Group 1 - The Shenzhou-20 crew, consisting of astronauts Chen Dong, Chen Zhongrui, and Wang Jie, has been in orbit for nearly a month since their arrival at the Chinese space station on April 25 [1] - The crew completed the installation of a space debris protection device on the radial hatch of the core module, which reduces the adverse effects of micro-debris impacts [3] - The crew initiated a groundbreaking experiment on the effects of microgravity and radiation on the regeneration of planarians, marking the first domestic study of its kind [3] Group 2 - In the Wentian laboratory module, the crew observed biological samples and collected solid culture samples, which will aid in research on the microbial effects in cell tissue culture modules [5] - The crew transported cell experiment units to the medical sample preparation device for cultivation and conducted regular observations and sample preservation to support research on cell growth and differentiation in microgravity [5] - The crew conducted on-orbit medical training to familiarize themselves with rescue operations in microgravity and performed a full-system pressure emergency drill simulating internal depressurization [7] Group 3 - The crew completed maintenance and component replacement for various systems, including the regenerative life support system and water dispenser, and conducted cleaning and organization tasks within the station [7] - Regular health checks were performed, including hearing tests, ultrasound examinations, and dynamic electrocardiogram measurements, to monitor the astronauts' health status during their mission [9] - The crew conducted routine inspections and maintenance of three sets of extravehicular spacesuits, ensuring readiness for future spacewalks [9]