Core Viewpoint - The 2025 Air Force Aviation Open Day and Changchun Air Show commenced on September 19, marking the largest and most content-rich event since 2019, showcasing the capabilities of the H-6K bomber family and its strategic significance for national defense [1]. Group 1: Event Overview - The Changchun Air Show is the fourth aviation exhibition held in Changchun since 2019 and features the largest scale and most diverse content to date [1]. - The flying display of bombers, particularly the H-6K, left a significant impression on attendees, symbolizing national strength and the commitment of the People's Air Force to protect national airspace [1]. Group 2: H-6K Bomber Capabilities - The H-6K bomber has transitioned from "platform operations" to "system operations," indicating a strategic shift from coastal defense to far-reaching deterrence capabilities [1]. - The H-6K has been involved in various large-scale missions, including regular training and patrols in the Western Pacific and East China Sea, enhancing its role in maintaining national sovereignty [1]. Group 3: Technical Aspects of Bomber Operations - The low-altitude formation flying of the H-6K is technically challenging due to its size and power, requiring high precision from the crew [6]. - This capability has practical combat value, as low-altitude flying can help evade radar detection during missions, allowing for surprise attacks [8]. Group 4: Armament and Variants - The H-6K is equipped with multiple hardpoints for carrying large missiles, including cruise missiles and hypersonic missiles, enhancing its long-range strike capabilities [9][11]. - Variants of the H-6, such as the H-6H, are designed for specific roles, including anti-ship operations, with modifications to their radar and sensor systems [14][16].