Chengcheng County, subordinate to Weinan City of Shanxi Province, is located in the east of Guanzhong Basin. Between east longitude 109°46 '30 "-- 110°05' 50", north latitude 34°55 '45 "-- 35°27' 05", the total area of 1121 square kilometers. Under the jurisdiction of 1 street, 9 towns.

Chengcheng County has a long history, from the Northern Wei Dynasty was founded, the county has been in use for 1540 years. North high south low terrain, four rivers will be divided into the county "three Liang one Yuan". It is a semi-humid monsoon area in the warm temperate zone, with an average annual temperature of 12℃, precipitation of 680 mm, and a frost-free period of 204 days, with large temperature difference between day and night.

By the end of 2021, Chengcheng County has a permanent population of 303,000. In 2021, the gross regional product of Chengcheng County reached 11.372 billion yuan, of which the added value of the primary industry was 3.868 billion yuan, the added value of the secondary industry was 2.442 billion yuan, and the added value of the tertiary industry was 5.062 billion yuan. The ratio of the tertiary industry was 34:21.5:44.5. The per capita GDP was 37,633 yuan.