Core Insights - The Shenzhou-20 crew successfully completed their third extravehicular activity, with the space station's extravehicular suit B achieving a milestone of 20 outings over 4 years, marking a significant advancement in China's space suit technology [1][2]. Group 1 - The extravehicular suit B has been used by 11 astronauts across 8 manned missions, demonstrating stable performance and supporting the operational needs of the space station [1]. - The suit has undergone significant enhancements in functionality and performance compared to the first-generation suits, focusing on longevity, safety, and operational efficiency [1]. - The extravehicular suit is the first flight product to undergo in-orbit lifespan assessment and extension, with a design life nearing its limit of 3 years and 15 outings by early 2024 [2]. Group 2 - A scientific and reasonable lifespan assessment and health monitoring plan has been developed to evaluate the remaining life of the extravehicular suit, ensuring its safe and reliable use in orbit [2]. - Two new extravehicular suits, D and E, have been successfully unpacked and tested, and will be gradually introduced in future extravehicular activities [2].