Aircraft are seen during a preview of the 2025 aviation open-day activities of the Chinese People's Liberation Army Air Force and Changchun Air Show in Changchun, northeast China's Jilin Province, Sept. 16, 2025. The 2025 aviation open-day activities of the Chinese People's Liberation Army Air Force and Changchun Air Show will be held on Sept. 19, 2025. (Xinhua/Tang Chengzhuo)

Aircraft are seen during a preview of the 2025 aviation open-day activities of the Chinese People's Liberation Army Air Force and Changchun Air Show in Changchun, northeast China's Jilin Province, Sept. 16, 2025. The 2025 aviation open-day activities of the Chinese People's Liberation Army Air Force and Changchun Air Show will be held on Sept. 19, 2025. (Xinhua/Tang Chengzhuo)

Aircraft are seen during a preview of the 2025 aviation open-day activities of the Chinese People's Liberation Army Air Force and Changchun Air Show in Changchun, northeast China's Jilin Province, Sept. 16, 2025. The 2025 aviation open-day activities of the Chinese People's Liberation Army Air Force and Changchun Air Show will be held on Sept. 19, 2025. (Xinhua/Tang Chengzhuo)

Aircraft are seen during a preview of the 2025 aviation open-day activities of the Chinese People's Liberation Army Air Force and Changchun Air Show in Changchun, northeast China's Jilin Province, Sept. 16, 2025. The 2025 aviation open-day activities of the Chinese People's Liberation Army Air Force and Changchun Air Show will be held on Sept. 19, 2025. (Xinhua/Tang Chengzhuo)

Aircraft are seen during a preview of the 2025 aviation open-day activities of the Chinese People's Liberation Army Air Force and Changchun Air Show in Changchun, northeast China's Jilin Province, Sept. 16, 2025. The 2025 aviation open-day activities of the Chinese People's Liberation Army Air Force and Changchun Air Show will be held on Sept. 19, 2025. (Xinhua/Tang Chengzhuo)

Visitors watch a flight demonstration during a preview of the 2025 aviation open-day activities of the Chinese People's Liberation Army Air Force and Changchun Air Show in Changchun, northeast China's Jilin Province, Sept. 16, 2025. The 2025 aviation open-day activities of the Chinese People's Liberation Army Air Force and Changchun Air Show will be held on Sept. 19, 2025. (Xinhua/Tang Chengzhuo)

Visitors take photos during a preview of the 2025 aviation open-day activities of the Chinese People's Liberation Army Air Force and Changchun Air Show in Changchun, northeast China's Jilin Province, Sept. 16, 2025. The 2025 aviation open-day activities of the Chinese People's Liberation Army Air Force and Changchun Air Show will be held on Sept. 19, 2025. (Xinhua/Tang Chengzhuo)

Aircraft are seen during a preview of the 2025 aviation open-day activities of the Chinese People's Liberation Army Air Force and Changchun Air Show in Changchun, northeast China's Jilin Province, Sept. 16, 2025. The 2025 aviation open-day activities of the Chinese People's Liberation Army Air Force and Changchun Air Show will be held on Sept. 19, 2025. (Xinhua/Tang Chengzhuo)

An aircraft is seen during a preview of the 2025 aviation open-day activities of the Chinese People's Liberation Army Air Force and Changchun Air Show in Changchun, northeast China's Jilin Province, Sept. 16, 2025. The 2025 aviation open-day activities of the Chinese People's Liberation Army Air Force and Changchun Air Show will be held on Sept. 19, 2025. (Xinhua/Tang Chengzhuo)

Aircraft are seen during a preview of the 2025 aviation open-day activities of the Chinese People's Liberation Army Air Force and Changchun Air Show in Changchun, northeast China's Jilin Province, Sept. 16, 2025. The 2025 aviation open-day activities of the Chinese People's Liberation Army Air Force and Changchun Air Show will be held on Sept. 19, 2025. (Xinhua/Tang Chengzhuo)