It has only one demand, the same as the Earth Dragon Demon King's demand, otherwise it would rather die than comply.
Ye Jingcheng pondered for a while and agreed.
Thus, along with the three Demon Kings allied with the Earth Dragon Demon King, twenty-eight Great Demons had entered Ye Jingcheng's Grotto Heaven.
Among them, the Three-eyed Demon King had eleven Great Demons, the Mammoth Demon King had ten, and the Thunder Roc Demon King had seven.
From this, one can see the obvious power gap between the three groups.
At the same time, Ye Jingcheng received two treasures from each of the two Demon Kings; one being the Golden Quenching Essence Fruit from the Mammoth Demon King's Long Elephant Valley.
This fruit can refine a cultivator's physical body, being greatly beneficial to both Ye Jingcheng and Ye Haicheng, and the Mammoth Demon King produced six fruits.
