The more examples celebrities dare to practice, the better, and it is best to have counterexamples.

1, when Li Shizhen was young, he heard that there was a magical plant called Datura, and Li Shizhen finally found this plant after some twists and turns. In order to find out what is going on, he personally took Datura stramonium and found that it has anesthetic and exciting effects, and a small amount can cure the disease. Later, Datura stramonium was widely used to make anesthetics. The story of Li Shizhen and Datura tells us that "theory comes from practice". He often tried to verify some legends and changed many superstitious ideas and practices of people at that time. 2. Wang Qingren was a famous physician in Qing Dynasty. When he studied Huangdi Neijing, he found many mistakes in the book. Therefore, he is determined to correct the part about human body structure. He observed more than 300 cases of unburied bodies in plague areas, dissected them one by one, and drew a large number of internal organs maps. Wang Qingren corrected some mistakes in Huangdi Neijing, and wrote a book "Correction of Medical Forest" with 25 human body structure charts.