When Hanging out in Suzhou you may find yourself seeing a Random Encounter that gives you this.
Just as the Enchanting Incense says, go to (905, 141), you'll find two dead bodies.
Click on Mr. Murong and then right click your Enchanting Incense and a box will appear on the ground.
Loot the box!
And there you have it! You're done and have your prize!