Legal analysis: The review arrangement of 20021National Natural Science Foundation of China has four important time nodes: the end of the preliminary review (the time of rejection notice), the time of reexamination application and the time of centralized acceptance review. The preliminary examination shall be conducted before the middle of May (that is, the preliminary examination of the Fund Committee is completed), and a notice of rejection shall be issued. If the applicant did not receive any news on May 2 1, the application was successful through letter review (communication review).

Legal basis: Article 16 of the Law of People's Republic of China (PRC) on the Progress of Science and Technology, the state establishes a natural science fund to fund basic research and frontier exploration of science and cultivate scientific and technical talents.