Aerial photo taken on April 22, 2017 shows buildings of a science city in Chengdu Tianfu New Area of China (Sichuan) Pilot Free Trade Zone, southwest China's Sichuan Province. The free trade zone in Sichuan covers 119.99 square kilometers, including Chengdu Tianfu New Area, Chengdu Qingbaijiang Railway Port Area and South Sichuan Port Area. (Xinhua/Xue Yubin)
