
Chinese astronauts Yang Liwei (3rd L), Jing Haipeng (2nd R) and Chen Dong (2nd L) interact with pupils at an exhibition on science and technology at Victoria Park, Hong Kong, south China, June 29, 2017. (Xinhua/Qin Qing)

Chinese astronauts Yang Liwei (3rd L), Jing Haipeng (2nd R) and Chen Dong (2nd L) interact with pupils at an exhibition on science and technology at Victoria Park, Hong Kong, south China, June 29, 2017. (Xinhua/Qin Qing)