Can a Chinese person see a doctor in the US for free?

It is not possible to see a doctor for free. But if you go to the U.S. to travel or do something else and suddenly get sick, certainly a more serious illness, you can go to the emergency room. In the US it's see the doctor first, pay later. As a tourist, when you get well, you can go back to your country and of course the other party cannot receive your money.