How do mainland residents open personal accounts in Hong Kong banks?

The situation of mainland residents opening accounts in Hong Kong is summarized as follows:

Information: ID card, pass, proof of address, personal bank flow in the Mainland for three months (required by individual banks), and customs clearance receipt.

Interview: Prepare from two aspects. (1) See the figure below for the purpose of opening an account. (2) Remember to show interest in buying bank wealth management products, but then decline.

But the reality is that even if the information prepared is complete or the interview is ok, it may not pass. The following is one of the reasons that banks consider most.