How to open a personal account in Hong Kong? How much is the charge?

As far as I know, there are three ways for domestic users to open personal accounts in Hong Kong:

Directly witness the opening of personal accounts by Hong Kong banks in domestic banks.

For example, domestic HSBC, China Merchants Bank, Bank of China, etc. There are witness account opening services (because of the high cost, fewer customers are selected).

Open an account in a Hong Kong bank in person.

According to customer feedback, there is a threshold for opening a bank account. It is not excluded that individual banks can open accounts directly)

I want to find an intermediary to handle it.

(Fees will be charged, depending on different banks)