上行下效 Follow the lead of superiors
Explanation
这个成语意思是上面的人怎么做，下面的人就跟着怎么干。形容人们习惯模仿上级或社会上的风气，缺乏独立思考。
This idiom means that people do what their superiors or society does. It reflects that people are used to imitating their superiors or social trends without thinking for themselves.
Origin Story
古代有一个国王，他非常喜欢穿金戴银，每天都要换不同的衣服，还要求大臣们也要穿得光鲜亮丽。大臣们为了讨好国王，纷纷效仿他的做法，把自己的家产都拿出来买金银珠宝，给自己置办华贵的衣服。结果，大家都穷得揭不开锅了，国家也因此变得贫困。
In ancient times, there was a king who loved to wear gold and silver, and he changed his clothes every day. He also demanded that his ministers dress up in bright clothes. In order to please the king, the ministers imitated his actions, taking out their own property to buy gold and silver jewelry, and equipping themselves with luxurious clothes. As a result, everyone was so poor that they could not make ends meet, and the country also became impoverished.
Usage
这个成语多用于批评那些不加思考，盲目模仿别人的行为。
This idiom is often used to criticize those who blindly imitate others without thinking.
Examples
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领导要求加班，大家都上行下效，加班成了常态。
lǐng dǎo yāo qiú jiā bān, dà jiā dōu shàng xíng xià xiào, jiā bān chéng le cháng tài.
The leader asked everyone to work overtime, and everyone followed suit, making overtime the norm.
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这个公司上下级之间关系融洽，上行下效，营造了良好的工作氛围。
zhè ge gōng sī shàng xià jí zhī jiān guān xì róng qià, shàng xíng xià xiào, yíng zào le liáng hǎo de gōng zuò fèn wéi.
The relationship between superiors and subordinates in this company is harmonious. Everyone follows the example of their superiors, creating a good working atmosphere.