兄弟阋于墙，外御其侮 (兄弟鬩於墻，外禦其侮) xiōngdì xì yú qiáng, wài yù qí wǔ

xiōngdì xì yú qiáng, wài yù qí wǔ phrase internal disunity dissolves at the threat of an invasion from outside
Domain: Proverb 谚语
Notes: (CC-CEDICT '兄弟鬩於墻，外禦其侮')