Su Hao had thought that a round of saturated bombardment like this would at least leave Dark Regirock heavily damaged, forcing it to stop moving and enter a temporary "shutdown" state to repair itself.
After all, Regirock was a Pokémon capable of repairing bodily damage with new rocks.
As for directly taking Dark Regirock out... Su Hao had never even considered it.
No matter how absurd Milotic's damage output was, it could not possibly one-shot Dark Regirock.
That remained true even if Dark Regirock possessed only power and no Authority.
If Milotic could really do that, it would not have chosen to remain at the late Champion Level to accumulate more foundations for further advancement.
Once it broke through to Master Level, Milotic could call itself the second strongest below Class One Legendary without any issue.
—Though the strongest was Diancie, that exceptional individual capable of fighting Zygarde 50% and, with favorable matchups, displaying strength close to the peak of Class One Legendary.
Dark Regirock did indeed stop moving and enter a "crashed" state.
But—
The negative-energy tentacles that had previously swarmed Diancie's radiant aura, intent only on wearing down its strength, paused briefly before choosing to return to Dark Regirock's body like fledgling swallows returning to their nest.
As the negative energy entered it, Dark Regirock's damaged body visibly repaired itself at an astonishing speed, while the aura it gave off grew increasingly ominous.
Negative energy could repair its body and injuries too!
In that instant,
Su Hao understood how Dark Regirock had been corrupted and controlled by Star Creation, and he also understood the deeper reason they had sent Dark Regirock to block his path.
As long as there was an endless supply of negative energy, Dark Regirock could repair itself endlessly and greatly delay Su Hao's advance!