青春荒唐少年轻狂
[qīng chūn huāng táng shăo nián qīng kuáng]
It refers to reckless and crazy youth. Young people, in their formative years of exploration and growth, sometimes indulge in whimsical, unreasonable behavior due to a mixture of youthful fervor, immaturity, impulsiveness, and the excitement of experiencing new things without fully considering consequences. This captures the essence of the carefree, impetuous actions and mindset associated with young adulthood.