Chen Hongyuan's letter, a page, a greeting card, a real envelope, signed by Mrs. Hong Weilin, an academician of Chinese Academy of Sciences.

Yi Yimin, a professor and chief scientist of doctoral supervisor 973, sent a greeting card to Academician Xu Jianzhong of Chinese Academy of Sciences.

A greeting card from Yan Xu, Vice President of Jiangnan University, to Academician Zhang Shuzheng.

Li Deyi and Qiu Aici, academicians of China Academy of Engineering, sent a 1904 New Year greeting card to Li Deyi.

Xu Xiangde, vice president of China Institute of Meteorological Sciences, signed a greeting card for Academician Tang Xiaoyan.

Han Xiangli, Party Secretary and President of Yantai University, and Guo Mingrui signed a greeting card 1 for the same academician.

A greeting card from Professor Xie to Academician Ying Chongfu.

Xu Xiangde, vice president of China Institute of Meteorological Sciences, signed a greeting card for Academician Tang Xiaoyan.

A New Year greeting card from Academician Li Deyi to Academician Li Deyi of China Academy of Engineering.

Academician Li Deyi's Old Collection The old teacher of Academician Wang Quanliang of Zhejiang Normal University sent a greeting card to Li Deyi.

Academician Li Deyi's old collection and Deng Zhonghan China Academy of Engineering sent Li Deyi a New Year card.

Luo's letter to Xu Guozhi, an academician of China Academy of Engineering, was written on the front of this special greeting card and sealed.

Academician Shen and Academician Shen send a New Year card.

Signature 1 greeting card of Lu Jianguo, a famous professor, electrician and co-opted candidate of China Academy of Engineering.