Wen 'an County belongs to Langfang City, Hebei Province, with an area of 1037 square kilometers. As of 202 1, 10, Wen 'an County has jurisdiction over 12 towns and 1 township. The annual average temperature is 1 1.8℃, and the annual average precipitation is 594 mm, which belongs to the semi-humid continental monsoon climate. Located in the middle of North China Plain, it is rich in land resources, and it is the area with the largest per capita land resources in North China. According to the data of the seventh census, as of 0: 00 1 1 in June 2020, the permanent population of Wen 'an County was 544,778.