Xi Jinping, general secretary of the Central Committee of the Communist Party of China, Chinese president and chairman of the Central Military Commission, talks to academicians, specialists and teachers at Nankai University in Tianjin, north China, Jan. 17, 2019. Xi was on an inspection tour in Tianjin Thursday. (Xinhua/Xie Huanchi)

　　Xi Jinping, general secretary of the Central Committee of the Communist Party of China, Chinese president and chairman of the Central Military Commission, visits an exhibition on Nankai University's 100-year history at the university in Tianjin, north China, Jan. 17, 2019. Xi was on an inspection tour in Tianjin Thursday. (Xinhua/Xie Huanchi)

　　Xi Jinping, general secretary of the Central Committee of the Communist Party of China, Chinese president and chairman of the Central Military Commission, visits an exhibition on Nankai University's 100-year history at the university in Tianjin, north China, Jan. 17, 2019. Xi was on an inspection tour in Tianjin Thursday. (Xinhua/Xie Huanchi)

　　Xi Jinping, general secretary of the Central Committee of the Communist Party of China, Chinese president and chairman of the Central Military Commission, visits an exhibition on Nankai University's 100-year history at the university in Tianjin, north China, Jan. 17, 2019. Xi was on an inspection tour in Tianjin Thursday. (Xinhua/Xie Huanchi)