This gray spiritual energy had an amazing effect on Chen Lei's physique. Moreover, the immortal and demonic energy that Chen Lei cultivated also turned into this gray spiritual energy.
However, as long as Chen Lei thinks about it, this gray spiritual energy can be transformed into black demonic energy or white spiritual energy. Of course, in essence, it is still this gray spiritual energy.
After several days, Chen Lei's physical condition was completely improved. It could be said that he had undergone a true transformation. Chen Lei's body once again broke the limit.
Now, Chen Lei's physical body would probably have no problem withstanding the attack from a top-grade magic weapon.
At this moment, Chen Lei could feel his true strength.
He believed that with this modified body, it would be no problem for him to defeat a master in the Lesser Saint Realm.
Afterwards, Chen Lei also discovered the magic skills practiced by the ancient demon in this cave.
The magic skill that this ancient demon practiced is called the Heaven-Swallowing Magic Skill, and it is a set with the Heaven-Swallowing Magic Pot.
Of course, the power of the Heaven-Devouring Demon Art itself is absolutely amazing, and is only stronger than the Yellow Springs Demon Art obtained by the Yellow Springs Demon Sect.
However, this Heaven-Devouring Demonic Art is not very useful to Chen Lei.
The Immortal Demon Transformation Technique that Chen Lei practiced was much more advanced than the Heaven-Devouring Demon Technique.
Of course, the Immortal Demon Transformation Technique can absorb the Heaven-Devouring Demon Art, which is also one of the essences of the Immortal Demon Transformation Technique.
After Chen Lei obtained the Heaven-Devouring Demon Art, he was able to enhance the power of the Immortal Demon Transformation Art, which was not completely useless to him.
However, Chen Lei now has no time to practice the Heaven-Devouring Demon Art carefully.
Practicing the Heaven-Swallowing Demon Art is definitely not something that can be accomplished in a short period of time. It will not be too late to comprehend the Heaven-Swallowing Demon Art after he gets out of this ancient demon cave.
Chen Lei walked around the cave again. Inside the cave, there was nothing else except the Heaven-Swallowing Demon Pot, the Heaven-Swallowing Demon Art, and the notebook that recorded his experience in cultivation.
However, Chen Lei was already very satisfied with his gains this time.
Obtaining the Heaven-Swallowing Demon Pot, the Eternal Life Tower, and the Heaven-Swallowing Demon Art, any one of these three items can be called a priceless item.
There was nothing left to be gained in this cave, so Chen Lei left.
The three things Chen Lei obtained in this ancient demon cave can be regarded as top-level treasures. To be honest, Chen Lei can’t use these treasures much now.
In other places in the Ancient Demon Cave, there are still many opportunities and treasures that Chen Lei can use now. Now it will take some time before he leaves the Ancient Demon Cave, so Chen Lei decided to go to other places to search for some treasures, elixirs, etc. that he can use.
Soon, Chen Lei left the cave.
After Chen Lei left the cave, he walked directly out of the restricted light curtain.
The restrictive light curtain of this cave only prevents people from entering but not leaving, so Chen Lei left the cave easily.
After leaving the cave, Chen Lei appeared at the entrance of the mountain top.
At the entrance of the top of the mountain, Gui Li and Bai Ye were waiting for Chen Lei.
After Chen Lei appeared, the first thing he met was Gui Li and Bai Ye.