Level requirements:
Between 28 and 39

NPCs:
1. General Chen, Twin City (480,351)
2. Soldier, Maple Forest (259,272)
3. General Wu, Maple Forest (800,471), (728,490), (685,425), (720,375)

Reward:
An unique Broadsword (level 30)

Walkthrough:

1. Find General Chen (480,351) in Twin City, and agree to deliver an official letter to General Wu.
2. General Wu goes to hunting. So find Soldier (259,272) outside the Maple Forest, and he will give you a letter of recommendation.
3. Head for southeastern Maple Forest to find General Wu, and give him the recommendation and official letter. He answers the letter and wants you to take it to General Chen.
4. Give General Chen the letter, and he will reward you a Unique Broad Sword.

Tips:
1.As General Wu is hunting, he always moves around the village in southeastern forest.
2.You can do this quest twice in one day.