With UCAS, you can apply to 5 universities at one time, which is the maximum number. Each university can only apply for 1 major. However, if the number of universities you apply to is 1, the application fee is 7 pounds. If the number of universities you apply to is more than 1, even if it is 2 or 5 universities, the application fee is the same, which is 17 pounds. It’s best to make sure your credit card has online payment capabilities. I highly recommend China Merchants Bank’s credit card, which is very convenient to use. However, when you apply through UCAS, everything must be in electronic form. If the school needs you to provide paper application materials, it will notify you by email or letter. You can go to a professional service organization to consult about this. My classmate originally went to Beijing Huaheng Education, which was pretty good. for your information.