本刊封面是俄罗斯、日本、朝鲜与我国领土交界地域的一角，其中明显可见在绿树丛中有一花岗岩质界牌，这就是吉林省东疆“土字牌”。 “土字牌”立在中国东部边疆重镇──—吉林省珲春市敬信乡防川村沙草峰南麓尽处，图们江下游左岸防护堤上。西北距珲春市城１５２华里，南临图 The cover of this magazine is the corner of the geographical boundary between Russia, Japan, North Korea and our own territories. It is obvious that there is a granite boundary card in the green trees, which is the “Tupi plate” of Dongjiang in Jilin Province. “Tubia plate” stand in the eastern border town of China ─ ─ ─ Hunchun City, Jilin Province, Kim Shin-Chuan Kawamura Chuanshan south foothills everywhere, on the left bank of the Tumen River downstream embankment. 152 kilometers northwest from Hunchun City, south of the map