High level. Foundation refers to the National Natural Science Foundation of People's Republic of China (PRC). From the introduction of the meeting, we can know that the key international cooperation projects of NSFC are national key projects, major projects and major research plans, which belong to the definition of advanced projects. According to the principles, policies and plans of national science and technology development, NSFC makes effective use of the National Natural Science Foundation, supports basic research, insists on free exploration and plays a guiding role.