You need two small accounts and one big account, which means every day one account buys you (hereinafter referred to as a), and you flatter the owner, select the top option, which may result in additional payment (it must be singing a little song, requiring a certain status or something else?). Then use another small account to buy you (hereinafter referred to as b) and flatter again. Note that the same account can only buy once a day, thus achieving the purpose of brushing.