A leisurely life in

"Comrade Li Yuan, please explain the mechanism behind women's menstruation.",A doctor, especially a traditional Chinese medicine practitioner, whose best quality is patience.,However, Li Yuan's answer made the male doctor with a Mediterranean hairstyle beside Director Tang very happy. He smiled and said, "That's right, our working class is still the most glorious! Li Yuan, I remember you came to our rolling mill through the donation program in 1954 Back then, you were still a rural household registration. After you came to the factory, you took the vocational high school exam"。