Core Viewpoint - The Shenzhou-20 crew successfully completed their fourth extravehicular activity (EVA), marking a significant milestone in China's space exploration efforts, with a focus on collaboration and efficiency in operations [1][10][12]. Group 1: Extravehicular Activity Details - The EVA was conducted by astronauts Chen Dong, Chen Zhongrui, and Wang Jie, who worked closely with ground support to complete tasks including the installation of space debris protection devices and inspection of external equipment [1][7]. - This EVA was notable as it was the first time two astronauts from the third batch worked together on an extravehicular task, showcasing the progress in training and operational capabilities [7][16]. - The astronauts utilized the Tianhe core module's robotic arm for the first time in this context, which allowed for optimized path planning and increased efficiency during the operation [10]. Group 2: Mission Progress and Future Plans - The Shenzhou-20 crew has been in orbit for over 150 days and has successfully completed four EVAs, along with numerous scientific experiments and maintenance tasks [12][14]. - Future plans include conducting additional scientific experiments and technical tests, as well as celebrating national holidays in space [14]. - The crew expressed gratitude for the support from ground teams and highlighted the collaborative spirit that contributed to the success of their missions [16][18].

Group 1 - The core viewpoint emphasizes the leadership of General Secretary Xi Jinping in guiding Tianjin's economic and social development since the 18th National Congress of the Communist Party, focusing on high-quality development during the "14th Five-Year Plan" period [1] - Tianjin is implementing ten actions to promote development through reform, including initiatives like "Beijing-Tianjin-Hebei coordinated development," "science and education-driven city," and "integration of port, industry, and city" [1] - The city is leveraging the high-quality development of the Binhai New Area as a strategic support point for the Beijing-Tianjin-Hebei coordinated development, aiming to establish a national advanced manufacturing and R&D base [3] Group 2 - Notable achievements during the "14th Five-Year Plan" include the development of significant manufacturing equipment, such as the underwater exploration node collection equipment "Haima," which supports marine oil and gas exploration [3] - The launch of the largest self-propelled dredging vessel in Asia, "Tongjun," with a capacity of nearly 40,000 cubic meters, is expected to enhance global dredging and port construction efforts [3] - Tianjin has also produced the Long March 5 series of carrier rockets, which have successfully transported modules for China's first space station, showcasing the city's capabilities in aerospace manufacturing [4]

Core Viewpoint - The Shenzhou 20 mission successfully completed its extravehicular activities with the assistance of the "Wukong AI" model, marking a significant advancement in the integration of artificial intelligence in space operations [1] Group 1: Mission Details - The Shenzhou 20 crew, consisting of astronauts Chen Dong, Chen Zhongrui, and Wang Jie, completed their extravehicular activities after approximately 6.5 hours [1] - The mission involved close collaboration between the astronauts and ground research personnel, utilizing the space station's robotic arm [1] Group 2: Technological Integration - The "Wukong AI" model, launched aboard the Tianzhou 9 cargo spacecraft, served as a new assistant for the Shenzhou 20 crew during their operations [1] - The AI model provided intelligent and specialized support for the astronauts' work in orbit, enhancing the efficiency and effectiveness of their tasks [1]

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]