In the courtyard, under the locust tree.

Lin Zhongtian sat cross-legged on a stone cushion, his eyes closed and his mind focused, with his five hearts facing the sky.

At this moment, a pure white locust flower slowly fell. When it was about to land on Lin Zhongtian's hair, it suddenly turned around strangely and floated forward as if blown away by the wind.

Lin Zhongtian slowly opened his eyes, and an invisible airflow surged out from his body, blowing up his clothes.

“Is this inner strength…?”

Lin Zhongtian looked at his slightly warm palm thoughtfully, then shook his head.

It would be better to say that this power is internal energy rather than internal force.

With the help of the sclera-like vision, Lin Zhongtian could clearly see a stream of air as thin as a hair in his body, starting from the lower dantian, going up against the Du meridian, passing through the three gates of the coccyx, the jiaji, and the occipital bone, reaching the upper dantian at the center of the eyebrows, then going down along the ren meridian, passing through the middle dantian, and finally returning to the lower dantian.

This cycle repeats itself over and over again, which is called a small circulation.

As for the Great Circulation, it disperses the airflow to the limbs and bones, which are the so-called twelve meridians, on the basis of the Small Circulation.

At this stage, the most obvious sign is a slight warmth or numbness in the hands and feet.

According to Shen Lian, even a genius cultivator in this world would need half a year to complete a small circulation and then possess the unique sense of Qi of the small circulation.

As for the Great Circulation, it takes ten years to formally get started.

And how long did it take Lin Zhongtian to complete a great cycle...

Two days.

In just two days, it is equivalent to ten years of practice for an ordinary genius.

This is not because of how talented Lin Zhongtian is, but because he has a high-dimensional perspective that ordinary people do not have.

You know, the process of practicing internal skills and circulating the Qi in the body is very abstract.

If an ordinary person wants to achieve a small circulation from scratch, he needs to rely on his feelings and imagination to explore it slowly.

But Lin Zhongtian was able to observe the whole process clearly with the help of his white-eye vision, and with the help of the gray fog's control over the body, he was able to correct the path of the internal energy flow in a timely manner.

With the help of this plug-in, Lin Zhongtian officially mastered the "Qingjing Gong" in just two days.

Now, the internal energy in his body has achieved a perfect circulation and can operate on its own without any control.

Lin Zhongtian stretched out his left hand and caught the locust flowers falling from above. He exhaled his internal energy, and the locust flowers immediately spun and flew up.

Seeing this scene, Lin Zhongtian showed a smile on his face.

No wonder that Taoist priest Wang chose to demonstrate his inner strength by blowing yellow paper apart.

It turns out that the internal energy in the Great Circulation stage can only flow out from five acupoints: the Laogong point on the palm, the Yongquan point on the sole of the foot, and the Baihui point on the top of the head. If it doesn't need to be displayed on the palms, does it need to be displayed on the soles of the feet and the top of the head?

Lin Zhongtian had a smile on his face and kept blowing up the falling locust flowers with his palms.

After playing for a while, Lin Zhongtian put away his interest in playing and started the next stage of the attempt.

By the stage of Great Circulation, the circulation of internal Qi in the body has reached a perfect state. What is needed next is to accumulate it over time, slowly nurturing the internal Qi through hard work, so that it will continue to grow.

Generally speaking, this stage of practice is lifelong.

With normal diet and practice, it would take at least thirty years to fill the Ren and Du meridians with internal energy and achieve the perfect small circulation state of continuous and endless internal energy, which is what is referred to as small success in "Qingjing Gong".

As for the perfect state of great circulation that fills the whole body, ordinary people will never be able to achieve it in their lifetime without rare talents and treasures.

Lin Zhongtian can cheat in the Qi perception stage by relying on his white-eyes-like perspective, but there is nothing he can do about the subsequent hard work - unless his gray fog also has a bonus effect on internal Qi.

Lin Zhongtian's mind moved, and a wisp of the gray fog in his head suddenly separated and joined the circulation of the meridians through the Baihui point on the top of his head.

At the moment when the gray fog came into contact with the internal energy, the airflow, which was originally only as thick as a hair, suddenly surged.

Internal energy continuously grew from the gray fog, and in just a few seconds, it grew to the thickness of a finger.

“It really works!”

A smile appeared on Lin Zhongtian's face. The gray fog had never let him down.

But what he didn't expect was that just a wisp of gray mist was not enough to feed the little tiger Chang'an. After it was integrated into the internal energy, it directly filled his Ren and Du meridians with internal energy, reaching the small success stage recorded in "Qingjing Gong".

Even after achieving minor success, a wisp of gray mist still remained.

Looking at the overflowing internal energy flowing through his Ren and Du meridians, Lin Zhongtian looked strange, and suddenly felt that his previous use of gray mist to strengthen his body seemed a bit wasted...

But it doesn’t matter, his void space lacks everything except gray fog.

Not to mention a wisp, even a foggy mountain is just a drop in the ocean compared to the sea of ​​fog.

"Great, I can start cheating again!"

Lin Zhongtian's spirits lifted, and he enthusiastically transformed the gray fog into internal energy.

Five minutes later, Lin Zhongtian's clothes were puffed out, and the internal energy in his body was continuously undergoing a perfect circulation.

According to the description in "Qingjing Gong", Lin Zhongtian should find a quiet room at this time, take a bath, and take advantage of the internal qi circulation and the opening of pores to remove hair and cleanse marrow, thereby clearing toxins and impurities from the body.

But Lin Zhongtian's body had already been strengthened by the gray fog, and even removing his hair and washing his marrow could not expel any impurities.

This process is therefore omitted.

When the internal energy filled his whole body, Lin Zhongtian opened his eyes again, with a gleam of light in his eyes.

If an ordinary person were to look into his eyes at this moment, he would definitely have the illusion of being hurt by his gaze.

Soon, Lin Zhongtian restrained his internal energy, and the brilliance in his eyes also became restrained, as if he had returned to his original state.

“Is this the end?”

Lin Zhongtian looked surprised, and after carefully experiencing it, he couldn't help but frown.

Perhaps it was because of the strengthening of the gray fog that this body had already reached a perfect state. After the Qingjing Gong was perfected, Lin Zhongtian did not notice any obvious changes in this body.

He did not feel any of the effects that Shen Lian mentioned, such as curing all diseases and restoring youth.

There wasn't even any improvement in strength.

The only change is probably the addition of a constantly circulating airflow in the body.

According to the description in the exercises, these internal energies can nourish the body as they circulate through the meridians.

But Lin Zhongtian's body was too strong, and his internal energy could not be nourished at all, and could not even break through the constraints of his meridians. It could only circulate infinitely along the veins in his body, just like warm water flowing in a steel pipe.

This is a bit too tasteless!

Lin Zhongtian was unwilling to give up, so he closed his eyes and continued to transform the gray fog into internal energy.

This time, there was still no subsequent practice in the Qingjing Gong, and Lin Zhongtian didn't know how to continue practicing. He could only continuously transform the gray fog into internal energy, and rely on his strong body to contain the huge amount of internal energy.

After another quarter of an hour, the internal energy in Lin Zhongtian's body had been compressed to its limit.

The originally invisible airflow gradually became substantial, and the Zhoutian meridians that were circulating the internal energy also showed signs of being unable to bear the pressure.

"It seems that this is the current limit."

Lin Zhongtian did not continue to confront him head-on, but decisively stopped the process of the gray fog transforming into internal energy.

Then he stood up, looked at the palm of his left hand, and carefully circulated his internal energy.

"Bang--"

In an instant, the internal energy that had been compressed to the extreme gushed out from the Baihui point in the palm of the hand.

Lin Zhongtian was startled and quickly raised his head, but the internal energy still rubbed his nose tip.

"boom--"

There was only a muffled sound, and the internal energy was like a cannonball that instantly cleared out the locust flowers above his head.

Lin Zhongtian rubbed his slightly red nose, and looked at the white locust flowers falling like rain in front of him, his expression became strange.

"So what on earth did I develop..."

"Air cannon?"

Lin Zhongtian looked at his left hand with a strange expression, then stretched it out again and circulated his internal energy towards the stone cushion under his feet.

"Bang--"

The internal energy that had been compressed to the extreme gushed out again, hitting the stone cushion and raising countless stone chips.

When the stone chips dispersed, a semicircular hole with smooth edges and the thickness of a finger suddenly appeared on it.