飞天远航行神州！2025大国重器，提气！

Group 1 - China's planetary exploration program successfully launched the Tianwen-2 probe on May 29, 2025, with missions including the exploration and sample return from asteroid 2016H03 [3] - The Tianwen-3 probe captured a "selfie" with Earth, showcasing the Chinese flag alongside the planet [3] - The Shenzhou-33 manned spacecraft completed its mission, with astronauts spending 204 days in orbit, setting a new record for the longest duration for a single crew in Chinese space history [9] Group 2 - The successful launch of the Shenzhou-33 on November 25 marked China's first emergency manned space mission, achieving full automation in the process [10] - As of December 22, 2025, China has over 400 remote sensing satellites in orbit, enabling all-weather, all-time Earth observation and providing high-quality data for disaster monitoring [13] - The "Fendouzhe" manned submersible completed 43 dives in the Arctic, making China the only country capable of continuous operations in that region [18] Group 3 - The Fujian aircraft carrier, China's first electromagnetic catapult carrier, was officially commissioned on November 5, 2025, marking a significant advancement in naval capabilities [17] - The "Hai Ling Plan" aims to build an underwater telescope in the South China Sea, successfully testing key components in 2025 to capture neutrinos and explore the origins of the universe [21] - China's underwater oil and gas pipeline network exceeded 10,000 kilometers in length, showcasing significant advancements in marine engineering capabilities [24] Group 4 - The CR450 high-speed train prototype achieved a record speed of 453 km/h in 2025, with plans for a 400 km/h operational speed [28] - The Urumqi-Kuerle expressway, a "super highway," reduced travel time from 7 hours to 3.5 hours, enhancing connectivity [31] - The first hydrogen-powered regional train completed trials in July 2025, achieving zero carbon emissions with a range exceeding 1,000 kilometers [34]