1. Handle cash exchange business at the counter of China Industrial and Commercial Bank, deposit Hong Kong dollars into the account, and withdraw the corresponding amount of RMB.

2. Use ICBC mobile banking or online banking to handle foreign exchange, select the transaction type of Hong Kong dollars to RMB, and complete the operation according to the system prompts.

3. If you are in China, you can also go to ICBC's self-service equipment (such as ATM and self-service terminal) to exchange Hong Kong dollars into RMB.