Although he didn't have much understanding of the Supreme True Buddha, in his view, the Supreme True Buddha and the powers under it are undoubtedly two distinct concepts.
Setting up the Immortal Pass demonstrates a realm undoubtedly at the immortal level.
Existences at this level may linger for a while, but eventually, it is impossible for them to remain in the Third Realm Sea indefinitely.
Just as cultivators generally do not stay in the mortal world, because the higher a cultivator's realm, the more they need the environment's support.
Therefore, after so many years, this Supreme True Buddha may have already left long ago.
So, this power of the Supreme True Buddha is most likely a force with Tribulation Transcendent Cultivators or perhaps even Mahāyāna Cultivators.
His current cultivation base, although still somewhat reluctant to face Tribulation Transcendent Cultivators, gives him some ability to protect himself.
