媳妇比老婆来的好听
[xí fù bĭ lăo pó lái de hăo tīng]
It sounds better to call one's beloved as 'xifujie'(a term used in northern China, similar to calling one’s husband’s mother 'mother-in-law') rather than 'laopo'.(wife) It might represent a preference in addressing one’s partner lovingly and respectfully.