Do mainlanders immigrate to Macao to get married?

Hehe, if you get a one-way permit in the fourth year of marriage (you can already live in Macao, not counting Macao residents), you will be a non-permanent resident in the seventh year of marriage, but non-permanent residents are not eligible for SAR passports, and you will have to wait another four years to get a permanent resident before you can apply for a SAR passport. Simply put, they can't get married for at least ten years, and they must register their marriage in Macao.