204天！神二十乘组刷新中国航天员新纪录

Core Viewpoint - The successful landing of the Shenzhou 21 manned spacecraft marks a significant achievement in China's space exploration efforts, highlighting advancements in long-duration space missions and scientific research capabilities [1] Group 1: Mission Achievements - The Shenzhou 20 crew spent 204 days in orbit, setting a new record for the longest single crew duration in space for Chinese astronauts [1] - During the mission, the crew conducted four extravehicular activities and multiple cargo transfer tasks, demonstrating operational efficiency and mission complexity [1] Group 2: Scientific Research - The mission involved extensive scientific experiments across various fields, including microgravity fundamental physics, space materials science, space life science, aerospace medicine, and aerospace technology [1] - Ground-based researchers closely collaborated with the crew to ensure the successful execution of numerous space science experiments [1]