神二十一发射时间、乘组，定了！

Core Points - The Shenzhou 21 manned spacecraft is scheduled for launch on October 31 at 23:44 [1] - The crew consists of commander Zhang Lu, flight engineer Wu Fei, and payload expert Zhang Hongzhang, with Zhang Lu having previously flown on Shenzhou 15 [1] - Wu Fei is noted as the youngest astronaut in China, making his first flight [1] Mission Preparation - Preparations for the Shenzhou 21 mission are progressing steadily, with the Long March 2F Yao 21 rocket ready for propellant loading [1] - The spacecraft will use an autonomous rapid rendezvous and docking mode, expected to dock with the Tianhe core module approximately 3.5 hours after launch [1] In-Orbit Operations - During the mission, the Shenzhou 21 crew will receive visits from the Tianzhou 10 cargo spacecraft and the Shenzhou 22 manned spacecraft [1] - The quality of the Shenzhou 21 spacecraft and rocket products is under control, with the crew in good condition and ground systems operating stably [1] - The Shenzhou 20 crew will return to the Dongfeng landing site after completing the in-orbit crew rotation with the Shenzhou 21 crew [1]