All of the terrifying breaths from the monsters were the effects of the monstrous aether raging within them, which could be conjured into terrifying attacks. Nevertheless, the monsters were still unable to shake the barrier even when using their breaths.
It was because of that barrier that Lu Xuan could survive being in such a dire state.
The monsters wanted nothing more than to see Lu Xuan ripped to pieces. Even though they found the barrier a long time ago, however, they were unable to do anything to him as long as they were incapable of breaking it.
The monsters would gather at times to try to break that barrier but to no avail.
Nevertheless, very powerful monsters had been guarding the barrier the whole time; they were afraid of Lu Xuan escaping.
It was apparent that news from outside traveled. The Myriad Demon Valley was not only filled with monsters; some demons had developed intellectual capacities.