As for why "He" did not use it immediately, it was because this supreme will realm inheritance was too high-level. Therefore, even if "He" only absorbed the inheritance inside, there was a certain risk.
If "He" was not careful, "He" might be 'contaminated' by the inheritance content inside and lose "His" will, becoming a will substitute of the inheritor.
However, if Zhou Zhou had a Grade One Supreme Sacred Body, "He" would not be afraid of these risks. "He" would be able to absorb the will inheritance of the Heavenly Furnace Lord without worry.
Then, "He" sensed the lower limit of the human race's potential.
Then, "He" smiled.
Low-Tier Deity Level Intermediate Grade!
Now, with the help of 501 new Master God-Tiers of the human race, the potential of the Blazing Sun God Race had shockingly advanced from the Low-Tier Deity Level Elementary Grade to the Low-Tier Deity Level Intermediate Grade.