There are more than 3,500 universities in the United States, of which 5 are top universities and 228 are second-class to fourth-class universities, accounting for less than 10% of the total number of universities in the United States. Most of the top 50 universities in the United States require students to have excellent SAT scores to enter the school, while many universities with lower rankings also have first-class majors in the United States, attracting the best students. At present, there are more than 64,000 China students studying in the United States, ranking second among overseas students in the United States. Last year, more than 25,000 China students applied for visas to the United States, and it is expected that the number of applicants will increase to more than 29,000 this year.