American visa mainly depends on your ability to live in the United States, that is, financial resources.
Second, do you have an immigration tendency? That is to say, it is basically not a problem to get ready for where to go after reading. China nationality is very experienced, and Japanese nationality does not sign the bill. Many Japanese girls go to school and want to find someone in CA to get married and stay in the United States, hehe, so you just need to explain these two points clearly.
Oil; Fuel filling; Make greater efforts