Handle credit cards
Apply for an international credit card (you need to pay US dollars online. Visa or MasterCard will do. If you are under 18, you can ask your parents for help. Go directly to the bank counter to explain the purpose of the card, and the bank will help you open it. Credit card of China Merchants Bank is recommended here. Judging from the handling of students over the years, this credit card is the most convenient to use.
Carry dollars
Take some dollars with you before going abroad, but don't take too much. This can solve some basic expenses when I first arrived in the United States.
Handle a bill of exchange
In terms of school tuition, you can first apply for a bill of exchange in China and go to school in the United States with the bill of exchange. You don't need to bring too much cash or swipe your credit card.