The evaluation of the National Natural Science Foundation of China has strict time nodes and process requirements. If the application for evaluation is not submitted on time, or the submitted materials are not standardized and do not meet the requirements, it will be directly regarded as an invalid application. Therefore, the review of the National Natural Science Foundation cannot be delayed for one or two days.
And the review time is limited. If you miss this time period, you may have to wait a long time for the next opportunity, or even wait another year.