Nián / qīng / shí / tā / xǐ / huan / hé / péng / you / guǐ / hùn / hòu / lái / cái / yì / shí / dào / shí / jiān / hěn / bǎo / guì

年轻时他喜欢和朋友鬼混，后来才意识到时间很宝贵。

When he was young, he liked fooling around with friends, but later realized that time was precious.