Trucks drive through the Hekou Port on the China-Vietnam border in Hekou County, southwest China's Yunnan Province, April 11, 2017. Border trade in Hekou Port has been booming along the Chinese border with Vietnam, with total value of import and export reaching 10.63 billion yuan (1.5 billion U.S. dollars) in 2016, up 10.3 percent year on year. (Xinhua/Lin Yiguang)
