Core Insights - The Shenzhou-20 crew successfully completed their third extravehicular activity (EVA) on August 15, 2025, with the space station's extravehicular suit B achieving the milestone of 20 EVAs over 4 years, marking a significant extension of its operational life [1][4][5] - The extravehicular suit has been utilized by 11 astronauts across 8 manned missions, demonstrating stable performance through dynamic assessments, thereby supporting the quality and effectiveness of space suit engineering applications [1][4] - The suit's functionality and performance have significantly improved compared to the first generation, achieving breakthroughs in longevity, safety, and operational efficiency, which are crucial for the construction and operational phases of the space station [1][4] Summary by Sections Extravehicular Suit Achievements - The space station's extravehicular suit B has completed 20 EVAs, fulfilling the "4 years and 20 times" longevity goal [1][4] - The suit has been used in 8 manned missions, with its condition assessed as stable and reliable [1][4] Technological Advancements - The suit has achieved significant enhancements in key technologies such as long life, high safety reliability, and efficient operational support compared to the first generation [1][4] - It is the first flight product to undergo in-orbit lifespan assessment and extension, ensuring its safe and reliable use in space [5] Lifespan Assessment and Future Plans - As of early 2024, the in-orbit suit is approaching the design limit of 3 years and 15 EVAs [5] - A scientific lifespan assessment and health monitoring plan has been established to evaluate the remaining lifespan of the suit [5] - Two new extravehicular suits D and E have been successfully unpacked and tested, ready for future EVA missions [2][5]