纨绔子弟 dandy
Explanation
指那些出身富贵人家，衣食无忧，却游手好闲，不务正业的年轻人。他们通常衣着华丽，生活奢侈，缺乏责任感和进取心。
Refers to young people from wealthy families who live carefree lives but are idle and unproductive. They usually dress luxuriously, live extravagantly, and lack a sense of responsibility and ambition.
Origin Story
话说江南小镇，有个富商老李，家财万贯，独子李明自小锦衣玉食，养成了纨绔习气。李明不喜读书，整日与狐朋狗友厮混，斗鸡走狗，挥金如土，赌博嫖妓，无恶不作。老李虽多次劝诫，但李明不以为然，依旧我行我素。终于，家产败尽，李明沦落街头，昔日荣华富贵如过眼云烟。他悔恨莫及，但为时已晚。
Once upon a time, in a small town in southern China, there lived a wealthy merchant named Lao Li, who possessed a vast fortune. His only son, Li Ming, grew up in luxury and developed a spoiled mentality. Li Ming hated reading and spent his days with bad friends, cockfighting, dog racing, lavish spending, gambling and prostitution. Although Lao Li often warned him, Li Ming ignored this and persisted in his behavior. Finally, his possessions were gone and Li Ming lived on the streets. Past wealth was like a fleeting dream. He deeply regretted it, but it was too late.
Usage
用于形容那些不学无术，游手好闲的富家子弟。
Used to describe those wealthy young people who are uneducated and idle.
Examples
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他家是当地有名的富户，但他儿子却是个不学无术的纨绔子弟。
tā jiā shì dāng dì yǒu míng de fù hù, dàn tā ér zi què shì ge bù xué wú shù de wán kù zǐ dì
His family is a well-known wealthy household in the area, but his son is a worthless dandy.
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那些纨绔子弟整日游手好闲，不务正业。
nà xiē wán kù zǐ dì zhěng rì yóu shǒu hào xián, bù wù zhèng yè
Those dandies loaf around all day and do not work diligently at anything.