This photo taken on March 9, 2025 shows the one-eighth vacuum chamber and overall installation system, one of the key subsystems of the Comprehensive Research Facility for Fusion Technology (CRAFT), in Hefei, capital of east China's Anhui Province. China has hit another milestone in the development of its next-generation "artificial sun," with one of its key systems passing expert review and acceptance procedures on Sunday, achieving an internationally advanced development and operational capability standard. The one-eighth vacuum chamber and overall installation system was developed by the Chinese Academy of Sciences' Institute of Plasma Physics (ASIPP). It is one of the 19 key subsystems of the Comprehensive Research Facility for Fusion Technology (CRAFT), a platform on which engineers develop and test the key components of fusion energy reactors. (Xinhua/Zhou Mu)