A staff member (L) teaches a customer how to charge a sharing electric car in Gu'an County of north China's Hebei Province, March 15, 2018. China's GDP reached 19.88 trillion yuan (about 3.2 trillion U.S. dollars) in the first three months of 2018, up 6.8 percent year on year at comparable prices, according to the National Bureau of Statistics (NBS). (Xinhua/Wang Xiao)