Roommates live in a room (usually the dormitory or dormitory of a school or unit, or * * * people live in a room) and are roommates. The friendship between roommates is unforgettable. In a narrow sense, the concept roommate refers to the person who is assigned to the same room as himself in the dormitory allocation room. Broadly speaking, it refers to people who live in the same residence but have no relatives, blood ties, marriage or sexual relations, such as people who share a house or live in the same dormitory at school. Cantonese people call this roommate relationship roommates or roommates.