China Eastern Airlines Group Co., Ltd. Flight MU5735 was a flight of China Eastern Airlines Group Co., Ltd. The crashed aircraft was a B737-800NG passenger plane with registration number B1791 and an age of 6.8 years. On March 21, 2022, the Boeing 737-800 aircraft (registration number B-1791) of China Eastern Airlines Yunnan Co., Ltd. operated a regular passenger flight MU5735 from Kunming Changshui Airport to Guangzhou Baiyun Airport. At 13:16, the plane took off from Kunming Changshui Airport and, 64 minutes later, deviated from cruising altitude by 8900 meters and rapidly descended, crashing near Morang Village, Langnan Town, Teng County, Wuzhou City, Guangxi Zhuang Autonomous Region. All 123 passengers and 9 crew members on board were killed. There are traces of fire on the forest vegetation at the scene of the 87 accident. Major debris such as horizontal stabilizer, vertical tail, rudder, left and right engines, left and right wings, fuselage components, landing gear, and cockpit internals were discovered on site. After all the wreckage is searched and collected from the site, it will be transported to a dedicated warehouse for cleaning and identification, and placed according to the actual size and position of the aircraft for subsequent inspection and analysis. After the 89 accident, Xi Jinping, General Secretary of the Communist Party of China, President of the People's Republic of China, and Chairman of the Central Military Commission, immediately issued important instructions. On April 6, 2022, the Civil Aviation Administration of China held a national teleconference on civil aviation safety, pointing out the need to deeply reflect on the "3.21" China Eastern Airlines MU5735 aircraft flight accident and further deepen the understanding of the "five attributes" of aviation safety.