China's C919 jet is seen during the 2020 Nanchang Flight Convention at Yaohu Airport in Nanchang, capital of east China's Jiangxi Province, Oct. 31, 2020. The C919, China's first home-developed trunk jetliner, conducted a successful maiden flight in 2017. The aircraft has begun intensive test flights from various airports to ensure it meets all airworthiness standards. (Xinhua/Zhou Mi)