From 0: 00 pour 24: 00 on December 15, 31 provinces (autonomous regions and municipalities directly under the Central Government) and Xinjiang Production and Construction Corps reported 12 newly confirmed cases, all of which were imported from overseas (3 cases in Shanghai, 3 cases in Guangdong, 2 cases in Yunnan, 1 case in Beijing, 1 case in Tianjin, 1 case …