If he had just tested the rules of gold, fire, or thunder, he might have really been in mortal danger.
"With my current strength, I cannot continue to advance," Ye Feng said, his expression somber.
Because if he ventured deeper, not only would the power of these rules become more terrifying, but also their quantity would become very dense, too much for him to withstand.
If he still wanted to move forward, there was only one way, which was to break through to the Seventh Order.
Once he truly mastered the Rule Power, his strength would undergo a qualitative change.
If it were anywhere else, for Ye Feng to break through and become a Seventh Order Strongman would be impossible.
Because he would be suppressed by the Power of Heaven and Earth.
But inside the Universe Boundary Wall, it was different.
The place he was in had not even the slightest trace of the Power of Heaven and Earth.
So, here he could break through without any obstruction.