Tumen is a county-level city in Yanbian Korean Autonomous Prefecture, eastern Jilin province, Northeast China. Of its 136,000 inhabitants, approximately 78,000 are of Korean descent. The two official languages are Chinese and Korean. Tumen is separated from Namyang of North Hamgyong province of North Korea by the Tumen River. Due to this proximity, many North Koreans escaping North Korea pass through Tumen.