青春的我们别乖也别坏以后的我们不离也不弃
[qīng chūn de wŏ men bié guāi yĕ bié huài yĭ hòu de wŏ men bù lí yĕ bù qì]
'Youth is for being neither too well-behaved nor rebellious, and no matter what, our bond will never be broken in the future.' It conveys a youthful pledge of loyalty and solidarity among friends during the years of youth.