Dear 863211,
Thank you very much for your timely and detailed advices. It is really good news for me.
I have got TA and RA at the F-1 University.So ,I need to focus on the purpose and the reasons why I want to seek a higher degree.
To convince the VO that I will return China after F-1 study,what documents do you think is good in my case excluding the purpose of further study?
Thank you for your advice and help!!