杨振宁的首次美国之行及国籍变迁

Chen Ning Yang’s First Trip to the US and Changes of His Citizenship

1957年,旅美青年才俊杨振宁和李政道一起荣幸地成为最早获得诺贝尔奖的中国人。1945年,杨振宁以第六届庚款留美公费生身份出洋深造,1948年获得博士学位,1953年取得美国永久居留权(绿卡),1964年入籍美国。杨振宁深受中国传统文化的熏陶和影响,他身在海外,心系祖国,家国情怀浓厚,一直都在为中国科教事业的进步与发展倾心尽力。2003年,杨振宁重返北京清华园定居,2015年恢复中国籍而放弃美国籍。本文介绍了杨振宁简略生平,借助于家族网(www.familysearch.org)重点梳理了他首次美国之行的前前后后及国籍变迁的方方面面,澄清了一些常见错讹。

In 1957,Chen Ning Yang and Tsung-Dao Lee became the first Chinese to win Nobel prizes.In 1945,Yang was awarded a Scholarship from the Boxer Indemnity scholarship program to study in the US.He received his PhD in 1948,gained US permanent residency(green card)in 1953,and naturalized as an US citizen in 1964.Deeply influenced by Chinese traditional culture,he has held strong attachments to his country of origin even when he was living abroad,contributing great efforts toward the development of science and education in China.In 2003,he returned permanently to China to live at the campus of Tsinghua University in Beijing and in 2015 he renounced his US citizenship and regained his Chinese citizenship.This paper gives a brief overview of Yang’s life,with emphasis on his first trip to the US and changes of his citizenship while clarifying several common misunderstandings in this regard by using information especially from the website www.familysearch.org.