RatFang

NPC:
Old Man Tang, Maple Forest (779,467)

Monsters:
Level 37 Poisonous Rat and level 42-43 Fire Spirit, in Maple Forest (532,768)

Required item:
A Rat Fang

Reward:
A purple bag or a Brass Heavy Ring of Elite or Super Quality.

Walkthrough:
1. Pay a visit to Old Man Tang who was hurt badly by the poisonous Rat. He is in urgent need of a Rat Fang to antidote the poison.
2. Move northwestwards and across the bridge, slay Poisonous Rats to get the Rat Fangs. They are among the level 42-43 Fire Spirits, and looks like Fire Spirits but is smaller in size.
3. Take the Rat Fang to Old Man Tang and he will reward you a purple bag or a Brass Heavy Ring. As for what you will gain, that depends on your luck.