There are 4 Daily Quests in Battle of Immortals
You can get them with Level 65 in Hall of Illusions.
Just go to the Hall of Illusions Teleporter in Atlantic Square.
For one of this Daily Quest you obtain 90000 Exp and 10000 Coins.
So 40000 Coins for this Quests are not bad.
You can find the Teleporter in Atlantic Square "Expedition Union"
Divac´s Treasure Map
You can do the Quest 5x Times.
But everytime you need to kill Monsters atleast 10 or 5 Levels Lower or Higher than yours.
So go to Rainbow Valley.. Its a lot faster.
Faster than Teleporting every Time to Bermuda Islands or Nile River West.