Zhang Ruochen stood about 1,000 miles above the Furnace of Heaven and Earth. Even at this position, the temperature of the divine fire was comparable to the Mortal-level Divine Purification Flame.
Creatures below the Demi-Saint level would be burned to death in an instant if they stood at his position.
Zhang Ruochen released a spiritual power to sense the temperature change from the Furnace of Heaven and Earth.
Soon, Zhang Ruochen divided the temperature of the Furnace of Heaven and Earth into five levels.
The temperature and residual fire from 300 to 1,000 miles away from the Furnace of Heaven and Earth were comparable to the Mortal-level Divine Purification Flame
The area within 300 miles of the Furnace of Heaven and Earth was comparable to the Envoy-level Divine Purification Flame