Kinship refers to marriage within three generations. As the first generation, counting from oneself, parents are the second generation, and grandparents and great grandparents are the third generation. They include brothers and sisters from their parents, and collateral relatives from grandparents, including uncles, uncles, nieces, uncles, aunts, nieces, etc. Ancillary relatives of the same generation, including cousins sisters and sisters, who originate from grandparents.
Regulations on consanguineous marriage in China
Marriage between close relatives is explicitly prohibited in our country.
According to Article 6, Paragraph 4 of China's Marriage Registration Regulations, marriage registration authorities shall not register marriages if they belong to direct blood relatives or collateral blood relatives within three generations. That is to say, those within three generations are considered close relatives and are not allowed to get married.