This gave him a massive headache.
Without the Super Eternal Ancient Transformation, he couldn't handle even the most ordinary Fifth Tribulations realm experts.
After pondering for a long time, he finally figured it out.
The reason he couldn't unleash it was because he was no longer the Universe Master.
He had known this for a long time.
He just wasn't clear about the reason behind it.
Now, after trying it once, he completely understood his current situation.
As the Emperor, he was like a fruit fallen from a tree.
And the master of the universe was like a fruit growing on the tree.
The latter had roots.
Using the Super Eternal Ancient Transformation relied on the foundation of the Origin Source Universe.
The former, however, had no such support.
After understanding the reason, he began to look for a solution.
In the end, he managed to figure it out.