If my student wants to go abroad (France or Italy) with a visa, is it necessary to notarize the kinship?

/kloc-When I was 0/8 years old, I didn't need to be notarized, but I was still in school and my assets needed to be provided to my parents, so I needed to prove that I was a child of my parents. Because your household registration has moved out, you can't prove it directly, so you can finally prove that you are your parents' child at the police station where your parents' household registration is located. Of course, if you have a birth certificate, you don't need to get a certificate, or if you have your own property, you can get that certificate without your parents' property.