When Poplar meditated again, his state of mind was very different. He first entered the space of the lower dantian through the black hole, and saw the purple ball that had expanded in a circle, although there was still a long way to go to fill this space, but the future was still promising, and there was no need to rush for a while.

Poplar calmed down and savored everything in this space. Although Poplar searched this small space inside and out before, it was just a casual look, and he didn't feel it so carefully.

Poplar tried to turn off his senses, not listening, not looking, not smelling, shielding himself from all external interference, and the world was silent at this moment, and it was dark in front of him.

Time seemed to stop at this point, and Poplar was completely unaware of the passage of time. This feeling is just like when the poplar returned to the light and dreamed back to the mother's body, in an infinitely vast dark space, infinitely high up and down, infinitely far left and right.

I don't know how long it took, but Poplar suddenly noticed a faint light in front of him, but he had obviously turned off his senses.

Without thinking much about it, Poplar continued to sink his heart and experience. I saw that the light was gradually approaching, or gradually enlarged, and the aspen could not be distinguished for a while.

When he "looked" more clearly, Poplar found that it was a milky white whirlpool, which was somewhat similar to the black hole in the dantian, except that the color was different. The center of this vortex is completely white, flawless, pure and white.

"This is almost entirely the opposite of a black hole." Poplar thought to himself.

"That's it, I see." The next moment, Poplar suddenly woke up, as if he had grasped the main point.

Then, Bai Yang reopened his senses, and then turned around to observe the direction when he entered the dantian space, and then he saw that in the place where the purple qi continued to pour into the dantian and condensed into liquid, there was a faint white light in the center, but this purple was too abundant, and it was almost completely obscured.

"It should be like this, the opposite of a black hole is a white hole, and the black hole is responsible for swallowing, and the white hole is the opposite."

"In the same way, if I want to reuse the purple qi in this space, then I need to open up or find another black hole in it, so that there will naturally be entry and exit."

"So where is the most likely black hole in this space?" Poplar doesn't want to be targeted, and if there is a purposeful search, the efficiency should be much higher.

"If we speculate in the simplest way of thinking that everything in the world is relatively balanced and symmetrical from a microscopic perspective, then the most likely place is that."

Poplar fixed his gaze on one place, which was the point that was symmetrical with the white hole in the space, and in the middle was a small ball formed by the condensation of purple qi. Two points and one line, and then use this to determine the third point, the reason is extremely simple.

"Then let's test this simple geometric conjecture." Poplar was also happy in his heart, just like when he was a child, when he was a child, he wrote out the solution step by step, and he felt a sense of accomplishment, and then it was time to verify the answer.

Poplar thought about it, but also poured all his consciousness into that unknown point. At first, there was nothing in time and space, and then as the poplar condensed into a needle, and gradually explored deeply, it was faintly found that there was a faint imperceptible suction on this infinitesimal singularity, and the deeper and longer the needle of consciousness penetrated, the singularity was more and more expanded, and the suction power was also increasing.

"It's finished." Poplar was overjoyed, and it seemed that his guess was completely correct.

However, after a long time, Poplar found that his consciousness was becoming more and more tired, and it would take a great deal of energy to open up this black hole.

"Let's stop opening up and rest for a while."

Poplar Consciousness withdrew from the black hole, and then began to meditate. Because this meditation method can not only speed up the absorption of purple qi for cultivation, but also quickly restore consciousness and energy.

About half an hour later, when the poplar felt that it had fully recovered, a new round of opening up of the black hole in the dantian began.

After repeating this several times, the size of the black hole has reached half of the white hole, and then the poplar first went out of the dantian space, and as expected, outside the dantian, a white vortex was seen in the opposite direction to the external black hole, but there was no purple gas overflowing from the vortex.

"Try using the purple qi in the dantian." Bai Yang thought so, and then his mind moved, and the crystal purple ball in the dantian spun out, and the silk droplets seemed to be pulled by something, flying towards the black hole inside like a string of purple pearls.

The purple droplets passed through the black hole, and I don't know what the process went through, and finally spewed out from the outer white hole, turning into purple gas again.

Although this purple qi looked no different, Bai Yang clearly felt that this was the purple qi that had been refined by his own dantian, and it had completely marked itself with his own brand, so it could be completely controlled and driven by himself.

Try it when you think of it, and when Bai Yang's mind moves again, the purple qi quickly travels along the meridians and flesh and blood of the body. Then Bai Yang felt that his physical fitness had skyrocketed again under the rolling impact of this purple qi, but this increase should be temporary, because Bai Yang could not continue to fuse it into flesh and blood like ordinary purple qi.

Obviously, purple qi can be absorbed by both flesh and blood and dantian before it is refined, but the purple qi that has been refined by dantian can only have a temporary increase effect on the body, and the two are indeed distinct.

And outside the body, Bai Yang also found that his body surface was covered with a faint purple halo at this time, and its fundamental properties were the same as those of the purple qi that had been refined.

Seeing this phenomenon, Poplar immediately finished his meditation, and then without hesitation, he raised his fist and bombarded a cement slab next to him.

"Boom." After a loud bang, the cement slab was broken from the middle, and even the steel bars inside were broken.

"It's terrifying." Poplar laughed.

And he didn't feel any pain in his right hand this time, it was obvious that this purple qi could not only temporarily enhance the strength of the physical body and the strength of resistance to blows, but also be used to protect the body.

"It's perverted." Poplar was so excited that he began to swing his fists and smash them around.

"Boom, boom." The continuous roar came, and the shadow of the poplar fist roared, and I felt that I was really invincible, and I had the potential to give up on me. As everyone knows, in the eyes of outsiders, he really looks like a mad demon dancing and beating around.

After waving like this for a long time, Bai Yang finally withdrew his fists, pretended to make a gesture of closing his strength, and then with a movement in his heart, he dispersed the purple qi around his body and returned to the dantian.

After that, Bai Yang was also surprised to find that the black hole outside the dantian automatically accelerated the speed of absorbing and refining the external purple qi at this time, until it replenished the purple qi consumed before a short time, and then returned to its original speed.

"The small ball in this dantian is like a malleable water cup, in the process of absorbing and refining purple qi in the black hole, it is like this water cup is constantly expanding while filling with water, even if part of the water in the cup is consumed, it can still be replenished quickly, because the upper limit of the water in the water cup itself has been increased."

"As for the fixed 100-meter space inside the dantian, it should be the limit of what this water cup can grow, I don't know what is after this limit." Poplar was even more looking forward to it.

"Okay, you can continue to try to develop the black hole inside, so that you can use the power of the dantian to be more handy."

Without further ado, Bai Yang put away his thoughts and concentrated his consciousness on the black hole inside the lower dantian.

Two hours later, Poplar finally expanded the size of the black hole to the same size as the white hole, and then continued to open up an inch and never move any further.

Poplar is not surprised, it can't be opened up infinitely, and now such an absolute balance and symmetry relationship makes his obsessive-compulsive disorder very comfortable.

Then Bai Yang smashed again, and he obviously felt that because of the increase in efficiency of using the power of the dantian, his actual combat power was increased by a few points, and it was more enjoyable and natural to use.

Of course, he also took the opportunity to test his limit, constantly increasing the speed of extracting purple qi from the dantian, and did not stop speeding up until his body faintly felt a tingling pain, and at this time it may be the peak of his current real strength.

Bai Yang carefully recalled the experience of this epiphany, and found that it seemed to be related to the feeling of the light signs of the dream back to the mother's body, and the first time he had this feeling, he sensed the three dantian in his infancy, and then found the lower dantian in his current body.

At the time, Poplar thought that the two would be related, but there was no direct evidence, and now this feeling is becoming more and more intense.

And the ancestor also said very clearly, the reason why he chose Poplar is also because of the signs of this light, and now it seems that Poplar has really experienced the benefits of this state, but I don't know what kind of surprise it will bring to Poplar in the future.

"It's time to go back, too." Bai Yang retracted his thoughts and looked at the time, it was almost 6 o'clock in the morning, and the cultivation time passed quite quickly.

"By the way, try the speed of your peak." Poplar muttered to himself.

With a "whoosh", Poplar rushed out of the even more unsightly ruins that he was ravaging havoc on, and then slowly increased his speed, and then increased his speed again until he reached the fastest speed, which was several times more than the strength of his body before.

"So much?" Bai Yang was also surprised in his heart, according to his current speed, it was definitely no less than a car driving on the highway.

"Haha, happy."

"Ouch, I'll go."

Just when Poplar was laughing heartily, he accidentally swallowed a large mouthful of air because of his speed, but this breath did not turn around, and he suddenly disordered the breath in his body, and his feet were unstable, and he fell to the sky with a "bang".