Holy Wu feature will be unlocked once player reached Level 72 (after clearing Prime Minister Mansion (6) Stage).
Praying to Holy Wu will reward players with Fame points and Blessings (Blessing increase experience received when doing raids or clearing stages), depending on what fruit you offers to Holy Wu when praying.
Offering Normal Fruit will cost 100 Art points, and the rewards are 10 Fame points and 120 Blessings.
Offering King Fruit will cost 30 Gold, and the rewards are 100 Fame points and 240 Blessings.
Offering Heaven Fruit will cost 90 Gold, and the rewards are 1000 Fame points and 720 Blessings.