A cabin crew member explains safety guidelines to a passenger on flight 3U8001 of Sichuan Airlines at Chengdu Tianfu International Airport in southwest China's Sichuan Province, June 27, 2021. Chengdu Tianfu International Airport in southwest China's Sichuan Province has opened for operations, with a Sichuan Airlines flight bound for Beijing taking off on Sunday morning. [Photo by Wang Xi/Xinhua]