Mu Yu stood silently, surrounded by an unreachable realm. This is not a black realm of substance, but an invisible realm of power and majesty, which seems to swallow up all light and hope, leaving only absolute darkness and loneliness.

Suddenly, a bolt of thunder burst out from the depths of darkness, tearing through the silent void and blasting towards the proud lion demon beast. This is not an ordinary thunderbolt, but a part of Mu Yu's black thunder realm, which represents Mu Yu's strength and determination.

The lion demon beast had a majestic body, hair like gold, and a glint of challenge in its eyes. It spread its massive claws and roared at the thunder. However, the thunder seemed to be unrestrained and slashed straight at the demon beast.

At that moment, in the interweaving of darkness and thunder, a powerful energy burst out. Mu Yu's black thunder realm condensed into a dazzling flash in an instant, cutting off the demon beast's roar, smashing its resistance, and extinguishing its flame of life in an instant.

Then, everything returned to calm. Mu Yu stood there, his eyes deep and cold. His black thunder realm had vanished, as if it had never appeared. Only the fallen lion demon beast proved his strength and majesty.

Mu Yu slowly retracted his domain. His figure appeared next to the Lion Demon Beast's Inner Dan, a powerful Inner Dan that shimmered with dark golden light, containing wild power and life essence.

Mu Yu's fingers lightly touched Neidan, and a fiery feeling came from his fingertips, which was the power that the demon beast left in Neidan. His heart moved slightly, and a trace of spiritual power probed into the inner dan, and began to guide and extract the power from it.

In front of Mu Yu's spiritual power, Neidan was like a plucked note, and began to vibrate. The dull golden sheen danced in the sunlight, as if it were a lit flame. It was a wild force, a primal life force.

Mu Yu's palm opened slightly, and Neidan slowly rose in his hand. Then, he began to compress and refine this power. His movements are fluid, and every movement is just right and appropriate. There was an indescribable light in his eyes, a love of strength, a reverence for life.

As the refining deepened, the dark golden Inner Dan gradually became brighter, like a flame that had been brightened. Under the guidance of Mu Yu, the power inside began to transform in the direction of the feudal level demon beast. It's a kind of sublimation, a kind of transcendence. The power of the feudal level demon beast has surpassed the scope of ordinary demon beasts, and it has a power of domination and suppression.

When Nedan's light turned as white as jade, Mu Yu knew that he had successfully refined this power. His heart was slightly relieved, and then he held his hands tightly again. The Inner Dan shattered in Mu Yu's hand, and the power in it began to seep into his body.

It's a whole new power, a much greater power. The value of the feudal beast Neidan is immeasurable.

At this time, Mu Yu came to Tiansheng Spring, which is a clear pond hidden deep in the belly of the mountain, the water is extremely pure, and it is full of life qi. The sunlight shines through the water, refracting golden beams of light, as if there are countless elves jumping in it.

Mu Yu stood by the pool, only feeling relaxed and happy. He had just broken through the realm of habitat, and the internal qi in his body was more abundant, but he also needed more energy to further consolidate and improve his strength. And this natural spring is exactly the treasure pool he needs at this time.

He slowly took off his shoes and stepped into the pool. Suddenly, a warm feeling came from the soles of his feet, as if there were countless vitality nourishing his body. He couldn't help but take a deep breath, only to feel a lot of strength and vitality in his chest.

Mu Yu slowly closed his eyes, feeling the water full of life from the Heavenly Spring flowing around his body. It was as if he could hear the sound of the spring hitting the stones, and he could feel the life force surging in his body.

Time passed unconsciously, and Mu Yu's body began to absorb the life qi of the Heavenly Spring. His muscles became tighter in the warm stream of water, and his skin became smoother under the nourishment of the breath of life.

Gradually, Mu Yu felt that his body began to change under the nourishment of the natural spring. He felt his inner qi more abundant and his body more resilient. He knew that all of this was nourished by the flow of life from the Innate Spring.

Gradually, Mu Yu's body began to leave the water and slowly rose into the air. His body glittered in the sunlight, as if he had become a god.

Mu Yu felt that his body was full of strength and vitality, and he knew that this was the effect of the life qi of the Innate Spring. He felt that his body had reached a whole new level, and he knew that this was the moment for him to break through the realm of habitat.

At that moment, Mu Yu felt as if his body had become a huge melting pot, and all the life qi was constantly converging and merging into his body. His internal qi began to surge, constantly hitting every corner of his body.

Gradually, Mu Yu felt that his body began to change. His muscles became tighter and his skin smoother. His body seemed to have turned into a huge melting pot, constantly absorbing the life qi of the Innate Spring.

Mu Yu, who had just broken through the realm of habitat, was almost consumed with energy in his body, and he needed to replenish his energy too much. And the treasure pool full of life qi of the Heavenly Spring was exactly what he needed at this time.

Mu Yu was excited and jumped into the pool without hesitation. Suddenly, he felt a powerful energy coming from the pool water, penetrating through his skin and into his body. This energy was unlike any other energy he had absorbed before, it was much purer and more full of life force.

Gradually, Mu Yu felt that his body began to change. His body seemed to have turned into a huge melting pot, and all the life qi was constantly converging and merging into his body. His internal qi began to surge, constantly hitting every corner of his body.

Mu Yu knew that this was the moment for him to break through the realm of habitat, and he knew that this was an opportunity for him to grow. He struggled to control his internal qi, constantly absorbing the life qi of the Innate Spring.

Gradually, Mu Yu felt that his body began to change. His body seemed to have turned into a huge melting pot, and all the life qi was constantly converging and merging into his body. His internal qi began to surge, constantly hitting every corner of his body.

Gradually, Mu Yu felt that his body began to change. His body seemed to have turned into a huge melting pot, and all the life qi was constantly converging and merging into his body. His internal qi began to surge, constantly hitting every corner of his body.