Greenwood Tree Totem!

"Or it could be that long, long ago people did not understand the truth of the natural mechanisms of the Nine Mountains and Seas, of this entire starry realm. They thought that the Nine Mountains and Seas were the key to developing the body. After feeding upon the Mountains and Seas, they grew stronger, and stronger, and eventually broke through to the next level of life. Their lives fused with that of the Mountains and Seas, and they became Immortals!

"People who viewed matters in such a way eventually came to be the majority. However, there was always a small group who believed that the Nine Mountains and Seas were Heavenly Demons whom they could either seal or approve. Seal them as a path to power, or approve them and become their masters.

"That group of people were... the earliest Demon Sealers!