Chapter 535 Preparation 2

"How strong?" Yang Xuan Nu shook her head, "In the Underworld, the rules of heaven and earth are only a part of the Yin aspect within the Three Realms, and not complete. Even if we reach the pinnacle, which is the strongest Polar Region, it is only equivalent to their Ghost Immortal level. The space of the Underworld, being incomplete, is fragile and vulnerable. Hence, if one wishes to advance further, one can only break through the realm and ascend."

"Ghost Immortal....."

Lin Xin knew of this realm, he had come across this level in many books.

Ghost Immortal is a cultivation realm equivalent to that of Human Immortal and Demon Immortal.

Above that, there are levels like Heavenly Immortal and Golden Immortal.

From this perspective, if the Human Race really has levels such as Heavenly Immortal and Golden Immortal, and if they do not abide by the rules and ascend, it would indeed be very dangerous.