Photo taken on Dec. 4, 2020 shows the site of the completion ceremony of HL-2M Tokamak, China's new-generation "artificial sun," in Chengdu, southwest China's Sichuan Province. The HL-2M Tokamak went into operation on Dec. 4, 2020 and achieved its first plasma discharge, according to China National Nuclear Corporation (CNNC). (Xinhua/Zhang Chaoqun)
