我并非美人却心如蛇蝎
[wŏ bìng fēi mĕi rén què xīn rú shé xiē]
This username conveys the idea that although I'm not a beautiful person, I have an inner wickedness or ruthlessness, similar to being venomous as a snake. It may reflect a persona of someone who doesn't judge themselves by appearance but acknowledges their own manipulative nature.