Group 1: Major Achievements in Infrastructure and Exploration - China has achieved historic breakthroughs in major engineering and frontier exploration, including the world's only continuous manned deep-sea diving in the Arctic, the completion of the main structure of Xi'an East Station, and the connection of the longest long-distance heating pipeline in the country [1] Group 2: Arctic Manned Deep-Sea Diving - The Arctic manned deep-sea diving team successfully completed 43 diving missions using the "Fendouzhe" manned submersible, in collaboration with the "Jiaolong" submersible, marking a new model of underwater cooperative operations [2][4] - The team conducted the first manned deep-sea scientific exploration in the Arctic ice zone, reaching a maximum depth of 5,277 meters, and collected valuable samples and observation data to support research on rapid climate change in the Arctic [4] Group 3: Xi'an East Station - The main structure of Xi'an East Station, a key project in China's 14th Five-Year Plan, has been completed, covering a total area of 394,000 square meters and featuring 13 platforms and 27 tracks [5][8] - The station is expected to handle over 36.5 million passengers annually, significantly alleviating passenger flow pressure in the Xi'an railway hub [5] Group 4: Long-Distance Heating Pipeline - The "Liaohuo into Jinan" project, which utilizes waste heat from a power plant in Liaocheng to provide heating for Jinan, has achieved full-line connection, with a total length of 110 kilometers and a diameter of 1.6 meters, making it the longest and largest heating pipeline in China [9][12] - The project is expected to reduce coal consumption by 1.2989 million tons and cut carbon dioxide emissions by 3.564 million tons each heating season, equivalent to the carbon sequestration of four Saihanba forest farms in a year [12]