出其不意 | [出 其 不 意] to do sth when least expected (成语 saw); to catch sb off guard #29,087 [Add to Longdo] |
出其不意攻其不备 | [出 其 不 意 攻 其 不 备 / 出 其 不 意 攻 其 不 備] catch an enemy off guard with a surprise attack (成语 saw, from Sunzi's Art of War 孫子兵法|孙子兵法) [Add to Longdo] |