情话不及久伴青春不留遗憾
[qíng huà bù jí jiŭ bàn qīng chūn bù liú yí hàn]
It means 'Endearing words fall short of long-lasting companionship; youth stays with no regrets'. Conveys that sincere relationships and experiences in our youth age are priceless treasures which can't simply be described by words.