At first, you should get to The Tillers - Exalted,and buy Gin-Ji Knife Set with only 250 gold afterwards.you can exchange Gin-Ji Knife Set from Vendor: Gina Mudclaw in Valley of the Four Winds.
1.You will get Gin-Ji Knife Set.
2.You need to provide your account.
3.Your character needs to be lvl 50.
4.Estimated time: 24hours.