B1 visa Bank statement

[raju123]

I m studying in china.. I am going to attend conference for a week in Virginia.. My interview is coming...Plz guide me did I need to show my bank balance..

My documents are:-
Appointment letter,
Ds160,
Sponsor letter from my University
Invitation letter
Enrollment of my university
Passport
Cv
Air tickets

Plz guide me what else I need... Did I need to show my bank balance if yes how much balance and is it I hve ti show past 6 months balance