Yum Cha Sin posts Neighborhood Wishes written down by residents:

• Neighborhood Wishes include Occurrence Commissions and Order Commissions.
  
• Complete Event Commissions and Order Commissions to obtain Wishletters required to level up the temple, as well as Cloud Crests, Omnicoins, and other important items.

After Suibian Temple reaches Lv. 20, Regular Procurement at Yum Cha Sin is unlocked.

Regular Procurement contains periodically refreshed Order Commissions. Completing Order Commissions in Regular Procurement will earn you Omnicoins needed to redeem items at Devon Pawnshop.

There is a limit to the amount of Omnicoins that can be earned within the same period. The limit resets every 7 days.