It was said to have nine levels in total, corresponding to the ultimate number of Heaven and Earth. In ancient times, those living within were not merely Devil Race ancestors, but also yakshas and asuras from the Netherworld, as well as certain unusual members of the Demon Race.
But that had all been a very long time ago. At least when Qin Wang descended, he saw no trace whatsoever of any living creature.
The first four levels of the underground palace had long since been buried beneath yellow sand. The remaining five levels were fairly well preserved, but they were filled with boundless Netherworld aura.
"Master, the Netherworld aura here is exceptionally dense. If we go any farther down, we will likely enter the Netherworld. Such a place is easy to enter but hard to leave; one can easily become lost within it and end up in another world. By then, returning to the Demon Race Plane will probably waste quite a bit of time."
Qin Wang stopped at a place where the Netherworld aura was especially dense and spoke to Fang Yantian, who resided within his Niwan Palace.
It was not that this Netherworld aura could harm Qin Wang. Rather, the Myriad Worlds were all connected to the Netherworld Court. If great cultivators used the proper method to enter the Netherworld Court through Ghost Gate Pass, they would basically not lose their way.
But if one forcibly entered Ghost Gate Pass from a place like this, that was another matter altogether. The Netherworld was simply too vast. Unless one was a Great Luo Realm expert capable of piercing the Netherworld with a single thought, it would be difficult to guarantee a return by the original route.
This involved numerous Heavenly Dao Rules, as well as certain grand formations of