The reason is simple, others have no choice, but he has choices.
Two rings, three tokens, mean that there is no place in the Rashamon Sea that Ji Yuan cannot go, even the core area... Even peak Core Formation Cultivators may not be able to break in, but he can.
The second reason is safety.
Although the Bone Nightmare Old Demon boasts extravagantly, Ji Yuan still believes that becoming a Yin Ghost Sect disciple is preferable.
In essence.
The secret realm has a master, the suspected array spirit's Ghost Envoy is still alive, so by then Yin Ghost Sect disciples become part of the family, especially when he is verified as a Yin Ghost Sect disciple.
In a way, this Yin Ghost Sect disciple can be considered part of the master's household.
Whereas the Loose Cultivators... are intruders!
