The winning rate is about 20%. The winning rate of college students' social practice of energy saving and emission reduction and scientific and technological competition is about 20%. Take the 15th National College Students' Social Practice Science and Technology Competition of "600 Light-years Cup" as an example. More than 500 colleges and universities across the country signed up for the competition, more than 5,000 teams participated in the competition, and 1000 groups won prizes, with a winning rate of about 20%.