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Chen Ning Yang celebrates his 90th birthday

(chinadaily.com.cn) Updated: 2012-07-02 13:59

 

Chen Ning Yang celebrates his 90th birthday

Weng Fan, center, helps Chen Ning Yang, right, put on a jacket during an academic forum held by Tsinghua University to commemorate Yang's 90th birthday in Beijing, June 30, 2012. [Photo/Asianewsphoto]

 

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