HANGZHOU, July 15, 2016 (Xinhua) -- A delegate of United Airlines (1st R) gives the souvenirs to passengers at a ceremony marking the first nonstop passenger flight service from Hangzhou to San Francisco at Xiaoshan Airport in Hangzhou, capital of east China's Zhejiang Province, July 15, 2016. United Airlines on Wednesday inaugurated a three-times-weekly nonstop service from the U.S. West Coast city San Francisco to the southeast Chinese city of Hangzhou. (Xinhua/Huang Zongzhi)