China's Shenzhou-15 astronauts return to Earth on June 4, having completed all their scheduled tasks. The three astronauts handed over control of the space station to the Shenzhou-16 crew on Friday, completing the country's second in-orbit crew rotation. They will touch down at Dongfeng landing site in north China's Inner Mongolia Autonomous Region, which has completed the preparations for their return. Join CGTN for the special coverage.