The format of the temporary power of attorney is flexible, and the following is for reference only:

I _ _ _ _ _ _ _ _ _ (ID number:) entrusted _ _ _ _ _ _ _ _ _ (ID number:) to handle foreign exchange transactions (purchase, settlement or exchange of foreign exchange, write down the exchange currency) on _ _ _ _ _.

Signature/Seal:

Date:

The above is a more rigorous way. At the same time, it is recommended that you bring a certificate of immediate family members when you go to the bank, because some banks will require the temporary client to be an immediate family member of the account holder.