The gender ratio of doctoral students is still very different. The proportion of female doctoral students is higher than that of male doctoral students, and the ratio between them is 4/ 1. Most boys will go to graduate school. After graduation, they will step into the society and find jobs that suit them. Boys will take on more social responsibilities than girls. Stepping into society, girls will get married and have children at the age of 27-30, so girls don't have to step into society too early. The doctoral graduation age is around 28-30.

The ratio of male to female doctors is still very different. Most doctors are women, and there are relatively few men, mainly because men bear more social responsibilities. Basically, after finishing graduate school, they work in the society to make money, while girls, relatively speaking, don't have to consider too much content, so there are more people studying for doctoral degrees.