Hunchun is a county-level city in the Yanbian Korean Autonomous Prefecture within Jilin province to the far east. It borders North Hamgyong Province in North Korea and Primorsky Krai in 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.