TIANSHANNET
China's large passenger aircraft, the C919, is seen at the assembly line in Shanghai, east China, Feb. 13, 2018. Staff members here stick to their post to test the C919 to acquire its airworthiness certificates. (Xinhua/Ding Ting)
China's large passenger aircraft, the C919, is seen at the assembly line in Shanghai, east China, Feb. 13, 2018. Staff members here stick to their post to test the C919 to acquire its airworthiness certificates. (Xinhua/Ding Ting)
China's large passenger aircraft, the C919, is seen at the assembly line in Shanghai, east China, Feb. 13, 2018. Staff members here stick to their post to test the C919 to acquire its airworthiness certificates. (Xinhua/Ding Ting)
Staff members work on China's large passenger aircraft, the C919, at the assembly line in Shanghai, east China, Feb. 13, 2018. Staff members here stick to their post to test the C919 to acquire its airworthiness certificates. (Xinhua/Ding Ting)
A staff member works on China's large passenger aircraft, the C919, at the assembly line in Shanghai, east China, Feb. 13, 2018. Staff members here stick to their post to test the C919 to acquire its airworthiness certificates. (Xinhua/Ding Ting)