菇凉你还年轻别把未来作废骚年你还年轻别把青春荒废
[gū liáng nĭ hái nián qīng bié bă wèi lái zuò fèi sāo nián nĭ hái nián qīng bié bă qīng chūn huāng fèi]
It literally translates to 'Girl, you are still young, don't waste your future; boy, you are still young, don’t squander your youth.' It advises youth not to waste their potential but focus on building a better future.