Characters must use Tools to do working tasks:
  1. 1.
    Axe to chop
  2. 2.
    Shovel to explore
  3. 3.
    Pickaxe to mine
  4. 4.
    Rake to harvest
  5. 5.
    Fishing Rod to fish
Tools can be upgraded to higher levels (at the Exchange Shop->Craft->Tools) to unlock tasks with better odds of finding rare items. Precious Stones are required to upgrade tools.
PS: expired tools can be repaired at the Exchange Shop->Craft->Tools.