AK47持枪悍匪
[ak47 chí qiāng hàn fĕi]
This internet username 'AK47持枪悍匪' roughly translates as 'Bandit with AK47'. In a cultural background that does not glorify gun violence, this kind of nickname may carry the rebellious or anti-traditional connotation. Also it could symbolically imply being fearless and unconventional.