闻风丧胆 be terrified at the mere mention of something
Explanation
闻风丧胆，汉语成语，形容对某种力量非常恐惧，听到风声就吓得丧失了勇气。
Wen Feng Sang Dan (闻风丧胆) is a Chinese idiom that describes extreme fear of a certain power. It refers to someone who is so scared that they lose their courage as soon as they hear something.
Origin Story
在古代，有一个名叫李白的将军，他以勇猛善战而闻名。有一天，他率领军队去攻打敌人的城池，敌军听到李白将军的名字，都闻风丧胆，吓得四散逃窜。李白将军的威名，不仅让敌人闻风丧胆，也让百姓们敬佩不已。
In ancient China, there was a general named Li Bai who was known for his bravery and fighting skills. One day, he led his army to attack the enemy's city. When the enemy soldiers heard the name Li Bai, they were terrified and fled in all directions. Li Bai's reputation not only made the enemy afraid, but also earned the respect of the people.
Usage
闻风丧胆常用来形容某个人或某件事让人非常害怕，或者形容某人或某事威力巨大，让人感到恐惧。例如，听到这个消息，那些胆小的人立刻就闻风丧胆。
The idiom “Wen Feng Sang Dan” is often used to describe someone or something that makes people very afraid, or to describe someone or something that is powerful and makes people feel afraid. For example: Upon hearing this news, those who were cowardly immediately became terrified.
Examples
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听到这个消息，那些胆小的人立刻就闻风丧胆。
tīng dào zhège xiāo xi, nàxiě dǎn xiǎo de rén lì kè jiù wén fēng sàng dǎn.
Upon hearing this news, those who were cowardly immediately became terrified.
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敌人闻风丧胆，吓得四处逃窜。
dí rén wén fēng sàng dǎn, xià de sì chù táo cuàn.
The enemy, hearing the news, was terrified and fled in all directions.
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面对强大的对手，他并没有闻风丧胆，而是沉着应战。
miàn duì qiáng dà de duì shǒu, tā méi yǒu wén fēng sàng dǎn, ér shì chén zhuó yìng zhàn.
Facing a powerful opponent, he was not frightened, but fought calmly and confidently.