"Comrade Li Yuan, please explain the mechanism behind women's menstruation.",At your age, being able to learn to this level is already remarkable. Comrade Li Yuan, congratulations, you can be officially promoted. I hope that in your future studies and work, you can continue to strive for progress, work hard, study diligently, and contribute your strength to the development of traditional Chinese medicine and the socialist construction.,If it weren't for the impending disaster that was too terrible to bear, Li Yuan could have lived a carefree and blissful life in this prosperous era.。