傲娇似你
[ào jiāo sì nĭ]
It means 'Tsundere-like as you' (the term comes from the Japanese word 'tsun', referring to somebody first being aloof or shy around people they have interest in, and later becoming warmer as they become closer). In Chinese web communities, such a username represents someone possibly identifying as a tsundere character, or loving/relating to them. The user may be a fan of anime characters with these traits or wishes to portray oneself this way.