–Xinjiang high-speed railway.

National Highway 109 also runs through the district.