Chapter 153: Chapter 153: Heaven and Earth to Revive Soon

"This information was something I stumbled upon in an ancient text, but I can assure you there's a 90 percent chance it's accurate," Pei Xuanjing said with utmost seriousness.

Although he did not disclose the information about the Netherworld Book, he still gave an affirmative answer.

Seeing how earnest Pei Xuanjing was, the Taoist Qingxu did not take him lightly and turned his gaze towards Bai Xiaosheng beside him.

Presumably, Bai Xiaosheng, who was known for his omniscience, could provide an answer.

"From the information I have, Pei's words are not false. According to the traditional classification in the Cultivation World, the martial arts first-grade realm is indeed just the pinnacle of the Mortal Realm. Above it is a larger realm called the Spirit Realm.

However, after the Tang Dynasty, this realm disappeared completely from history, meaning that no one has broken through the first-grade martial artist realm since then.