Breaking that bubble was impossible with their strength. Even a Battle Overlord practitioner failed to get their hands on the treasures that was dangling right above their sight.
That said, it was not like getting those treasures was impossible. To get the treasure, one needed to get the items out of the energy bubble. And to do that, one needed a totem.
Objects that lay quietly on the few pillars around the hall. It was the only object that could penetrate through the energy bubble and reach the treasure inside. However, these totems were limited in numbers and the number of people who wanted to obtain them were far too many to count.
Therefore, a battle was inevitable.
The chaotic fight that was going on all around the hall was not due to some kind of mental interference or due to the practitioners losing their minds. It was all due to the allure of the treasure and the totems.