Each person can only exchange a total of $50,000 per year, but there is no such limit for converting dollars into RMB. You can change $50,000 today, RMB tomorrow, and not dollars the day after tomorrow or even a year later. No matter how much money you have. You can change dollars into RMB at any time by speculating in foreign exchange to earn dollars. But I tell you, unless you are a very powerful expert, about two or three foreign exchange speculators in 100 are profitable, and the others are losing money.