1) You cannot apply for a credit card without proof of address
2) Even if you have proof of address, you cannot apply without proof of bank income
3) You You must also have a bank account in Hong Kong
4) Even if you have all the documents in place, since you hold mainland identity, the credit card loan amount will not exceed the total deposit amount in the account
5) Even if you borrow money, do not plan to repay it, and withdraw all the money from the bank, the Hong Kong police will hand over your information to the mainland police, and the mainland police will arrest you and transfer you to Hong Kong for trial. As a result, you will have a criminal record, and your future applications for foreign travel and immigration will be rejected.