In the blink of an eye, more than a month passed by in a hurry, Lin Fei had been in seclusion for a month. The blood of the Gold Crown Treasure Snake had already been consumed. The effect of taking the treasure snake blood and Burst Qi Pill together was beyond imagination.

Lin Fei's Three Vitality Technique, almost every day, advanced by about 14% in cultivation progress.

The ninth level, the tenth level, the eleventh level, the twelfth level...

In the blink of an eye, Lin Fei's inner power reached the twelfth level! The twelfth level of the acquired realm was also known as the peak of the acquired realm. All twelve meridians had been cleared.

Now, the surging inner power within Lin Fei's body could flow unimpeded through the various meridians, completing a small cycle. However, the inner power could only circulate within the body. It could only be considered a small cycle. If it were a large cycle, it would inevitably pass through the Ren and Du meridians.

But opening up the Ren and Du meridians was extremely difficult. This was related to whether one could advance to the innate realm.

The Ren and Du meridians were also known as the bridge between heaven and earth in the human body. Once the Ren and Du meridians were opened, one could connect with heaven and earth.

When the inner power circulates, it could form a large cycle, capture the spiritual qi between heaven and earth and transform it into innate true qi. Once it transformed into innate true qi, it was actually equivalent to a Qi Condensation cultivator's spiritual power.

This was why only innate martial artists could confront Qi cultivators. Because, in a sense, once a Qi cultivator developed their qi sense, in fact, it was equivalent to the true qi of an innate expert. Even at the first level of Qi Condensation, they were on par with innate experts.

Of course, comparing innate true qi with spiritual power only means they were at the same level. It did not mean their combat power was the same.

Some rogue cultivators who encountered innate martial artists wouldn't fare well. They might even be crushed by innate martial artists.

However, if it were orthodox Qi cultivators with magical artifacts, spells, talismans, and even the ability to set up formations, in such cases, it would depend on the martial arts strength and battle experience of the innate expert, as well as the strength of the Qi cultivator's magical artifacts, spells, formations, etc. Who was stronger and who was weaker could only be known after a fight.

Lin Fei swallowed a Burst Qi Pill directly.

"Buzz."

Lin Fei felt his inner power churning within his body, and then, there was no more. He swallowed another Burst Qi Pill. It merely made his inner power churn for a moment. Then, the inner power gradually calmed down.

As for increasing a certain percentage of inner power? Lin Fei sensed his current inner power. The Burst Qi Pill was like a drop of water entering the vast ocean. It couldn't stir up any waves at all.

Because Lin Fei had already reached the peak of the acquired twelfth level! His inner power could no longer advance!

"Sure enough, when inner power reaches its limit, even Burst Qi Pills are of no use."

A glint flashed in Lin Fei's eyes. He seemed to have anticipated this. After all, the human body is just mortal flesh. There is ultimately a limit.

For example, acquired martial artists use their bodies to contain inner power. There must be a limit to that. Lin Fei had now reached the limit of what his body could contain.

"System."

He immediately activated the system panel to check his martial arts progress.

Host: Lin Fei

Martial Arts Realm: Acquired Peak

Saber Intent: Mastery (Progress 16%)

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Fist Intent: Mastery (Progress 45%)

Three Vitality Technique: Twelfth Level (Progress 0%)

Leaping Technique: Perfection (Progress 0%)

Flowing Clothes Skill: Transcendence (Progress 0%)

In just over a month, Lin Fei's Three Vitality Technique had finally reached the twelfth level limit. It could no longer be improved. Moreover, Lin Fei still had a large number of Burst Qi Pills that he hadn't taken. This was also a miscalculation by Lin Fei.

He didn't expect that the effect of the Gold Crown Treasure Snake's blood would be so good. It allowed him to make rapid progress in just over a month, directly reaching the peak of the acquired twelfth level.

At this time, even Burst Qi Pills were useless. For Lin Fei, there was only one path for him now. That was to assault the Ren and Du meridians.

Once he succeeded in the assault, he would be able to advance to the innate realm. However, assaulting the Ren and Du meridians was extremely dangerous. One must not attempt it without full confidence. Because once the assault failed, the Ren and Du meridians would collapse. At that time, they would be completely blocked. And one would never be able to achieve the innate realm in their lifetime.

That's why the number of innate martial artists was so rare. It was because of the danger of assaulting the Ren and Du meridians, many people wasted decades at the peak of the acquired realm. They never dared to give it a try. By the time they were truly old and tried to give it a go, it was already too late.

"My inner power should be enough. After all, it is a combination of the three. Based on this foundation, my inner power far surpasses other acquired twelfth level peak martial artists. However, to assault the Ren and Du meridians, I must be well-prepared and ensure success. The experience of advancing to the innate realm is crucial."

Lin Fei furrowed his brows. He didn't have the experience of advancing to the innate realm. This was extremely important. If he were in the Nine Profound Sect, this wouldn't be a problem.

Lin Fei's master, Zhao Kongming, was an innate martial artist. He had enough experience to teach Lin Fei how to open the Ren and Du meridians and advance to the innate realm.

However, Lin Fei couldn't return to the Nine Profound Sect. What if He Mountain Dao's high-level Qi Condensation expert ambushed him on the way? Lin Fei didn't dare to take the risk, especially at this critical moment of advancing to the innate realm.

Lin Fei couldn't take any chances.

"Let's wait a bit longer. Senior Sister Ling Yao hasn't returned from the secret realm yet. Once she returns, with her identity as Princess, she must be able to find some experiences of martial artists assaulting the Ren and Du meridians. I've endured it for over a month, and now there's only one step left. I can't be impatient now!"

The more critical the moment, the more composed one should be. In this way, a few more days passed.

"Lin Fei, I'm back!" Ling Yao returned and there was excitement in her eyes.

"Senior Sister Ling Yao, what benefits did you gain from spending so long in the secret realm?" Lin Fei knew that Ling Yao must have obtained some advantages.

"Hahaha, Lin Fei, you wouldn't have guessed that in the secret realm, I found two Zhu Fruits. These Zhu Fruits can prolong one's life, strengthen the body, and invigorate the spirit. If acquired martial artists consume them, their inner power will definitely increase greatly.

Remember that I had previously taken the Heavenly Meridian Pill and reached the acquired seventh level, right? Now, after consuming one Zhu Fruit, I've already reached the acquired eighth level! I brought the last Zhu Fruit out for you, as you definitely need it!"

Ling Yao took out a box and she opened it. Inside was a red fruit, it emitted a unique fragrance.

"Senior Sister is truly blessed. Even able to encounter Zhu Fruits."

Ling Yao laughed and said, "Isn't it all thanks to you? If it weren't for you, I wouldn't have had the chance to enter the secret realm, and how could I have obtained Zhu Fruits? Lin Fei, hurry up and take it.

With the Zhu Fruit and the Heavenly Meridian Pill, you'll definitely reach the acquired tenth level! If you continue to practice diligently, reaching the acquired twelfth level peak in one or two years is a sure thing. By then, you'll be able to attempt opening the Ren and Du meridians and have a chance to enter the innate realm!"

The dream of martial artists was to achieve innate realm! But it was too difficult. It had stumped countless martial artists. Even though Ling Yao was now at the acquired eighth level, she still didn't have the confidence to achieve the innate realm.

Lin Fei took a deep look at the Zhu Fruit. Then shook his head, pushed the Zhu Fruit back, and calmly said, "Senior Sister, I appreciate your kindness, but there is no limit to the number of times the Zhu Fruit can be consumed. If I'm not mistaken, Senior Sister can consume another Zhu Fruit. Breaking through to the acquired ninth level shouldn't be a problem."

Ling Yao shook her head and said, "Lin Fei, don't refuse. What's the point of me reaching the acquired ninth level? This Zhu Fruit will be put to its greatest use when given to you. It's a pity that there are only two Zhu Fruits. I originally wanted to give them both to you, but I didn't recognize the Zhu Fruit before and mistakenly swallowed one, so now there's only one left..."

Ling Yao still felt it was a waste that she had eaten one Zhu Fruit.

"Senior Sister, I'm not refusing. But this Zhu Fruit is already useless to me. I don't even need the Zhu Fruit now, let alone the Heavenly Meridian Pill. Because I've already reached the acquired twelfth level and am at the peak of the acquired realm!"

The next moment, Lin Fei's inner power erupted completely. A terrifying aura emanated from Lin Fei's body, causing Ling Yao to tremble all over!

This wasn't Martial Dao True Intent. It was pure inner power. Acquired twelfth level, the true peak of the acquired realm, was only one step away from the innate realm!