Yes There are sub-projects in the key projects of the National Natural Science Foundation, and Professor Wang Changhui took the lead in undertaking the key projects of the Joint Fund for Regional Innovation and Development of the National Natural Science Foundation and the key special sub-projects of the National Key R&D Plan. Sub-topic is a research branch of general topic setting. If there is no general topic, or the general topic cannot be set with sub-topics, there will be no sub-topics.