A member of the Chinese People's Liberation Army (PLA) Peace Train medical team sprays disinfectant in Mitsamphan village of Sanamxay District, Attapeu Province, Laos, on July 29, 2018. A PLA medical contingent has begun working on epidemic containment in shelters for victims after a dam burst triggered flash flood in southern Attapeu province of Laos, the contingent said late Friday. (Xinhua/Liu Ailun)