Marry a Hong Kong girl and you can immigrate to Hong Kong. .....

You can apply for a one-way permit to come to Hong Kong and become a Hong Kong resident.

When you come to Hong Kong, you can go to the Immigration Department to get your Hong Kong identity card.

When you get married, you can apply for a one-way permit and immigrate to Hong Kong, but you have to wait for the approval of the China government, which usually takes more than three years.

Immigration generally doesn't cost a lot of money, but it can be faster if you have money. Good luck.