Chinese People's Liberation Army (PLA)'s Peace Train medical team, assisted by the Lao side, helps a Chinese tourist injured in a bus crash in northern Laos to get on the PLA Z-8G rescue helicopter in Wattay International Airport in Vientiane, Laos, Aug. 22, 2019. The Chinese People's Liberation Army (PLA)'s Peace Train medical team has accompanied four Chinese tourists badly injured in a deadly bus crash in northern Laos to take flights back to China Thursday afternoon. (Photo by Xiong Tianze/Xinhua)