Qingjin

Qingjin harbor is located in the city of Qingjin in Xianjin Beidao^([sic – meaning Xianjing Beidao]), Korea. It is divided into east and west ports. In order to let China transfer commodities, Korea completely vacated this port for Jilin and Heilongjian^([sic – meaning Heilongjiang]). In the east port of Qingjin there are four berths so 5,000 to 10,000-ton freighters can berth there at the same time.

In northern China, it links Hohhot-Dongsheng-Yulin-Yanan-Tongchuan-Xi'an, but this line is not yet connected from within the boundaries of Inner Mongolia to Dongsheng and Yuan in Shanxi Province. Its eastern end is linked to Qingjin Harbour in Korea.

The Tu Men River region is defined as the triangle area including North Korea's Qingjin, China's Yanji, and Russia's Nakhotka.