'Xīn xí' literally combines 'xīn' (new) and 'xí' (daughter-in-law), referring specifically to a woman who has recently married into a family — that is, the newlywed wife of one’s son. Unlike the more general term 'xífu' (daughter-in-law), 'xīn xí' emphasizes the freshness of the marital relationship and often carries connotations of transition, adjustment, and early familial integration.

This term is commonly used in spoken and written Chinese when discussing wedding-related events, family introductions, or social expectations placed on new brides. It appears frequently in family conversations, wedding speeches, and media portrayals of traditional family life. While respectful, it is neutral in tone — neither formal nor overly colloquial — and is appropriate in both rural and urban contexts where extended-family structures remain culturally salient.