Since he didn't knew the amount of tribulation lightning of the origin world which had infected his red sun for it to change, he opened his mouth slightly and spit out the thunder sun once again with some suspicion.
What gave him a pleasant surprise was that the tribulation thunder's power hadn't injured his body in the slightest. On the contrary, the thunder flux energy possessed by Li Yunmu was completely absorbed by this thunder sun within an instant.
[Congratulations host, because of experiencing a coincidental fusing with another type of natural energy, your Great Sun Tyrant Body Muscle Marrow Secrets have successfully transformed into Great Sun Thunder Tyrant Body Muscle Marrow Secrets.
[Congratulations host, because of a variation produced by unexpectedly absorbing a formidable energy, your Great Sun Thunder Tyrant Body Muscle Marrow Secrets have became a cultivation method of unknown grade. Host thus will be unable to use ability points to upgrade the cultivation and can only rely on himself to increase it.]
The two messages from the system caused Li Yunmu to be both surprised and scared. His mood kept switching between high and low like a roller coaster. What amazed him was that after fusing with the tribulation thunder of the origin world, the red sun which he cultivated had surprisingly been upgraded to a level which even the system cannot determine for the time being.
However, the disappointment was that after attaining an unknown grade, the energy essence like ability points were unable to advance it.
Frankly speaking, now that the Great Sun Thunder Tyrant Muscle Marrow Secrets could no longer accept the energy essence, it would require even higher level energy essence to advance.
At this instant, even Li Yunmu himself didn't know how to describe his feelings. Naturally, he had obtained an enormous fortune, but a hint of discontent still remained in his expression. If the quasi deities of the Earth learned about this, they would probably die because from jealousy.
Who could've thought that the path which quasi deities had been searching using every possible means would be obtained by Li Yunmu because of an accidental fortuitous encounter.
"System, this unknown profound grade cultivation method, am I really unable to use ability points to upgrade it?"
Li Yunmu still wasn't willing to give up.
[Yes, host. Ability points are unable to satisfy its cultivation grade. Only when the system is upgraded to the tenth level will it be able to produce higher level energy essences which could assist in upgrading it.
[As for the level of this profound cultivation method, the system can see one difference between this cultivation method and sage level cultivation methods, and that is the difference of source energy…]
As system kept explaining, Li Yunmu slowly gained a little understanding.
According to the traditional energy system, A grade cultivation methods represented the highest grade cultivation methods for the Fifth Dimension, and S grade represented the Sixth Dimension's Flux Master level cultivation methods, while SS grade represented the Seventh Dimension's sage level cultivation methods. As for SSS grade, it represented the peak supreme sage level cultivation methods which could be accessed by humanity.
By then, Li Yunmu himself only cultivated two SSS supreme sage grade cultivation methods, which were Ghostly Image Substitution and Plant Essence Innate Healing Reversal.
Apart from these two cultivation methods, even Great Sun Tyrant Body Muscle Marrow Secrets didn't reach the supreme sage level.
But the current situation was different, because he had fused with a formidable destructive power like the tribulation thunder of the origin world. The original Great Sun Tyrant Body Muscle Marrow Secrets had been forcibly upgraded to Great Sun Thunder Tyrant Body Muscle Marrow Secrets, which was a profound cultivation method of unknown grade.
As for the difference between the two, that was similar to a difference between heaven and earth, because with source energy of a different level, the cultivation results would be different from traditional cultivation methods.
Li Yunmu faintly sensed that he had barely entered the first level of this upgraded Great Sun Thunder Tyrant Body Muscle Marrow Secrets.
The highest level also wasn't similar to that of the SSS grade cultivation methods which had more than a hundred levels. This one had only twelve layers.
The original foundation of the Great Sun Tyrant Body Muscle Marrow Secrets only formed the first level of this upgraded cultivation method and nothing more.
Because of the tribulation thunder of the origin world, there was an earth-shattering quality change in the cultivation method. If previously the Great Sun Tyrant Body Muscle Marrow Secrets used Great Sun as its focus, Tyrant Body as the secondary, and Muscle Marrow Secrets as tertiary, then now it was all reversed
The Great Sun Thunder Tyrant Body Muscle Marrow Secrets used Muscle Marrow as the primary, thunder as the secondary, and the strength of Tyrant Body formed after marrow cleansing as the foundation to increase the strength of his red sun to a terrifying level.
As long as any smart person carefully thought about this, they would realize that the core function of the Great Sun Thunder Tyrant Body Muscle Marrow Secrets was still to cultivate the red sun as the core. Whether it was muscle marrow cleansing or tribulation thunder or tyrant body, all of them were there to provide assistance to the red sun.
But the change in priorities in other aspects had certainly increased the importance of muscle marrow secrets. The cultivation method used thunder to temper the corporeal body to make sure Tyrant Body became even more terrifying to hold the extremely terrifying red sun.
In simple terms, Li Yunmu's corporeal body was like a container to hold water. The more formidable his body was, the more water it could hold.
"Good god…. This really is too difficult."
After a lot of time, Li Yunmu had finally gotten his hands on a profound cultivation method which could be compared to a supreme sage level cultivation methods, but he still sighed in his heart.
Despite that, he was extremely excited after learning about this profound cultivation method.
The next instant, he tried to comprehend the cultivation path and activated the cultivation method. Instantly, the red sun in his naval released numerous warm currents which then filled his entire body with extremely comfortable sensation.
At the same time, the thunder around his red sun quickly transformed into thunder energy and began to continuously move along the paths connecting his seventy-two flux points.
This thunder energy was the purest and most supreme grindstone. At the outer edge of this thunder energy, the thunder loudly rumbled and slowly began to spread along Li Yunmu's body.
In an instant, he was left completely stunned. When he moved this thunder energy along the circuit connecting his seventy-two flux points, he could clearly sense that whether it was the original flux points or the meridians connecting them, all of them began to expand. He could feel all of it with crystal clearness.