Bai Yao, who had also come to watch the commotion, followed closely behind them. As they moved into the Underworld, Yin Qi surged, filling up the Yin Qi devoured by Black Mountain and then forming an invisible yet powerful barrier.
It kept out all the cultivators whose cultivation had not reached mastery. The Underworld was not a place where just anyone could enter. Entering without sufficient cultivation was simply throwing one's life away.
However, Black Mountain's actions earlier on did not escape the eyes of several cultivators looking for shortcuts. Some planned to take advantage of the weakened Yin Qi to sneak in, but they ended up the same way those with insufficient cultivation did - directly swept away by the wild tide of Yin Qi right at the entrance of the Underworld.
