Li Qingshan, vice-chairman of the Shanxi Provincial Committee of Chinese People’s Political Consultative Conference, gives a speech at the Fifth National Conference on Biology, Physics and Chemistry at Shanxi University. [Photo/sxu.edu.cn]

Zhang Tiancai, vice-president of Shanxi University, gives a speech at the Fifth National Conference on Biology, Physics and Chemistry at Shanxi University. [Photo/sxu.edu.cn]