An unmanned bus is pictured at Hainan Boao Lecheng International Medical Tourism Pilot Zone in Boao, south China's Hainan Province, March 27, 2019. China has established the world's most comprehensive new energy vehicle (NEV) supporting system, Huang Libin, spokesman with the Ministry of Industry and Information Technology, said at a recent news conference. During the first quarter, China's NEV production and sales amounted to 304,000 and 299,000 vehicles respectively, up 102.7 percent and 109.7 percent. (Xinhua/Guo Cheng)