时光是记忆的橡皮擦回忆是痛苦是根和茎u
[shí guāng shì jì yì de xiàng pí cā huí yì shì tòng kŭ shì gēn hé jīng u]
In this nickname, the user expresses the concept that time ('时光') can erase memories ('记忆'), likening the erasure of memory to an eraser. Recollections bring pain and suffering, which are rooted deeply like roots and stems. It reflects a view of life where time washes away past events, leaving painful recollections behind. There is also an added informal 'u', likely from internet slang, adding personal flair.