Really! March 1, but it is an elective course! Known as "the first person to carry out sex education in schools in Sichuan Province", hu zheng, a professor at Chengdu University Teachers College, has brought a pioneering elective course on sex science and sexual health to nearly 300 adult college students. The two-hour sexual conversation not only made the lecture hall, which can accommodate 300 people, burst into flames, but also made the students laugh from beginning to end.

Please give the best answer and adopt it! thank you