ICBC's current passbook, smart card and e card are divided into single currency and multi-currency. Multi-currency, that is, Hong Kong dollar, US dollar and local currency can be accessed. Generally, accounts opened after 2003 are generally multi-currency.

You can get his account number and deposit it directly at the counter. If you can't deposit it in a single currency, you can only return it to him in cash (note that you and he are both in the same city).

If it is cross-market, it will involve more problems. Generally, foreign exchange can only be remitted to an account with the same name, or it can prove that the payee is in the name of your immediate family. This is the foreign exchange management policy.