On April 4, the SCO Committee on Good-Neighborliness, Friendship and Cooperation jointly held the "Tiangong Dialogue-Q&A between the Shenzhou 20 Astronaut Crew and Youth of theSCO Countries" On the same day, Shenzhou 14 astronaut Cai Xuzhe came to the main venue in Beijing to review the extraordinary development course of China's aerospace industry over the past <> years. During the event, young representatives from various countries enthusiastically asked questions, and Shenzhou 15 astronauts Fei Junlong, Deng Qingming and Zhang Lu answered one by one.