The three astronauts aboard China's Shenzhou-21 mission have completed a diverse range of scientific experiments and routine station maintenance tasks during their second month on the Tiangong Space Station. In the field of space medicine, ongoing research focuses on the kinematic characteristics of astronauts during long-term missions in orbit. Astronauts also conduct studies related to musculoskeletal loading forces, neuroscience, psychological and behavioral capacity, and microgravity physica