烈火真金

Pinyin: liè huǒ zhēn jīn Usage: 偏正式；作主语、谓语、宾语；用于对人的考验 Explanation: 烈火：熊熊大火，猛烈的火。真金不惧火炼，在烈火中可以鉴别出真正的黄金 Example: 疾风知劲草，烈火真金。 Thesaurus:  Strong winds test the sturdiness of grass., Lu yao to know Horse, time reveals a person’ s heart, hardy grass in the storm