Gǔrén / cháng / yòng / qí / dà / fēi / ǒu / lái / xíngróng / mén / bù / dāng / hù / bú / duì / de / hūnyīn

古人常用齐大非偶来形容门不当户不对的婚姻。

People in ancient times often used this idiom to describe a marriage between mismatched families.