Combination photo taken on Jan. 22, 2021 shows airliners of six airline companies passing the water gate during the flight-test ceremony held at the Chengdu Tianfu International Airport in Chengdu, capital of southwest China's Sichuan Province. The Chengdu Tianfu International Airport started flight-test of real planes on Friday. The airport, one of the country's largest civil airport projects, was slated to be basically completed by the end of 2020 and officially put into operation in the first half of 2021. (Xinhua/Wang Xi)
