Group 1: Shipbuilding Industry - China's shipbuilding industry has seen rapid growth, with an order volume of 26.3 million deadweight tons, accounting for 56% of the global market [3] - Chinese shipyards have a backlog of 23.454 million deadweight tons and new orders of 4.433 million deadweight tons, maintaining the top position globally [5] - The U.S. shipbuilding market share is less than 0.1%, with production capacity less than 1/200 of China's [3][5] Group 2: Medium-Range Missiles - China's Dongfeng series of medium-range missiles, such as Dongfeng-21 and Dongfeng-26, have ranges of 1,700 km and over 4,500 km respectively, providing significant strategic deterrence [7][10] - The U.S. has been hindered by the 1987 Intermediate-Range Nuclear Forces Treaty, which led to a 30-year technological stagnation in medium-range missile development [10] - China's conventional warhead precision guidance technology is globally leading, with lower costs compared to the U.S. [10] Group 3: Air Defense and Missile Defense - China's Hongqi series air defense missile systems, such as Hongqi-9 and Hongqi-19, demonstrate superior capabilities, with ranges exceeding 250 km and the ability to intercept hypersonic missiles [12] - The U.S. defense systems, including the Patriot and THAAD, are aging and have limited coverage compared to China's dense and integrated defense network [12][13] - China has effectively upgraded its air defense systems through self-sufficiency and continuous technological innovation [12] Group 4: Overall Assessment - In shipbuilding, medium-range missiles, and air defense, China holds a global technological and capability lead, making it difficult for the U.S. to catch up in the short term [15] - Despite higher military spending, China's efficiency allows for stronger combat capabilities within a limited budget [15] - The competition between China and the U.S. is expected to intensify, with China's production capacity and technological advancements continuing to expand [15]