我不姓陈我并不沉稳
[wŏ bù xìng chén wŏ bìng bù chén wĕn]
Translates to 'My last name isn't Chen (which sounds like the word for “steady” in Chinese) and thus, I am not steady'. The individual admits that unlike the implication of the surname, they do not possess a steady or calm character, revealing a bit of self-deprecating humor or honesty about themselves.