天真岁月我不忍欺青春荒唐我不负你
[tiān zhēn suì yuè wŏ bù rĕn qī qīng chūn huāng táng wŏ bù fù nĭ]
'Innocent days, I can’t bear to deceive; Reckless youth, I will not betray you.' This username speaks to a pledge made amidst changing times. It implies holding onto innocence without deceit despite recklessness brought by young age and expresses a vow to remain faithful to someone/something.