处之泰然 to remain calm
Explanation
处之泰然是指对待事情或问题能够保持平静、镇定自若的态度，不慌不忙，不为外物所动。
Chǔ zhī tài rán means to maintain a calm and composed attitude towards things or problems, without panic or being swayed by external factors.
Origin Story
春秋时期，著名的思想家孔子非常欣赏他的学生颜回。颜回生活简朴，即使生活条件很差，也总是保持乐观和平静的心态。有一次，颜回的住所十分简陋，只有一张床、一个蒲团，饮食也极其简单，但他却能安贫乐道，处之泰然。孔子得知后，赞叹道："回也，不烦于贫，不忧于患，不骄于富，处之泰然，其道大矣！"
During the Spring and Autumn period, the famous thinker Confucius greatly admired his student Yan Hui. Yan Hui lived simply, and even under poor living conditions, he always maintained an optimistic and calm state of mind. Once, Yan Hui's residence was very simple, with only a bed and a meditation cushion, and his diet was extremely simple, yet he could live contentedly in poverty and remain calm. Confucius, upon learning of this, praised: "Hui, unbothered by poverty, not worried by adversity, not proud of wealth, calm and composed, his way is great!"
Usage
常用于形容一个人在面对困境或压力时，能够保持平静、镇定、从容的态度。
It is often used to describe someone's ability to remain calm, composed, and poised when faced with adversity or pressure.
Examples
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面对突如其来的困境，他处之泰然，冷静地分析解决方法。
miànduì tū rú ér lái de kùnjìng, tā chǔ zhī tài rán, língjìng de fēnxī jiějué fāngfǎ.
Faced with sudden difficulties, he remained calm and calmly analyzed solutions.
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听到坏消息后，她竟然处之泰然，令人惊讶。
tīngdào huài xiāoxī hòu, tā jìngrán chǔ zhī tài rán, lìng rén jīngyà.
After hearing the bad news, she surprisingly remained calm.
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面对巨大的压力，他依旧处之泰然，令人钦佩。
miànduì jùdà de yālì, tā yījiù chǔ zhī tài rán, lìng rén qīnpèi
Faced with enormous pressure, he remained calm and admirable.