well jump hack for perfect world is pretty easy
1) open up any memory scanner (i'm not sure if international server requires bypass or not but thai server doesn't)
2) open up pw and attach the scanner with the game
3) press spacebar to jump during air-time pause the game(you could use the hotkeys to pause the game in ce) then scan for 4 bytes,exact value, value = 1
4) unpause the game wait until your character falls back to ground then scan for 0
5) repeat 3-4 until you get few addresses
6) freeze to 1
(if you want to eliminate wrong addresses faster you could do a double jump then scan for 2)
Sanook666 TGH