@Mike ******
legally you must meet the financial requirement. There are some basic loanshark visa agents that sell you use of a bank account to meet the financial obligations, but they are not legal, with constant efforts made to end them. It is why you must keep bt400,000 in your account for the whole year now, of the bt800,000, to try and end these agents, as the thinking was they would loose to much money, or have to charge too much if bt400,000 was left in the account all year. They will eventually find some other way to stop that loophole.