Huinan county belongs to Tonghua City, Jilin Province, located in the southeast of Jilin Province, at the intersection of Changbai Mountain Range and Songliao Plain. It covers an area of 2278.7 square kilometers, and the cultivated land area is 1, 2 1, 000 mu. It has jurisdiction over 10 town, 1 township, 1 provincial development zone, and has * * * 143 administrative villages with a population of 370,000 (in 2002). The main ethnic groups in huinan county are Han and Korean. Longwan National Nature Reserve is located in huinan county.