抹不掉一种轻狂抹不掉一种自傲
[mŏ bù diào yī zhŏng qīng kuáng mŏ bù diào yī zhŏng zì ào]
Conveys a dual sentiment: the indelibility of youthful indiscretion (轻狂 - rash behavior, frivolousness) alongside pride. The individual admits to carrying certain behaviors or attitudes they cannot change or wash away. There's a tone of acceptance or maybe defiance towards this unerasable side of oneself.