1929年,我父亲就任清华大学算学系教授,我们一家搬入了清华园居住,那时我7岁。在清华园里我过了8年的童年生活,直到1937年抗战开始。关于那8年的生活,我曾在1983年的一篇演讲中这样描述:“清华园的8年在我的回忆中是非常美丽、非常幸福的。那时中国社会十分动荡,内忧外患、困难很多。但我们生活在清华园的围墙里头,不大与外界接触。我在这样一个被保护起来的环境里度过了童年。”今年我即将82岁了,最近搬回清华园 In 1929, my father became professor of Department of Mathematics at Tsinghua University, and our family moved to Tsinghua Garden where I was 7 years old. In Tsinghua University I spent eight years of childhood, until the war began in 1937. As for the 8 years of life, I described it in a speech in 1983: “Tsinghua University’s eight years are very beautiful and very happy in my memory when China was in turmoil and internal and external problems, It is a lot more difficult, but we live in the fence of Tsinghua University and have little contact with the outside world. I spent my childhood in such a protected environment. ”" I am about 82 years old this year and recently moved back to Tsinghua Park