青春是经不起挥霍的
[qīng chūn shì jīng bù qĭ huī huò de]
Expresses the concept of not being able to afford to waste youth lightly. The implication is a bit of reflection and reminder that youthful energy must be carefully managed because once it's spent it can never be regained. Encourages people especially youngsters to treasure every minute when they're young.