Chen Dong (C), Chen Zhongrui (R) and Wang Jie, the three Chinese astronauts for the upcoming Shenzhou-20 spaceflight mission, met the press on Wednesday.Chen Dong participated in the Shenzhou-11 and Shenzhou-14 space missions. He served as the commander of the Shenzhou-14 crew and will take on the mantle once again after a two-year interval. He will also become the first among China's second batch of astronauts to carry out three spaceflight missions.Chen Zhongrui and Wang Jie both come from the third batch of astronauts and will embark on their first spaceflight mission. Before being selected, Chen Zhongrui was an air force pilot, while Wang Jie was an engineer at the China Academy of Space Technology under the China Aerospace Science and Technology Corporation.