What followed would be a war of attrition. The Heavenly Evil God sought out lower planes to Devour, only for Lan Hong to destroy them, leaving him able to absorb nothing but scraps.
After this tug-of-war repeated three times and three lower planes were destroyed, the Heavenly Evil God realized that Lan Hong had a means of tracking him.
However, after investigating himself, he found nothing unusual. That was because the trace Lan Hong had left behind was disguised as demonic energy, allowing it to evade the Heavenly Evil God's detection.
Since he could not avoid Lan Hong's surveillance, the Heavenly Evil God temporarily abandoned his plan to Devour lower planes.
Just as Lan Hong thought he could finally breathe a sigh of relief, events took another turn.
The Outer Realm Demons launched assaults on several mid-tier lower planes simultaneously.
Clearly, these were also food sources chosen by the Heavenly Evil God, and these mid-tier lower planes had not yet been occupied by the Outer Realm Demons.
Lan Hong could never destroy these mid-tier lower planes as well.
If he could not absorb the power of the planes, then he could use the living beings of the lower planes as blood sacrifices instead. The result was the same.
The more slaughter the Outer Realm Demons caused, the faster the Heavenly Evil God recovered.
Naturally, Lan Hong could not stand by and watch the lower planes be massacred by the Outer Realm Demons. Though spreading their forces was dangerous now, they had no choice.
The major powers of the Great Thousand World immediately organized personnel to support the lower planes.
Although the Great Thousand World's response was swift enough, those mid-tier lower planes still suffered immense losses.
There were simply too many lower planes under the Great Thousand World to defend