Ling Han didn't directly kill them because he had taken into account the fact that he couldn't expose any flaws.
No matter what kind of martial arts competition it was, they would not allow members of their own forces to kill each other — except for some freakish sects.
Thus, if these people had died by his hand, it would definitely lead to an investigation, and there was a Great Emperor standing guard here. How could Ling Han possibly take such a risk?
In that case, he could only borrow the hand of another to do the dirty work.
In this way, though it was a little strange that so many people had died, all of them had indeed died at the hands of the Ignited Stone Beast. As long as the Ignited Stone Beast was killed, there would really be no one left to bear witness.
The Ignited Stone Beast was also very confused. Why did they all take the initiative to charge under its claws, scrambling to be smacked to death by it?
Could it be that its strength had become stronger again?