Within the soul clouds, Luo Zheng remained immersed in confusion.
At this moment, even Primal Celestial Venerable began to feel puzzled.
In fact, Primal Celestial Venerable had indeed planned to help Luo Zheng pass through Soul City.
Moreover, he had not only intended to help Luo Zheng pass through Soul City—he had also wanted to help Luo Zheng obtain the Nine Saint Soul Imprints!
Even though more than a thousand Chaos Eras had passed, Primal Celestial Venerable still clearly remembered that when he obtained the seven Saint Soul Imprints, he had already faintly glimpsed the top of the pillar of light. Vaguely, there seemed to be something else there as well.
Primal Celestial Venerable had no idea what that thing was, but he guessed that it was probably related to the original "Instant Civilization."
Any news concerning the Instant Civilization could arouse Primal Celestial Venerable's immense interest.
But how difficult was it to obtain the Nine Saint Soul Imprints?
Throughout all these Divine Eras, the highest record had been only eight Saint Soul Imprints!
Still, Primal Celestial Venerable had thought that when Luo Zheng entered the soul clouds for the first time, he would first let Luo Zheng go through a period of acclimatization. After Luo Zheng came out, he would then pass on his experience.
Yet after Luo Zheng entered the soul clouds, he simply remained motionless. Even Primal Celestial Venerable grew puzzled.
"Luo Zheng, what's wrong?" Primal Celestial Venerable asked.
"These things in the soul clouds seem to have no effect on me. I don't seem to be able to drive the Soul Pillar upward either," Luo Zheng said.
Primal Celestial Venerable's pupils narrowed slightly. "Impossible..."
Achieving the Colorless Thought Body was a process of repeatedly replacing the Yang Soul.
"Colorless" referred to the material world. A person's