Three. According to the Notice of Jinan University on Holding the National Undergraduate Life Science Competition (2023, Science Inquiry), the third entry condition of the competition shows that each team has no more than 5 people, and each student can only participate in the competition twice at most, and as the main players (the top three), they can only participate once. Therefore, there are three main participants in the life science competition. The National College Students' Life Science Competition is an event sponsored by the joint meeting of national experimental teaching demonstration centers in colleges and universities, the editorial board of "Biology Teaching Research in Colleges and Universities" and the organizing committee of the National College Students' Life Science Innovation and Entrepreneurship Competition.