苍穹有鸣、深海有应，看大国重器“上天入海”

Core Insights - The article highlights the advancements in China's aerospace and marine exploration capabilities, showcasing the successful flight of the J-20 stealth fighter and the collaborative underwater operations of the "Jiaolong" manned submersible and an unmanned submersible [1][5]. Aerospace Industry - The J-20, China's first fifth-generation stealth fighter, has high stealth, situational awareness, and maneuverability, significantly enhancing strike success rates and enabling integrated operations with other aerial platforms [1][5]. - The J-20's maiden flight occurred on January 11, 2011, marking a milestone in China's aviation history, reflecting two decades of development in the aerospace industry [3][5]. - The successful development of the J-20 positions China among a select group of nations capable of independently developing stealth fighter jets, representing a historic leap in its aviation capabilities [5]. Marine Exploration Industry - The 15th Arctic Ocean scientific expedition marked China's largest Arctic research mission to date, involving the "Xuelong 2," "Jidali," "Shenhai Yihao," and "Tansuo Sanhao" vessels [5][10]. - The "Jiaolong" manned submersible and an unmanned submersible conducted the world's first underwater collaborative operations in polar regions, enhancing data comparability and operational efficiency [6][8]. - The expedition collected a significant number of biological samples, totaling 183 items across 12 categories, and filled gaps in high-latitude oceanographic surveys [10][12]. - The research improved understanding of the formation mechanisms of "marine snow" in the Arctic, contributing to ecological studies related to sea ice retreat [14].