Hcmc 6 months bank statement. I've seen many people get approved with the funds being in their account for just a few days prior to application. I think by giving them 6 months bank statement, with the most recent one having 500k proves that you've had that bank account for a while and not only just opened for this purpose.

I recommend Hanoi Vietnam. HCMC asked for extra documents from me twice, extra bank statements and proof of employment. It took 2 weeks. I heard Hanoi is faster