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 crew successfully conducted their first extravehicular activity (EVA) from the node module of the Chinese space station on May 22, marking the 20th EVA in the station's history since the last one on December 26, 2021 [1][3]. Group 1: EVA Details - The Shenzhou-20 crew began their work early in the morning at around 2 AM, requiring them to close three hatches and perform airtight checks before exiting [3]. - The node module's exit hatch is 15 centimeters smaller in diameter compared to the hatch of the Wentian airlock module, adding to the complexity of the EVA [3][5]. Group 2: Reasons for Node Module EVA - The node module serves as a backup airlock for the Wentian module, necessitating its periodic activation to ensure functionality [5]. - The EVA involved installing four protective devices at different locations on the space station, which required a more efficient exit from the centrally located node module [5]. Group 3: Achievements - Astronaut Chen Dong became the first astronaut to complete EVAs from both the Wentian airlock and the Tianhe node module, showcasing the versatility and capability of the crew [5].