Ground staff give directions to flights at the control tower of the Chengdu Tianfu International Airport in Chengdu, capital of southwest China's Sichuan Province, Jan. 22, 2021. 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. (Photo by Zhang Yong/Xinhua)
