Just as Lu Yuan had speculated, the so-called Heavenly Devil Palace was actually a loose organization.
The reason why they were able to gather together was that the Heavenly Devil Palace possessed a unique inheritance... Heavenly Devil Possession.
The so-called Heavenly Devil was actually a general term for a special life form.
In essence, these Heavenly Devils were the marks of experts left behind from ancient times.
For some unknown reason, apart from retaining their original power, these marks had completely lost their will.
Whether or not one could inherit a Heavenly Devil's Origin Mark was a sign of whether one was qualified to join the Heavenly Devil Palace.
It was not easy to achieve this.
This was because, in a sense, the Heavenly Devil was a power that was outside of the way of the heavens.
For a person without great luck, it was impossible to nurture them.