Absolute power!
"Brother Ye, don't think about it too much. This power of the void is extremely bizarre. Even the Immortal Lords cannot control it. If it could be utilized—even just a sliver of it—it could instantly slay an Immortal Lord. Yet, in all these years, no one has ever encountered it. Some have thought about it, of course, but the outcome is predictable. They simply could not withstand the power of the void entering their bodies."
Gu Shan explained.
Chapter 919