After my mother divorced, she got married in Taiwan Province Province. Can I visit my relatives in Taiwan Province Province when I am eighteen years old?

Yes, as long as your mother has a residence permit in Taiwan Province Province, she can visit relatives in Taiwan Province Province. Your mother should apply to Taiwan Province Immigration Bureau first. You must notarize the mother-daughter relationship between you and your mother, and then the ARATS will send it to SEF in Taiwan Province Province, and your mother will verify it. But the procedure is really troublesome. Personally, I think it's super troublesome to prepare a lot of things, but I don't need a passport to come to Taiwan Province Province. Just go to the public security bureau and get an entry permit. My friend's daughter, who is also a student, has visited relatives in Taiwan Province Province several times. My friend has not been naturalized in Taiwan Province Province.