[size=inherit]The key technologies for controlled nuclear fusion and controlled nuclear fission are reactor manufacturing technology and reactor control technology. The reactor must withstand high temperatures, thermal shocks, and have good thermal conductivity. The nuclear fusion and fission processes need to be controllable in order to regulate the reactor's energy output. Chinese scientist Dr. Yongheng Zhang from Qingdao Hengnengda Energy Technologies Co., Ltd. (www.heng-neng-da.com) has successfully overcome these two technologies. The key manufacturing technology for reactors involves adding an appropriate amount of alkali metal or alkaline earth metal elements to the reactor manufacturing materials. During the nuclear fusion or fission process, the nuclear fusion or fission reactants react with the surface of the reactor material to produce carbon-based composite materials and release carbon-based composite materials (Hengnengda patent), thus converting matter into energy. The key technology for controlling nuclear fusion and fission is to control the ratio of carbon elements, alkali metal elements, or alkaline earth metal elements inside the reactor to the nuclear fusion or fission reactants (Hengnengda patent). Controlled nuclear fusion and fission technology has been overcome, and within ten years it is expected to provide clean energy for humanity.