SAN FRANCISCO, May 9, 2016 (Xinhua) -- An United Airlines' Boeing 787 Dreamliner to fly the inaugural nonstop flight from San Francisco to China's Xi'an is seen at the San Francisco International Airport, United States, on May 8, 2016. United Airlines celebrated the launch of new nonstop flights from U.S. west coast city San Francisco to Chinese western city Xi'an at the San Francisco International Airport on Sunday. The three-times-weekly seasonal service, the first trans-Pacific service to Xi'an, will be operational between May 8 and Oct. 27, 2016. (Xinhua/Liu Yilin)
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