True Spirit Sect.
Its history is even older than the Four Heavenly Sects, and the Dao Pioneer [Spirit Ancestor] once came infinitely close to the Great Power Realm, but in the end mysteriously vanished into the dust of history.
Some say the True Spirit Sect offended the Divine Court and was wiped out overnight by a Divine; others say their path of cultivation was flawed, and everyone turned into mutant beasts.
As for the reason, opinions vary.
The answer is buried in the river of time.
After hearing his Senior Brother finish recounting the history of the True Spirit Sect, Lu Chenzhou fell into thought. He felt that Elephant Form Dao and the True Spirit Sect were still different, so there was no need to doubt Elephant Form because of this.
Elephant Form Dao: Elephant Tiger, Elephant Eagle, Elephant Dragon, elephant to all things under heaven, but what never changes through a myriad of forms is... the Elephant Human!
This is where it differs from the True Spirit Sect.