宁拆十座庙，不毁一桩婚
nìng​chāi​shí​zuò​miào, bù​huǐ​yī​zhuāng​hūn

preserve marriages

宁拆十座庙，不毁一桩婚 (寧拆十座廟，不毀一樁婚) nìng​chāi​shí​zuò​miào, bù​huǐ​yī​zhuāng​hūn
preserve marriages
It is better to destroy ten temples than to break up a single marriage; an idiom emphasizing the sanctity of marriage and the importance of not interfering in a relationship.

Sources
Definitions
CC-CEDICT