If you travel or work in Vietnam and bring back some Vietnamese dong and want to change it into RMB, the legal way is to exchange it through China Bank, Industrial and Commercial Bank, Agricultural Bank and commercial banks recognized by China Construction Bank. These banks have foreign exchange services to ensure the compliance of transactions. It should be noted that in addition to the currencies listed above, such as pounds, dollars, euros, etc. Old coins from other countries such as Peru and Chile should be avoided because they may not circulate in China.

In China, in addition to the official exchange point, there are some cases where foreign currency cannot be exchanged. For example, Chinese mainland Commercial Bank does not accept old coins, damaged coins and some small currencies that have stopped circulating. In view of this situation, third-party payment platforms such as Alipay provide secured transaction services, which can legally handle these precipitated foreign currencies and reduce unnecessary foreign exchange settlement losses.

In terms of coin exchange, the common freely convertible coins in the world are 1 pound, 1 dollar and 5 Swiss francs, as well as some specific denominations of Japanese yen, Canadian dollar, Australian dollar, euro, Hong Kong dollar and Macao dollar. Remember, legal exchange is the key to ensure the safety of your funds, and try to avoid private transactions or the use of currencies that cannot be exchanged.