General commercial banks can exchange foreign currency. You can go to Bank of China or Industrial and Commercial Bank of China.

The steps are simple. You need to fill out two forms. There are samples in the bank. Just fill it out directly.

Then you need an ID card and a copy. It will be easy when we get to the counter.

However, it should be noted that some banks' foreign currency business is closed at noon. This is related to the bank's own situation, but it is recommended not to go at noon to avoid a trip in vain. Hey hey. ...