Elemental Symbols

Storyline:
Can you find 5 elemental symbols for me? I really need these precious symbols to protect our city. Please help me!

Recommended Level:
Level 50 or above

NPCs:
* LiYan in TwinCity (440,332)

Items Required:
WindSymbol, FireSymbol, WaterSymbol, EarthSymbol, DarknessSymbol.

Rewards:
Randomly Expballs, Some money, Demon Box, ExpPotion, Meteors, Garment, Metscroll

Walkthrough:

1. Pay a visit to Tangsu, and accept the quest.
2. Buy a PickAxe and go to the mining map to mining.
3. You need to give a total of 5 symbols to tangsu for take a reward.