Son who immigrated to Hong Kong

I am in the same situation as your department. My mother is 62 years old and I am 22 years old. My mother has not lived in Hong Kong for seven years in a row. She is not a permanent resident, but an ordinary resident. But as long as her parents are over 60, they can apply for a child and stay in Hong Kong as ordinary residents in the name of caring for their parents. I'm sure I can answer you. Please score! !