Hunchun is a county-level city in the Yanbian Korean Autonomous Prefecture, far eastern Jilin province. It borders North Korea and Rus…Hunchun is a county-level city in the Yanbian Korean Autonomous Prefecture, far eastern Jilin province. It borders North Korea and Russia, has over 250,000 inhabitants, and covers 5,145 square kilometers. The site of the eastern capital of the Balhae Kingdom between 785 and 793, Donggyeong, was located here.