They didn't need to kill Mu Rufeng, just briefly stop him.
As long as they took out Mu Rufeng's spinning top, then Mu Rufeng would naturally be eliminated and die.
However, Mu Rufeng wasn't foolish, he had used Instantaneous Movement to return to his spinning top's side when the abnormality loudly cried out.
A loud "snap!" echoed.
Mu Rufeng made his spinning top whip even faster.
His ability for Instantaneous Movement was ready to use.
After he had killed the abnormality that could briefly lock the space, he could use his Instantaneous Movement.
Yet, Mu Rufeng's Ghost Power was nearly exhausted.
Although his Ghost Power had multiplied due to the cheat "get stronger by killing monsters," it was still only around third-level peak.
He had been fighting several Level 5 Abnormalities, not to mention using the power of Ghost Domain several times, which drained a lot.
Of course, it wasn't much of a problem; he could simply use Little Ying's Ghost Power.
