The Shenzhou-14 is the first and the toughest manned mission during China's space station construction phase and has great significance, according to Huang Weifen, chief astronaut system designer of the China Manned Space Program.

Huang said that the crew – Chen Dong, Liu Yang and Cai Xuzhe – selected from the second cohort of Chinese astronauts are the most suitable.

"The three are all very diligent and careful and they have great team spirit and friendship among them," she said.

CGTN's Zheng Yibing spoke to Huang, who talked about the personalities of the crew members and how the Shenzhou-14 mission will contribute to the construction of China's space station.