People visit the Academicians Hall Shanghai in Shanghai, east China, Nov. 17, 2020. The Academicians Hall Shanghai introducing achievements in scientific research of academicians of the Chinese Academy of Sciences and Chinese Academy of Engineering reopened recently to the public after its upgrade. The hall first opened in Shanghai in 2006, with an exhibition area of 2,000 square meters. (Xinhua/Wang Xiang)

People view the model of Shanghai Stadium designed by Wei Dunshan, academician of Chinese Academy of Engineering, at the Academicians Hall Shanghai in Shanghai, east China, Nov. 17, 2020. The Academicians Hall Shanghai introducing achievements in scientific research of academicians of the Chinese Academy of Sciences and Chinese Academy of Engineering reopened recently to the public after its upgrade. The hall first opened in Shanghai in 2006, with an exhibition area of 2,000 square meters. (Xinhua/Wang Xiang)

People visit the Academicians Hall Shanghai in Shanghai, east China, Nov. 17, 2020. The Academicians Hall Shanghai introducing achievements in scientific research of academicians of the Chinese Academy of Sciences and Chinese Academy of Engineering reopened recently to the public after its upgrade. The hall first opened in Shanghai in 2006, with an exhibition area of 2,000 square meters. (Xinhua/Wang Xiang)

People visit the Academicians Hall Shanghai in Shanghai, east China, Nov. 17, 2020. The Academicians Hall Shanghai introducing achievements in scientific research of academicians of the Chinese Academy of Sciences and Chinese Academy of Engineering reopened recently to the public after its upgrade. The hall first opened in Shanghai in 2006, with an exhibition area of 2,000 square meters. (Xinhua/Wang Xiang)