It is normal for college students not to get married before the age of 27. They graduated at the age of 23 and struggled for four years to lay a solid economic foundation. There are three kinds of unmarried students after the age of 27: first, they have nothing to want in these four years, their jobs are unsatisfactory, they have no money, and no one wants them; Second: cattle people who are still in the entrepreneurial stage want to have everything if they have money; Third: the communication surface is too small to meet friends.