Huge beads of sweat slid down from Chu Nan's forehead, which was twisted out of stripes due to pain, and merged into the diagnosis and treatment bed that had been soaked with bloodshot sweat all over his body, making the entire diagnosis and treatment bed seem to be soaked in blood, turning into a shocking and weird blood-red.

"Ho...ho...roar..."

Chu Nan gritted his teeth hard, but still couldn't help but let out a painful roar from the gap between his teeth. His whole face had been twisted into a ball, and his body was twitching gently.

The exposed skin was covered with blood at this time, and the whole person seemed to have become a bloody person.

However, Chu Nan still tried his best to control his body and prevent it from making any particularly big moves. At the same time, except for part of his attention to forcibly suppressing the pain, most of the rest was focused on the movement of the inner breath in his body.

When he was practicing the Nine-Turn Mind Method, Chu Nan had already confirmed that with his current meridian strength, he could only bear the inner breath of the Nine-Turn Mind Method at most. Once he performed the inner breath three times, the meridians would not be able to bear it, so he had never truly fully operated the inner breath three times before.

But now, he was gritting his teeth and persevering.

His previous attempts were not wrong. After the internal breathing had undergone a second turn, it had basically reached the upper limit that his meridian strength could accommodate.

After he let the internal breath flow out through the dantian and continued to perform three revolutions in his body, the meridians flowing through immediately exceeded the load limit they could withstand, and all meridians had cracks and even small-scale damage.

In this case, this internal breath flows in his body, giving him the feeling of a knife rushing through the meridians. Everything flows through will bring him great pain of meridian damage.

This kind of deep pain in the body is extremely unbearable. If it were normal circumstances, Chu Nan would have given up continuing to do so long ago.

However, now there is a belief that supports Chu Nan, making him grit his teeth and continue to persevere.

Must succeed!

Must be improved!

Must win!

Because of the pain, Chu Nan had to distract part of his attention and forcefully suppress it. This time the control of internal energy must be more refined and precise, so the speed of Chu Nan controlling the circulation of internal energy for three times this time was much slower than the previous two operation cycles.

Correspondingly, this also brought him a longer period of pleasure.

However, Chu Nan did not even allow himself to feel numb to the pain, because he had to clearly grasp the most precise situation of the inner breath after each meridian flowed, and could not have any deviations, otherwise his attempt would be almost in vain.

He was extremely painful, but he could not give up, and he could not try to slow down. He even distracted himself from his attention and could not do it. For the first time in his life, Chu Nan tasted the feeling of living like a year, or even spending a second like a year.

Fortunately, his Nine-Turn Mind Method has only been practiced to the third level, and his meridians have been opened for limited. This factor that greatly limits his strength, but it also prevents him from being forced to endure pain for so long.

Finally, after Chu Nan had no idea how long he had lasted, the three-turn inner breath flowed through the meridians in his body with great difficulty. Compared to before, it was significantly thicker and stronger, and returned to his dantian.

At this time, Chu Nan was finally able to relax his tense spirit a little.

However, this relaxation caused a strong pain from the deep layers of his body to come at the same time, making him unable to help but open his mouth and let out a long scream.

"ah------"

After a while, Chu Nan let out a breath and barely calmed down.

After a little adjustment of his breath, Chu Nan spoke extremely weakly.

"Main control of the optical brain, conduct a full-body examination."

"OK."

Various probes rushed forward and completed a full-body examination of Chu Nan in a short while.

"College Chu Nan, your blood vessels in your body have been damaged to varying degrees, and all physical data are at an extremely low level. It is recommended to receive corresponding treatment immediately."

"Okay, I understand." Chu Nan let out a breath and waved his hand. "There is no need for treatment. You continue to monitor my physical condition. Just like before, if it is not life-threatening, don't worry."

The main control optical brain did not agree immediately this time, but surrounded a bunch of detection probes without Chu Nan's order.

"Warning. Student Chu Nan, your current physical condition is already at a very dangerous level. If you continue your behavior just now, it will be very likely to lead to life danger."

"So now, isn't life in danger?" Chu Nan smiled and thought that this main control optical brain indeed has super high artificial intelligence, which is completely different from ordinary optical brains.

"Warning. Once you are in danger of your life, follow the procedure and I will force you to receive the corresponding treatment."

"Okay, I just let you do this."

Chu Nan glanced at the various monitoring probes around him, as if they were facing a great enemy, took a breath, calmed down, closed his eyes again, condensed his spirit again, and a trace of inner breath came out of his dantian.

This time, instead of performing three internal breaths again, he adjusted this faint internal breath into a high-frequency vibration state, simulating the form of high-frequency pulse convection, and moving forward slowly and carefully in the meridians that had just been damaged.

When he accidentally learned this method, Chu Nan discovered that this special internal breathing operation method can not only enhance muscle cell activity, thereby alleviating muscle fatigue, treating muscle trauma, and also provide certain treatment and improvement to the meridians.

Now the meridians were severely damaged because he had forced the three internal breathing turn just now, so Chu Nan tried to use this method to repair the meridians without borrowing external forces.

In this experiment, it was immediately discovered that this method does have miraculous effects.

Because of the weak strength of this inner breath in the high-frequency vibration state, it will not cause damage to the already injured meridians again. Instead, Chu Nan can clearly feel that the outer wall of the damaged meridian blood vessels immediately after the internal breath flows through this inner breath, it immediately starts to heal quickly at a clearly visible speed.

After running this way for one day, the meridians will obviously improve.

Chu Nan was excited and continued to control this strand of internal breath to maintain a high-frequency vibration state, and continued to operate in the damaged meridians.

The damaged meridians actually improved little by little, and the effect was even much better than receiving treatment from the main control optical brain.

After circulating for thirty-seven weeks, Chu Nan felt that his damaged meridians never felt any pain.

He was not very relieved, so he controlled the trace of internal breath again for two weeks before he ordered the main control light brain: "Go again to have a full body examination."

"OK."

Soon, the monitoring probes completed their work.

"College Chu Nan, your body is in good condition now, but your body has serious nutritional deficiency. It is recommended to supplement all kinds of nutrition immediately."

"Serious nutritional deficiency?" Chu Nan was stunned. After thinking for a while, he felt that it must be because he had left too much blood and sweat just now. "Well... then add some more to me."

"Okay, I'm preparing nutritional needles for you, please wait."

After a while, a probe quickly approached Chu Nan, and a sharp needle suddenly stretched out from the front end, and then pricked Chu Nan without hesitation.

A heat flow penetrated into Chu Nan's blood vessels from the needle and quickly flowed through his whole body. Chu Nan immediately felt his whole body full of strength and his spirit was also boosted.

"very good."

After receiving basic nutritional supplements, Chu Nan clenched his fist hard, feeling that he had regained vitality again, then took a deep breath, paused for a moment, and another internal breathing function in the dantian, which quickly flowed completely in the meridians.

Next, the internal interest rate continued to complete the second transfer of internal interest.

Then the internal interest rate still did not stop at all, and the internal interest rate three times began to turn again.

"Ho...ho..."

The meridian blood vessels that had just been cured instantly began to rupture due to the super strong internal breath of the three revolutions.

Although he had enough mental preparation, Chu Nan still couldn't help but groan in pain because of the huge pain.

However, this time, in addition to enduring the pain, he had a little more surprise.

Compared to when I tried the three internal breathing reversals just now, the pain this time was obviously smaller, and the damage to the meridians became obviously weaker.

This is enough to prove that after the damage and repair just now, the meridians have become slightly stronger.

Although it is not particularly obvious, it can be distinguished.

If it weren't for continuing to work hard to carry out the three internal interest transfers, Chu Nan would almost laugh out loud.

This bold attempt seems to be effective!
Chapter completed!