This matter was none other than the Primordial Spirit.
Whether it was Saints or the various powers of the Three Realms, the Primordial Spirit seemed to know the root of them all. Even Lord Lao Zi of the Great Monad developing self-awareness, which was a secret of immense proportions, did not escape the Primordial Spirit's Dharma Eye.
Ye Xuan's thoughts were intricately fearful, and he felt the increasing mysteriousness and unpredictability of the Primordial Spirit.
Ye Xuan knew that the Primordial Spirit was by no means a Saint because, during the year he chased the Primordial Spirit, the latter had said that if it weren't for the fear of the Saints knowing his true identity, he would have certainly manifested his true form to kill Ye Xuan.
From this, it could also be seen that the Primordial Spirit was not one of the six Saints within Heaven and Earth; he must be a Quasi-Saint without a doubt.
