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. Photo: Xinhua

Photo taken on Nov. 30, 2018 shows a charging device and a new energy vehicle at the headquarters of Chinese carmaker BYD in Shenzhen, south China's Guangdong Province. 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. Photo: Xinhua

A visitor takes a test drive of the Lynk & Co 02 compact crossover at the Geely Research Institute in Hangzhou Bay in Ningbo, east China's Zhejiang Province, July 3, 2018. 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. Photo: Xinhua

Aerial photo taken on Nov. 30, 2018 shows the "Yungui" driverless monorail transit system at the headquarters of Chinese carmaker BYD in Shenzhen, south China's Guangdong Province. 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. Photo: Xinhua

Aerial photo taken on Nov. 30, 2018 shows a "charging tower" for electric vehicles at the headquarters of Chinese carmaker BYD in Shenzhen, south China's Guangdong Province. 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. Photo: Xinhua