Core Viewpoint - The Shenzhou-20 spacecraft successfully returned to Earth, completing its mission and demonstrating its capability for a 9-month stay in orbit [2] Group 1: Mission Accomplishments - The Shenzhou-20 spacecraft spent a total of 270 days in orbit, successfully completing all primary tasks related to China's space station emergency operations [2] - The spacecraft was originally scheduled to return on November 5, 2025, but adjustments were made due to a discovered crack in the window [2] Group 2: Technical Developments - A triangular crack was identified on the spacecraft's window, prompting the crew to install a window crack treatment device to enhance thermal protection and sealing during re-entry [2] - The Shenzhou-21 crew utilized an EVA opportunity to closely photograph the window crack for further assessment [2] Group 3: Future Missions - The Shenzhou-23 spacecraft has arrived at the Jiuquan Satellite Launch Center, with the Long March 2F Yao-23 rocket set to be launched soon as part of the ongoing backup mission [2]