化敌为友

jí shǐ guó jiā lì yì bù jìn xiāng tóng tā men yě kě yǐ huà dí wéi yǒu

即使国家利益不尽相同，他们也可以化敌为友。

Old enemies can become new friends even if all their national interests are not in complete accord.

xì xuè bù néng huà dí wéi yǒu dào cháng shǐ rén shī qù péng you

戏谑不能化敌为友，倒常使人失去朋友。

A joke never gains over an enemy, but often loses a friend.