Generally, you need to pay a deposit when checking into a hotel. When you check in at the hotel front desk, the front desk will charge an advance charge of S$200 on your credit card. Just wait until you check out to cancel it. As long as your credit card is multi-currency, that's fine. For example, the black multi-currency VISA credit card issued by China Merchants Bank can perform such operations. If your credit card can only be used for consumption in RMB and US dollars, it should be OK. The consumption at that time was actually using US dollars to buy new currency.