After Dean Xu Feibai and others opened the forbidden area, they came directly to the central area of the forbidden area. In the central area, there was a suspended crystal-like water droplet emitting soft light. It was only the size of a fist and was covered with tens of thousands of runes that were invisible to the naked eye.
"This is the cave that can change the speed of time. Even though it looks only the size of a fist from the outside, it is a different world inside. It can be compared to a small world."
Xu Feibai simply said to Chen Lei and others.
Chen Lei and the others naturally understood this point. Space formations and the concept of absorbing the void into a mustard seed are something that even the current Martial Emperor can do, let alone the ancient immortals.
"Get ready. Now we will work together to open the cave and send you in."
Dean Xu Feibai gave instructions to Chen Lei and others.
After hearing President Xu's instructions, Chen Lei and the other five immortal seedlings relaxed their minds and concentrated their attention.
Dean Xu Feibai and several elders worked together to cast a series of seals that fell onto the teardrop-shaped cave suspended in the air.
In an instant, the cave underwent a strange change. A soft light swept across the bodies of Chen Lei and his companions. Chen Lei and his companions instantly disappeared from the spot and entered the cave.
Chen Lei and the other four only felt a flash of white light passing by, and when they opened their eyes again, they were already inside the cave.
Before Chen Lei and the other five people came in, they were reminded that after entering the cave, they should not rush around, but stay where they are and comprehend the skills they have practiced. After they have mastered the skills, they can go outside and look for some opportunities.
Chen Lei and a few others looked around and found several quiet rooms around, which were obviously places for practicing.
Chen Lei and his companions each chose a quiet room, then closed the room and began to meditate and practice.
Inside each quiet room, there are treasures for calculating time, as well as some fairy puppets for testing the power of martial arts. It can be said that all the items needed for cultivation are included, and it is very complete.
Chen Lei sat cross-legged on a cushion in the quiet room and began to quietly comprehend various skills.
Chen Lei had many adventures and gained a lot during this period, but he was not able to calm down and reflect for a while, because there were just too many things happening one after another.
However, practicing in this cave that can change the flow of time can be said to have given Chen Lei the best opportunity to settle down and transform.
Chen Lei quickly entered a state of meditation, a state of oblivion of both himself and the world. It was mysterious and profound. In this state, the various skills in his mind became more and more clear and his comprehension became deeper and deeper. Gradually, they seemed to be integrated into one and tended to be perfect.
In this state, Chen Lei's strength was increasing rapidly at a lightning speed. When Chen Lei woke up from his retreat, he had broken through again and reached the peak of the ninth level of the Transformation Realm.
Chen Lei was not satisfied at this state. After taking countless pills, he waved his hand and took out all the top-grade Dragon Qi Yuan Crystal Stones in his storage rings, piled them up in the quiet room, and then went into seclusion again.
Time passed day by day. Every time Chen Lei woke up, he would take some rare treasures and then immediately go into seclusion. In this way, ten years passed in a blink of an eye.