多难兴邦duō nàn xīng bāng

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。

英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;