The sense of this exploit is in this: when 2 chars are in party the exp is devided beetwen them (50%-50%).This bag will make deviding(70%-70%) or even higher.
1)You need 2 chars(on different acc) and Hlapex for this bag
2)Switch On hlapex
3)Enter to the game witch char 1
4)Second character takes to the party char 1
5)Second player gives trade request to char 1
6)First player shouldn't answer to the trade request but should send the pakcet 2a 01 00 00 00 to the sever from hlapex
7)Char 2 gives party leader to Char 1

Char 2 leaves party and Char 1 is in party with himself and clons
Now go kill mobs and you will recive alot of exp\you will gain your lvls fastly
NOTE:Every trade request from Char 2 - Char 1 takes +1 to his party
Works only on Free C4 Java servers
(c) Russian Coders