Help urgently! How can an illegitimate child apply for a follow-up account in Hong Kong?

Mainland children of Hong Kong residents can apply to settle in Hong Kong. You can apply for entry and exit at the place where your account is located. Of course, paternity test is required, but it is a designated hospital for entry and exit.

It can be approved within half a year if the age is below 18, and it will be more troublesome if the age is above 18, depending on the relevant policies.