Right now, Qin Wentian was already a peak-stage immortal emperor but his opponent was an empyrean that had comprehended the source origin of his sword laws. He had already transcended the emperor realm and achieved a qualitative transformation. No matter how strong Qin Wentian's combat prowess was, it was still impossible. Upon fighting with an empyrean, Qin Wentian could clearly sense how terrifying characters at this level were.
In addition, this man before him was someone who had merely gained comprehension over the source origin of a single law. How terrifying would someone become if he manages to gain comprehension over the source origins of all his laws? The emperor energy in their body would be completely transformed into Empyrean might that would suppress him. Even if his astral souls were monstrous, it would still be impossible to resist against an expert at that level.