题记这篇将要陆续与读者见面的文章是写于50年前的一篇未曾发表的学位论文。根据1959年2月我国与朝鲜签订的文化协定的有关计划,1962年10月初,我与两名北京大学历史系的应届毕业生谢宝森、王玉林同志一起被派往朝鲜金日成大学攻读朝鲜史的研究生,即朝鲜的所谓副博士研究生。当时我是南开大学历史系世界史教研室研究世界古代史的一名助教,正作为我国著名史 Inscribed this article will continue to meet with readers of the article is written 50 years ago, an unpublished dissertation. According to the relevant plan for the cultural agreement signed between China and North Korea in February 1959, in early October 1962, I was sent to North Korea’s Kim Il Sung University to study North Korea’s history with two recent graduates of Peking University, Xie Baosen and Wang Yulin Graduate student, the so-called associate doctoral student in North Korea. At that time, I was a teaching assistant who studied the ancient history of the world at the Department of World History, Department of History, Nankai University. As a famous Chinese history