Not all vietnamese players can dupe , otherwise there wouldn't be anyone in hefei market selling stuff like lf medi or other things , besides it's absurd even to think that all the viet players can hack , I mean even if a hack is released with a detailed guide only about 10% of people will be capable to get it to work , more so if you think about that 10% and mix it up with the variables of playing on a VN server and the prospect of all guides to hack to be in VN I would say that about 0.5% of english speakers will be able to hack , so there that means 1 -2 people playing on 9D VN will be able to hack , even if they post the entire guide , they would just get nagged , with questions like "don't work pl0x help" or "i can't get it to work please please please help" , and so stop asking stupid questions like this and please use the search function , and another thing if anyone finds a hack and posts a fully working guide here , it would be stickied (thanks to the allmighty MOD wich I respect) , so pardon my long rant , but I just felt the need to explain how exactly this questioning business works , if you start doing something and can't find a solution you ask for help but at least you should try to do something on your own , not just go around and be like "help help I want to hack".
Cheers .