Cheng County or Chengxian () is a county under the administration of Longnan City, in southeastern

Gansu Province Gansu (, ; alternately romanized as Kansu) is a province in Northwest China. Its capital and largest city is Lanzhou, in the southeast part of the province. The seventh-largest administrative district by area at , Gansu lies between the Tibet ...

of China. It has a land area of 1,780 square kilometers and a population of 250,000 in 2004. The postal code is 742500, and the county seat is located in Chengguan Town. Located between mountains, it has a temperate climate, favourable for agriculture. The mountains have lead and zinc ore deposits. Chengxian is noted for its walnut production. Chengxian walnuts were designated a protected origin product in China in 2014. In January 2021, the Qingni River in Chengxian was found to be polluted with

thallium Thallium is a chemical element with the symbol Tl and atomic number 81. It is a gray post-transition metal that is not found free in nature. When isolated, thallium resembles tin, but discolors when exposed to air. Chemists William Crookes an ...

from

zinc Zinc is a chemical element with the symbol Zn and atomic number 30. Zinc is a slightly brittle metal at room temperature and has a shiny-greyish appearance when oxidation is removed. It is the first element in group 12 (IIB) of the periodi ...

production wastewater.

Administrative divisions

Cheng County is divided to 14 towns and 3 townships. ;Towns - Towns are upgraded from Township. ;Townships -Former Townships are merged to other.

Climate

Transportation

Longnan Chengzhou Airport Longnan Chengxian Airport also known as Longnan Chengzhou Airport is an airport serving the city of Longnan in southern Gansu Province, China. It is located from the seat of Cheng County, which is under the administration of Longnan city. Th ...

opened in 2018 and offers domestic flights. The Tianshui–Longnan railway started construction in 2020 and will be the first railway to serve the county. China National Highway 567 and

G7011 Shiyan–Tianshui Expressway The Shiyan–Tianshui Expressway (), designated as G7011 and commonly referred to as the Shitian Expressway () is an expressway that connects Shiyan, Hubei, China and Tianshui, Gansu. It is a spur of G70 Fuzhou–Yinchuan Expressway. Overview Hu ...

are the main roads connecting the county.

References

{{authority control County-level divisions of Gansu Longnan