不可一世旳男r3n玩世不恭旳女r3n
[bù kĕ yī shì dì nán r3n wán shì bù gōng dì nǚ r3n]
This username translates to 'A arrogant man and a cynical woman' - referring to a pair where one side displays arrogance or domineering character traits while the other side adopts a world-weary or cynicism, possibly towards societal norms or general attitudes. Note the unconventional spelling which adds some internet slang style