This was the soul cultivator. When his Divine Sense Sea was attacked by a ghostly spike, and the First Nil Bridge was breached, Ning Cheng instantly knew the reason. It was the soul cultivator that Ba Meng had mentioned. He had previously entered the Soul Bridge and hadn't seen that soul cultivator, presuming that the soul cultivator wouldn't appear on this side of the Soul Bridge. Unexpectedly, this soul cultivator possessed such high intelligence, knowing to hide and launch a surprise attack.
Indeed, just as the Wuji Thunder City in Ning Cheng's Divine Sense Sea managed to fend off the ghostly spike, a shadow pounced toward Ning Cheng.
Without any spells or supernatural powers, just the act of pouncing toward Ning Cheng almost suffocated him. It wasn't the oppressive aura that was formidable, but rather the pressure from the rules that this shadow carried. Ning Cheng was immensely shaken; the soul cultivator's use of the Netherworld's rules appalled him.