Legal analysis: Brothers and sisters are not immediate relatives, but collateral relatives. Lineal relatives refer to people who have direct blood relationship or marriage relationship with themselves, that is, lineal blood relatives and lineal in-laws, such as spouses, parents, children, grandparents and grandchildren. Collateral relatives refer to people who have the same blood relationship with themselves and their spouses, such as brothers, sisters, uncles, aunts, aunts, etc. Collateral blood relatives within three generations refer to relatives who have blood relations with themselves within three generations. The three generations here are three generations counting from themselves.
Legal basis: Article 1045 of the Civil Code of People's Republic of China (PRC). Relatives include spouses, blood relatives and in-laws. Spouse, parents, children, brothers and sisters, grandparents, grandparents, grandchildren and grandchildren are close relatives. Close relatives such as spouses, parents and children living together are family members.