故作镇静 pretend to be calm
Explanation
故意装作镇定自若的样子，实际上内心可能并不平静。
To deliberately act calm and composed, while actually feeling unsettled.
Origin Story
话说唐朝时期，京城一位名医，因治好了皇后的病而受封为御医。一次，他进宫给皇上看病，皇上脸色苍白，气息微弱，御医们束手无策。这位御医上前，细致地检查了皇上的脉搏，神情严肃，并故作镇静地吩咐宫女准备药材。其实，他心里慌得厉害，因为他也从未见过这样的病症。然而，他凭借着多年的行医经验，以及他那沉着冷静的外表，成功的稳定了皇上的病情，终于找到了治疗的办法。御医的故作镇静，不仅稳定了皇上的情绪，也使自己能够冷静下来思考，最终化解了危机。
In the Tang Dynasty, a famous physician in the capital was appointed imperial physician after curing the empress’s illness. Once, when he went to the palace to treat the emperor, the emperor's complexion was pale, his breath weak, and the imperial physicians were at a loss. This physician stepped forward, carefully examined the emperor's pulse, his expression serious, and calmly ordered the palace maids to prepare the herbs. In reality, he was very panicked, because he had never seen such an illness before. However, relying on years of medical experience and a calm demeanor, he successfully stabilized the emperor's condition and finally found a way to treat him. The physician's composure not only calmed the emperor but also allowed himself to think calmly, ultimately resolving the crisis.
Usage
用于形容一个人在遇到紧急情况或困难时，表面上装作镇静，以掩饰内心的慌张或不安。
Used to describe someone who appears calm on the surface when encountering an emergency or difficulty, to conceal inner panic or anxiety.
Examples
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他故作镇静，其实心里很害怕。
ta gu zuo zhen jing, qishi xinli hen haipa.
He pretended to be calm, but he was actually very scared.
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虽然事故现场一片混乱，但他故作镇静地指挥救援工作。
suiran shigu xianchang yipian hunluan, dan ta gu zuo zhen jing de zhihui jiuyu gongzuo.
Although the accident scene was chaotic, he calmly directed the rescue work.