File photo taken on May 27, 2019 shows staff members of China National Nuclear Corporation (CNNC) Southwestern Institute of Physics working in the vacuum chamber of the HL-2M Tokamak, China's new-generation "artificial sun," in Chengdu, southwest China's Sichuan Province. The HL-2M Tokamak went into operation on Friday and achieved its first plasma discharge, according to China National Nuclear Corporation (CNNC). Designed to replicate the natural reactions that occur in the sun using hydrogen and deuterium gases as fuels, the apparatus in Chengdu, Sichuan Province, will provide clean energy through controlled nuclear fusion, said CNNC. (CNNC Southwestern Institute of Physics/Handout via Xinhua)
