Hunjiang, city in northeastern China, in southern Jilin Province. Hunjiang (Chinese for “muddy river”) is located on the Hun River southeast of the Longgang Mountains. It borders on China's Changbai Korean Autonomous County, which has the highest concentration of ethnic Koreans in China, and lies less than 30 km (20 mi) northwest of the North Korean border. Hunjiang's economy is based on forestry, and iron and copper mining. Tourism is also important. Both the culture of the area's Korean population and the Changbai Nature Reserve attract tourists to Hunjiang. The city was first established as a meeting point for Han Chinese and the peoples of the north during the Han dynasty (206 BC-AD 220). Population (1991) 470,586.