多难兴邦duō nán xīng bāng
[foreign aggressions often awaken a nation from its slumbers and thus help make it strong;calamities always help to make a nation flourishing much distress regenerates a nation] 邦:国家。《左传·昭公四年》载:“邻国之难,不可虞也。或多难以固其国,启其疆土;或无难以丧其国,失其守宇。”后用“多难兴邦”指多灾多难,使人民勤奋,能把国家振兴起来