In the thatched hut on the top of the mountain, Xu Bing sat down cross-legged after entering, took out a spirit stone, glanced at it with some heartache, then held it in his hand, closed his eyes again, and began this final sprint.

This spirit stone was given to him by the previous master, and there was still one in his arms at this time. He has always been reluctant to use these two spirit stones, and wants to wait until he has a cultivation, so as to find a way to earn some spirit stones.

But now, in order to break through this last obstacle, he also reluctantly used one of the two spirit stones, just hoping to break through as soon as possible, so that he could earn more spirit stones.

Xu Bing came in in a hurry, he didn't know that in the room on the right, Ma Yujian had already noticed all this. With a smile on his face, he looked through the wooden door, as if his gaze had passed through the wooden door and fell directly on Xu Bing's body.

Xu Bing devoted himself to his cultivation and did not pay attention to everything in the outside world.

At this moment, in his body, the familiar pale cyan aura slowly condensed again, mixed with the original aura in his body, and continued to operate, absorbing the aura between the heavens and the earth around his body bit by bit.

Originally, there was only a trace of the obstacle left, and the aura required should not be too much, but after exhaling it for a while, Xu Bing still felt that the speed of aura absorption was a little slow, even if he had used a spirit stone, but it still felt like this, which made him frown when he sat cross-legged with his eyes closed.

Ma Yujian had been paying attention to Xu Bing, but seeing him frowning at this moment, he also knew Xu Bing's thoughts, so he couldn't help but snort softly, "Hmph, this little guy is still an urgent child, even so, be generous as a teacher, help my good apprentice." After finishing speaking, I saw his right hand gently patted on his waist, and suddenly more than a dozen spirit stones flew out.

After these more than ten spirit stones flew out, they floated in front of his eyes, and he also had a pain in his flesh when he saw it, but after looking at Xu Bing again, Ma Yujian shook his head and said to himself, "You little guy is really lucky, I can meet such a good master as the old man, even my old man is a little envious of you."

As he spoke, he turned his head to the side, simply didn't look at those spirit stones, and waved his right hand at the floating spirit stones, and suddenly the more than ten spirit stones were all emitting blue light, flew away, and landed beside Xu Bing, surrounding it, rotating constantly, and the spiritual energy on it kept surging towards Xu Bing's body.

Xu Bing, who was originally cross-legged, still felt that this aura was a little scarce, and it would take a long time to break through if it continued like this. But suddenly, a burst of aura from nowhere seeped into his body, making the aura in his body suddenly dense to a rare level.

Xu Bing was overjoyed in his heart, and he didn't think about the source of this aura, and directly absorbed it with great pleasure.

The aura in his body was accumulating more and more, and at the same time, the blood was constantly running along his veins, and he could feel that the slightest obstacle in his body was almost so weak that it could be ignored, and it was possible to break through it at any time and step into the mortal realm in one fell swoop.

But what Xu Bing didn't expect was that as the aura in his body accumulated more and more, his muscles and veins seemed to have reached the limit of bearing, and bursts of pain began to come from all parts of his body, making him frown again in his knees, but this time it was not because of the lack of aura and anxiety, but because of the pain.

When Ma Yujian saw this, his old face was a little red, and he sighed secretly, "Hey, the old man has given too much, he won't kill this little guy." Saying that, he lowered his head and pondered for a while, and said to himself again, "No, no, definitely not, my old man's apprentice will definitely be able to survive." But if he doesn't survive, doesn't that prove that he is not qualified to be my old man's apprentice." After saying this, he actually smiled, obviously very satisfied with his thoughts.

On the other hand, Xu Bing, at this time, he didn't know the situation in the outside world at all, and the pain in his whole body had reached an extreme, making it difficult for him to control the aura to break through the obstacles perfectly.

After a moment of anxiety, as if blessed to his soul, his body crossed his knees broke through and stood up, but his eyes were still closed.

After Xu Bing stood up, he directly stuck to the ground and started boxing. As with the previous fights, the fist was full of roaring, and even when he threw each punch, there was still a trace of aura on the surface of the fist, but the color of this aura looked even darker.

Ma Yujian saw Xu Bing's reaction, and was immediately happy, "I'll just say, old man, my apprentice can be worse, isn't such a simple problem solved quickly." Being able to think of this fist method to dispel the mixed aura in my body so quickly, it seems that I am not too stupid, and it is not a loss to be my old man's disciple, haha......"

This fight was another half-pillar of incense, and when the set of punches was over, Xu Bing's forehead was already oozing a lot of sweat. He withdrew his fists and sat down cross-legged again, continuing to attack the slightest obstacle, and at the same time, a smile rose on the corner of his mouth, it was clear that the set of punches just now did work.

For more than a dozen breaths, just such a short time, Xu Bing in his knees felt an extremely comfortable feeling.

It's like a person who has been thirsty for a long time and has drunk a glass of cool water, or has a good rest after being tired for a long time. The last trace of obstacle in his body was completely broken through by him as all the spirit stones beside his body dissipated.

In Xu Bing's body, his tendons, veins, and blood vessels were much thicker than before, which made the aura that could be passed in it more than twice as much.

At this moment, in the dantian of his abdomen, there was a very small spiritual energy vortex, the size seemed to be less than one-tenth of the first time he practiced, but the fluctuations coming out of the spiritual energy vortex were several times stronger than before.

This aura vortex looked more refined, as if it had been compressed, becoming brighter, and at the same time, there was still aura emanating from it during the rotation, passing through all the muscles and veins in Xu Bing's body, running for a week, and returning to the aura vortex again.

Xu Bing could feel that the operation of this aura was constantly strengthening his blood, muscles and bones, but this strengthening was slow, and it would be difficult to find if he didn't feel it carefully.

However, this is just that Xu Bing has just stepped into the mortal realm, and as his cultivation continues to grow in the future, his body will definitely be strengthened and strengthened.

Breaking through the obstacle of cultivation, Xu Bing finally breathed a sigh of relief. opened his eyes, looked at his body, and just showed a smile, but suddenly a foul smell came, which made him, who was originally quite calm, almost vomit.

Xu Bing frowned, sniffed it again, and found that the source of the stench was actually his body, and when he lifted the cuffs, he saw that there was a large black sticky mud-like thing on his arm at this time.

Shaking his head helplessly, Xu Bing got out of the hut, went to the back of the mountain to find a stream, cleaned his body, changed his clothes, and then came back.

After eating some food to satisfy his stomach, he suddenly remembered that he still lacked spirit stones now, and it was urgent to earn spirit stones, so he left the hut and walked towards the place where Shen Cong's cave mansion was.