泰然自若 Calm and Composed
Explanation
泰然自若是一个褒义词，形容人在紧急情况下沉着镇定，不慌不乱。泰然，形容不慌张，镇定自若；自若，形容象平常一样，没有变化。
Tài rán zì ruò is a commendatory term that describes someone who remains calm and composed in emergency situations, without panicking. Tàirán describes being calm and collected, while zì ruò describes being like usual, unchanged.
Origin Story
战国时期，有个名叫晏婴的齐国外交官，他以智慧和胆识著称。一次，晏婴出使到楚国，楚王想羞辱他，故意派人把一个囚犯打扮成齐国人，并故意让他站在晏婴的面前，然后问晏婴：“听说你们齐国人都喜欢吃人吗？”晏婴泰然自若地回答：“我们齐国人确实喜欢吃人，但只吃那些不讲道理的人。你看这人，穿着囚服，满脸愁容，像个不讲理的人，我们齐国人当然不会吃他。”楚王哑口无言，最终不得不佩服晏婴的机智和风度。
During the Warring States Period in China, there was a diplomatic official from the state of Qi named Yan Ying, who was known for his wisdom and courage. One day, Yan Ying traveled as an envoy to the kingdom of Chu. The King of Chu wanted to humiliate him and deliberately sent someone to dress a prisoner in the clothes of a man from Qi and deliberately have him stand in front of Yan Ying. Then the King of Chu asked Yan Ying: "I hear that people from your state of Qi like to eat people." Yan Ying remained calm and replied: "We people from Qi do indeed like to eat people, but we only eat those who are unreasonable. Look at this man, dressed in prison garb, with a worried look on his face, he looks like an unreasonable person, we people from Qi certainly wouldn't eat him." The King of Chu was speechless and eventually had to admire Yan Ying's intelligence and grace.
Usage
这个成语通常用来形容人在遇到困难、挫折或危险时，能够保持冷静、镇定，不慌不乱，泰然处之。
This idiom is often used to describe someone who can stay calm, composed, and unflustered when faced with difficulties, setbacks, or danger.
Examples
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面对突发事件，他泰然自若，镇定自若。
mian dui tu fa shi jian, ta tai ran zi ruo, zhen ding zi ruo.
In the face of emergencies, he remains calm and composed.
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即使在逆境中，他也能够保持泰然自若的态度。
ji shi zai ni jing zhong, ta ye neng gou bao chi tai ran zi ruo de tai du.
Even in adversity, he can maintain a calm and composed attitude.
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在公众场合，他泰然自若地发表了自己的演讲。
zai gong zhong chang he, ta tai ran zi ruo di fa biao le zi ji de yan jiang.
In public, he calmly delivered his speech.