Need a lot of money. When converting US dollars into RMB, it is necessary to provide valid identification documents, and at the same time, it is clearly required that individuals should review the proof of origin of foreign currency cash when handling large-amount foreign currency cash settlement, and it is clear that individuals need to make large-amount exchanges when purchasing foreign exchange in projects other than trade under current account. When converting US dollars into RMB, you need to prepare relevant materials in advance and choose to exchange them at local banks or foreign exchange agencies.