视频丨航天员陈冬顺利出舱：我们回来了！为伟大的祖国骄傲！

Core Points - The Shenzhou 21 manned spacecraft successfully landed, marking a significant achievement in China's space exploration efforts [1] - Astronaut Chen Dong expressed pride in completing the mission and emphasized the challenges faced in space exploration [1] - The mission served as both a training exercise and a test for the Chinese space program, showcasing its resilience [1] Summary by Categories - Mission Success - The successful landing of the Shenzhou 21 spacecraft highlights China's advancements in space technology and exploration [1] - Astronaut Experience - Astronaut Chen Dong described the return journey as reassuring and expressed gratitude towards those who ensured their safe return [1] - National Pride - Chen Dong conveyed a strong sense of pride in the accomplishments of the Chinese space program and the nation's efforts in space exploration [1]