由于战争环境和时代思潮的动荡 ,我的学生生活非常曲折。我曾经历北洋工学院、清华大学、北京大学 ,学过工科、理科、经济和历史 ,非常杂 ,都没学好。但是 ,后来我在专业经济史研究中 ,却发现过去学的一点点理工知识 (尤其数学 )很有用。我学过的文献学 ,连同童年在私塾读的经 Due to the turmoil in the war environment and the trend of the times, my student life is very tortuous. I have experienced Beiyang Institute of Technology, Tsinghua University, Peking University, studied engineering, science, economics and history, very complex, did not learn. However, later in my study of professional economic history, I found that a little bit of past knowledge of mechanics (especially mathematics) was useful. The bibliography I studied, along with my childhood reading in private school