It was not only the Yin Burial Coffin.
In order to cultivate the Infinite Dao Soul, Jiang Li spent a million years.
This caused a huge change in the eighteenth level of hell.
Just the spiritual qi and immortal qi that seeped out of Jiang Li's body caused the concentration of spiritual qi in this hell to increase by more than 30 times.
In the outside world, it would be a proper Yin-Yang Paradise, a paradise for raising corpses.
Any corpse would become a bronze-armored corpse in less than three days.
In another three months, it could mass-produce zombie kings.
He seemed to have gone overboard this time.
He did not know where this energy that he created out of thin air came from. It had not been sucked dry by him for a million years.
He temporarily put these questions aside.
After confirming that the coffin would not easily withstand the explosion, Jiang Li heaved a sigh of relief.