A C919 large passenger aircraft, China's first homegrown large jetliner, is pictured at Meilan International Airport in Haikou, south China's Hainan Province, Jan. 2, 2023. The aircraft, which belongs to China Eastern Airlines, landed at Meilan International Airport in Haikou on Monday as a part of the 100-hour aircraft validation flight process. The testing process will comprehensively verify the reliability of the C919 with commercial operation in mind -- with the aim of ensuring its safety and efficiency. (Xinhua/Zhang Liyun)