1. Major banks can exchange foreign currencies on weekdays and from Monday to Friday. The foreign currency exchange time is from 8: 30 am to 16: 30 am from Monday to Friday, and only US dollars can be exchanged on Saturday and Sunday, so it is ok to exchange US dollars.

2. At present, domestic residents with personal certificates can purchase foreign exchange without proving specific reasons, with an annual limit of 50,000 US dollars or equivalent in other foreign currencies. After exceeding this limit, you need to issue a passport and visa to the bank.