Chen Lei endured the discomfort as if his body and mind were being split apart, his eyes glowed with golden light as he looked at the set of Qi refining techniques and sword techniques on the stone wall.
The sword light emitted by the Qi Refining Technique and the Sword Technique almost blinded Chen Lei's eyes, but Chen Lei remained unmoved and still stood firmly in the same place, carefully comprehending the Qi Refining Technique and the Sword Technique.
Finally, Chen Lei finally memorized the entire Qi-refining technique and sword techniques in his mind.
After Chen Lei memorized all the Qi-refining techniques and sword techniques in his mind, the Qi-refining techniques and sword techniques on the stone wall suddenly turned into stone powder, fell down and disappeared completely.
A figure appeared out of nowhere in front of Chen Lei. He was tall, with a stern face and sharp eyes, like a divine sword.
"Haha, good. You are able to block the sword energy and are indeed qualified to inherit my legacy. I am very satisfied." The figure looked at Chen Lei and said with a smile.
"Excuse me, what is your name, senior?" Chen Lei asked hurriedly when he saw the figure.
"My name is Dao Xiangtian, and people call me Dao Zun. This is just my obsession. Boy, you are very good. You have inherited my legacy. I am very satisfied. This obsession should also dissipate."
After saying this, Dao Zun didn't wait for Chen Lei to speak, his figure gradually faded away, and finally turned into light rain and dissipated in the air.
"Sword Master!"
Chen Lei kept repeating the name, but he couldn't remember in which ancient book he had seen records about Dao Zun.
Finally, Chen Lei put this matter aside and began to practice the Kaitian Qi Refining Technique.
Chen Lei practiced in this cave and soon achieved some success.
Chen Lei discovered that when he was practicing the Kaitian Qi Refining Technique, there were constantly wisps of extremely pure sword energy coming from all directions and entering his body. Finally, it turned into extremely pure Dan Yuan power, which was extremely sharp.
While practicing the Kaitian Qi Refining Technique, his own body actually improved again. Originally, his body had been tempered to the extreme, and it was very difficult to go any further. However, under the Kaitian Qi Refining Technique, it actually improved significantly again. The strength of his body increased by more than 50%. This was definitely an amazing progress.
It only took Chen Lei half a month in the cave to practice the Kaitian Qi Refining Technique to a small level of success.
In fact, if Chen Lei were in other places, it would take at least several years or even decades for him to practice this Kaitian Qi Refining Technique to the level of minor success.
However, the situation inside the Mudao Gorge is different. There is a sword energy inside the Mudao Gorge left by the Sword Master. This sword energy is the kind of energy that split the mountains and left its mark in the Mudao Gorge.
Ordinary strong men cannot feel this kind of aura at all. After entering Mudao Gorge, they only feel a little oppressive, but they don’t understand where this oppression comes from.
And now, all the sword energy contained in Mudao Gorge has been absorbed by Chen Lei, helping him to cultivate the Kaitian Qi Refining Technique.
As Chen Lei expected, after practicing the Kaitian Qi Refining Technique, the Tower of All Things in Chen Lei's body finally added another level and reached the ninth level.
After reaching the ninth floor, Chen Lei had a feeling that this Tower of All Things was almost complete and it was impossible to add more floors.