(For free.) Ye Feng put all the crystal stones into his bag, but found that Xiao Jia was still not willing to calm down. Following the direction of Xiao Jia's restlessness, in the middle position of this space, there was a basketball-sized green stone, which was very ordinary and could not feel any spiritual fluctuations.

  Ye Feng was overjoyed and took out a treasure sword from the inner world, cutting open a piece of green stone and shedding a layer of stone skin. Inside, it was still green.

  Xiao Jia's emotions became even more turbulent, Ye Feng was certain that there must be a crystal stone inside, and it should be a high-quality one, otherwise Xiao Jia wouldn't have reacted this way.

  Without hesitation, Ye Feng made another sword move and cut the cyan stone in half. It looked like a basketball had been cut in two.

  But there was no crystal stone inside, which made Ye Feng very puzzled. According to reason, there should be crystal stones here. Xiao Jia rushed to one side of the cave, swinging her sharp claws.

  "Little guy, it seems my luck is not as good as yours, you come instead." With Ye Feng's permission, Xiao Jia rushed to the stone that was split in two, grasped it with his claws and then pried it open.

  The strength of Jing Shi Shou Xiao Jia is almost comparable to that of a treasured sword, effortlessly shattering half a piece of bluestone.

  "Ding!" A crystal stone the size of a fingernail fell to the ground, and Xiaoyi picked it up with one hand.

  Ye Feng focused his gaze here, and Xiao Jia's claws grasped a crystal stone that emitted dazzling light.

  What crystal is this!?!

  Ye Feng was confused, he still knew a lot about the crystal stone. Ordinary crystal stones were white in color, while high-quality crystal stones were milky white. On the other hand, pure crystal stones were almost transparent, and high-quality pure crystal stones had no color at all, appearing completely transparent.

  And this piece emits a seven-colored light, no matter from which angle you look at it, this crystal is so dazzling.

  Xiao Jia handed the crystal stone to Ye Feng with a treasured expression, and his eyes emitted an unwilling glow, this situation had never happened before!

  Could it be that the grade of this crystal was even higher than that of a pure crystal? Ye Feng racked his brains to recall what he knew about crystals, and suddenly a legendary existence flashed into his mind.

  Variant Crystal!

  This crystal should be a variant crystal! Ye Feng looked at the crystal in his hand and remembered that there was a kind of crystal called a variant crystal, which was extremely rare. It is said that during the formation process of the crystal, under the coincidence of luck, other substances entered it, were sealed and entered another mysterious power, causing a qualitative change in the quality of the crystal.

  Variation crystals are all with different colors, some are red, some are black, and some are purple. In short, they correspond to one of the seven-color light, with red being the most noble, and also the highest grade of red crystal.

  Those with two colors are called high-quality variant crystal stones.

  This sparkling seven-colored light, Ye Feng had never heard of it before, occupying all seven colors, could this be an extreme variant crystal?

  Whether it's an extreme variation of crystal stone or not, since Xiao Jia attaches so much importance to it, its value is far higher than that of high-quality pure crystal stone. Ye Feng played with it for a while and tried to activate the energy in the crystal stone by mobilizing the spiritual energy within his body.

  "Boom!" A vigorous aura burst out of the crystal stone and shot towards Ye Feng.

  "Cough!" Ye Feng hastily threw away the crystal in his hand, this energy was too strong, to the point where Ye Feng couldn't bear it at all, almost destroying his dantian. Even though Ye Feng had thrown away the crystal in the first moment, a residual wave still damaged the meridians inside his body. Unable to hold back, a mouthful of fresh blood spurted out.

  Sitting there for a long time, regulating his disordered breathing, Ye Feng picked up the crystal stone again and held it in his palm to examine it carefully, but he didn't dare to act rashly again.

  Such power is not something he can handle now, it's just too powerful.

  This is absolutely a variant crystal stone and should be a very high-grade variant crystal stone. Ye Feng felt that it was not an exaggeration to place it in the category of top-quality crystal stones.

  This is truly a blessing in disguise, just this one piece of top-grade variant crystal stone alone, without the crystal stones that were snatched away, even being pursued and killed to get here, it's absolutely worth it. The value of the top-grade variant crystal stone far exceeds the crystal stones obtained by that cultivator by tens of times.

  Carefully bring this top-grade variant crystal into a separate location within the body's internal world, Ye Feng set up another restriction, after which no one could take away this top-grade variant crystal without Ye Feng's permission.

  Back in the physical world, Xiaoyu had already roughly counted the number of crystal stones this time. The low-grade pure crystal stone that Ye Feng needed most was several hundred thousand, which made Ye Feng's foundation building completely worry-free.

  At this moment, Ye Feng commanded the small armor to rush into the mountain body, and it was at least a few thousand meters away from the space where he had just obtained the crystal stone before Ye Feng stopped. He entered the inner world of his body here.

  The only world inside is what Ye Feng thinks is safest.

  Having enough crystal stones, it was decided to start building the foundation.

  The recent encounter made Ye Feng clearly aware of his own inadequacy, and his cultivation was really too low. No matter what level of cultivator he saw, he had to flee in a hurry, which made Ye Feng very unhappy.

  Improving cultivation is the most pressing matter at hand.

  Sitting cross-legged on the ground of his inner world, there were mountains of crystal stones piled up beside him. Due to Ye Feng's physique being completely different from that of an ordinary cultivator, during the Qi Gathering stage, he needed to absorb ten times more crystal stones than others. During the Refining stage, it was a hundred times more, and now in the Foundation Building stage, it was a thousand times more. By the time he reached the next realm, the Golden Elixir stage, it would be ten thousand times more. Ye Feng imagined this to be an astronomical figure. No wonder his sect had always treated him with a nominal title, comforting themselves by not considering him as the core of the next generation for cultivation.

  No matter which sect it is placed in, it will not be able to take out so many crystal stones for a disciple with an uncertain future.

  This is not in line with the development and strategy of a sect, let alone a declining sect like Wanghai.

  Since it's impossible to get help from the sect, I can only rely on myself now.

  He adjusted his spirit and immediately entered a state of emptiness.

  The spiritual energy in the body is no worse than the outside world, and it's really the best place for cultivation.

  Gather all the spiritual energy, fill the meridians throughout the body, and the momentum instantly reaches the peak of refining the air. The palm is directly pressed on the pile of crystal stones beside him. With such a huge number of crystal stones, it's obviously impossible to use the grab and absorb them one by one.

  "Hmm!" The mighty energy flowed directly into Ye Feng's meridians through his palm, and then merged with the heavenly spiritual energy he had absorbed from the inner world of his body, controlling this spiritual energy to gather in his dantian.

  As the spiritual energy in his body grew stronger, Ye Feng absorbed more and more crystal stone energy. Before long, half of the pile of crystal stones had been consumed by Ye Feng.

  Slightly pause for a moment, merge the two forces absorbed well and put them all into the dantian.

  And then continue this repetitive process.

  Just as the last crystal stone was absorbed by Ye Feng, a shocking and earth-shaking aura burst out from his dantian, surging towards all parts of his body through the meridians.

  "Hum!" Ye Feng's head was dizzy for a moment, and his meridians transmitted a sharp pain like being pricked by needles.

  An intense and unbearable feeling made Ye Feng's consciousness clear, and he quickly directed this force to surge throughout his body.

  Soon all the meridians in his body had undergone this baptism.

  "Empty!" Ye Feng felt a loud crash.

  It was just Ye Feng's feeling, and at this time, even if someone around him was protecting the law for him, he wouldn't hear such a voice.

  The meridians throughout the body have become much wider, and the dantian has also become larger in capacity. Faintly, as if there is a substantial object appearing in the midst of the dantian, but it is blurry and unclear, can only be felt with the mind's awareness, yet cannot be confirmed.

  Is this the foundation? Ye Feng felt the changes happening within his body. The foundation was formally called the path of cultivation, it was the basis for a cultivator's cultivation. What needed to be established was the root of cultivation. With this vague and unclear substance, there would truly be a foundation, and only then could the Golden Elixir be formed.

  Finally succeeded in building the foundation!

  Too many skills are unable to be used due to cultivation restrictions, such as divine sense transmission.

  "Xiao Yu!" Ye Feng tried to transmit his voice to Xiao Yu using his divine sense.

  Xiao Yu ran over from a distance and was indeed able to hear Ye Feng's divine sense transmission. Ye Feng was very excited, sharing the joy of successfully building his foundation with Xiao Yu.

  Xiao Yu was also delighted, although she didn't understand what foundation building was. As long as Ye Feng had something exciting or made progress in his cultivation, Xiao Yu would be happy along with him.

  Then Ye Feng looked at the Ye family members living in his inner world, Ye Qingyun and several old men of the Ye family were already enjoying themselves here, Ye Feng's inner world may not have many people to interact with them, but it was more peaceful, without the hustle and bustle of the secular world, it was simply a utopia.

  Ye Qingyun said that if there wasn't a better place to live, the Ye family would have continued to stay here.

  Ye Feng, however, did not dare to make such a decision. He was very clear about the path he was on. If he were an ordinary cultivator, it would be fine, but Ye Feng had already made too many enemies, many of whom could completely destroy the Wang Hai Sect. Even Ye Feng himself didn't know how long he could survive in the cultivation world.

  Once Ye Feng is killed by other cultivators, the people inside his inner world will probably no longer continue to survive.

  But Ye Feng didn't say this to Ye Qingyun, he was afraid that Ye Qingyun would worry about him. Looking at Ye Qingyun's graying hair, Ye Feng made a silent vow to himself: no matter what kind of opponent he faced, he had to survive, even if it was just for the people in his inner world, to give them a peaceful space.

  Ye Feng has been in this crystal mine for a long time. Every day, Xiao Jia brings back a large number of crystals, but the quantity is gradually decreasing.

  Ye Feng knew that the crystal stones nearby were about to be depleted by Xiao Jia, and the crystal stones he had collected would last for a short period of time. Staying here any longer didn't make much sense.

  The little general led himself and his companions further away, no longer paying attention to those crystals but instead heading straight forward.

  After traveling underground for an unknown amount of time, Ye Feng felt that he had already left the Crystal Stone Mine far behind and drilled out of the ground.

  Take a look around and you'll find that this is no longer a desolate wilderness. Not far away, there's a big road.

  Shaking off the dirt on his body and thoroughly cleaning up the traces, Ye Feng walked onto the main road.

  The end of the main road was a city, with many people coming and going, Ye Feng also walked towards this city.