Core Viewpoint - The modernization of the People's Navy is rapidly evolving, with a focus on fourth-generation equipment leading the way and third-generation equipment as the mainstay, indicating a significant transformation in naval capabilities [1] Group 1: Naval Equipment Development - The People's Navy is developing a range of main combat equipment, from small boats to large ships, indicating a comprehensive upgrade in naval strength [1] - The submarine force, which includes strategic nuclear submarines, attack nuclear submarines, and conventional submarines, is highlighted as a key area of development within the People's Navy [1] Group 2: Submarine Capabilities - The conventional submarines are equipped with AIP (Air-Independent Propulsion) systems, allowing them to remain submerged for extended periods without surfacing, enhancing their stealth capabilities [1] - The nuclear submarines include both attack-type submarines, which carry conventional weapons such as torpedoes and missiles, and strategic missile submarines, which can carry a significant number of strategic missiles, thereby increasing sea-based strike capabilities [1]