Aerial photo taken on Aug. 12, 2020 shows staff cleaning the runway a day ahead of official flight inspection at the Xiannyushan Airport in Chongqing, southwest China. Xiannyushan Airport in Wulong District of Chongqing has started flight inspection work on Thursday. The new airport, which began construction in April of 2018, features a 2,800-meter runway and a 6,000-square-meter terminal building. (Xinhua/Liu Chan)