Yi Yu guesses that it's right. The divine figure that appears under the sea of spirit is indeed the spirit of the soul washing pool.

in the ancient times, there was another name of the soul washing pool, the soul changing pool of all things. All the bodies of all things contain the spirit. One plant, one tree, one mountain and one stone can all derive the spirit. The soul changing pool of all things can extract the spirit of all creatures. It is also a God created by the joint efforts of the nine tripods emperor and the Immortal Emperor.

these two ancient emperors built the animalization pool of...