As I pointed our in a reply to another post, there is one tri-point border connecting CHINA, NORTH KOREA and RUSSIA. Here are the coordinates: 42.41652712,130.63920061,Jieyang Map / English – Chinese Bilingual Edition / An Ancient City in East Guangdong - Jieyang / Street Map / Traffic Information / Shopping Guide / Tourism Information: Guangdong Geographical Bureau: Amazon.com: Books,Jieyang Map / English – Chinese Bilingual Edition / An Ancient City in East Guangdong - Jieyang / Street Map / Traffic Information / Shopping Guide / Tourism Information: Guangdong Geographical Bureau: Amazon.com: Books,かって日軍が陥落させた娘子関を訪ねる』山西省(中国)の旅行記・ブログ by hidamari09さん【フォートラベル】,BTG『大陸西遊記』~山西省 陽泉市~