It's too vague to say.

There are about 20 thousand ordinary clerks in Hong Kong (most of them have high English scores)

Salespeople/waiters are only about1~ 20 thousand (but it's not worth coming to Hong Kong for these reasons)

Workers are porters, about 30,000 to 40,000 (Hong Kong lacks workers).

The above is the salary for ordinary jobs.

However, as a mainlander, you need the right of abode to work in Hong Kong, and you can't go there for no reason.

Moreover, wages in Hong Kong look high, but the cost of living is higher.

If there is no clear way out, it will be a bit difficult to develop in Hong Kong.