What exactly is Yuanqi, even in Yue Yu's time, it is still something that many scientists are puzzled by. The instrument could not observe its existence, but all the ancient martial arts practitioners could sense it. So it was used by many occult experts. It is one of the strongest evidence that there are phenomena in this world that cannot be explained by science.

Yue Yu also knew nothing about this Yuan Force, but he was stronger than those scholars. Because of his analytical ability, he was able to 'see' their flow within his meridians. However, he could not decipher whether it was matter or something else. I only know that this is a substance similar to the life force in the mouth of some occultists in the previous life, and it can almost be called omnipotent in one's own body. If it is an injury, if these Yuan forces are mobilized, then the recovery of the injury can be accelerated to a certain extent. The same is true for the presence of lesions in the body, which can resist and completely eliminate the existence of the former, regardless of whether it is inflammation or tumor.

On the contrary, if the Yuan Force in one's body is insufficient, then you will definitely be sick for a few days, or even longer.

In addition, whether it is the cultivation of internal breath or the strengthening of meridians, it is inseparable from this kind of thing. For example, at this moment, Yue Yu's huge vitality that frequently surged into the dantian, and with his own true yuan, it was surprisingly smooth to open up those areas of stagnation and blockage in the meridians. By the time the effect of the drug had completely subsided again, there had been three consecutive failures. It is far faster than grinding kung fu with water and improving the meridians with one's own true qi. If he could continue, even if he took into account the reduction in the effectiveness of the medicine, it would only take less than ten days to make his meridian condition catch up with the level of those who practiced martial arts with intermediate qualifications.

However, by this time, Yue Yu had already felt that the liquid substances absorbed by his Foot Yang Ming Stomach Meridian had gradually slowed down to transform into his own vitality. This made Yue Yu's heart rise with a burst of enlightenment, thinking that even this 'Pei Yuan Pill' was based on his own vitality, if he didn't have enough his own vitality to fuse and transform them, then even if he absorbed so many medicinal surnames in his body, I am afraid it would be useless.

Yue Yu couldn't help laughing at himself, thinking that in this world, there is no such good thing as ascending to the sky in one step. Even with the parasitic assistance system, he is only slightly stronger than ordinary people. Although this Peiyuan Pill is good, its effect is still limited.

Thinking of this, Yue Yu stood up. I shook the bones of my whole body, and I only felt that the energy in my body was full of vigor to the extreme, and there was a strand that wanted to scream angrily immediately, to vent it out. Fortunately, he still remembered that he was going to hide his strength now, so he reluctantly suppressed it. And when he just opened his eyes, he saw Ran Li's simple face already in front of him, with a pitiful look.

Yue Yu couldn't help but throw the porcelain bottle in his arms with a flick of his fingers, and then sat down cross-legged again. In fact, it was already close to noon at this moment, but at this time, neither Ran Li nor Yue Yu had any intention of going back to the city immediately. One of the two couldn't wait to try the medicinal power of the white pill, and he didn't even care about his empty belly. The other also needs a period of time to meditate on his future path.

There is no doubt that the successful imitation of this Peiyuan Pill can greatly speed up one's inner breath cultivation. However, according to Yue Yu's own estimates, these medicines could only help him progress to the level of an eighth-level warrior at most. The reason for the decline of the drug efficacy is due to the precipitation of drug residues, and there are also factors that are resistant to the drug. The former he can expel him, and the latter can't even do anything himself. The existence of the biological intelligence auxiliary parasitic system allows it to monitor and analyze every cell in the body, so that every system in the body can be maintained in the best condition. But that doesn't mean that even its own genes can control the change.

Therefore, if he wants to make himself stronger in a short period of time, he has to find another way.

Originally, Yue Yu's plan was if Pei Yuan Pill could be used repeatedly and without any problems. Then make every effort to improve the condition of the meridians in your body, although you can't increase too much internal breath for a while, but after a long time, the medicine surname of those Peiyuan pills can be used to the maximum.

After all, what really restricts him nowadays is the fragility and blockage of the meridians. The growth of internal cultivation can certainly improve one's own physique, strengthen one's foundation, and increase the amount of vitality produced. But if you can only run a dozen times a day, what is the use of having more vitality on your own? And if you want to improve the condition of your meridians, if your vitality does not reach a certain concentration, it will only be half the effort.

However, now, Yue Yu was ready to try his best to cultivate his true qi and raise it to a fifth-level warrior or above. His idea was to accumulate enough strength first, and then go to a few nearby mountains and forests.

Huling is the Yue family's own land, and the demon beasts have long been cleared. The medicines grown here are also controlled by the Yue clan. The same is true in the nearby mountains, the only difference is that some low-level demon beasts are retained, or should be said to be captive, for the children of the clan to conduct actual combat training.

But on the outskirts of the canyon, the rest of the mountains and primeval forests are not the case. Not only are there many extremely dangerous demon beasts above the second and third levels inside, but the clan cannot completely control them.

And although these areas were indeed more dangerous, Yue Yu was ready to go to those places as soon as possible no matter what. On the one hand, he is ready to experience a real battle with demon beasts, after all, those sword techniques and basic swordsmanship that he created himself, if he doesn't take into account the application when fighting those demon beasts, it can't be called perfect and practical after all. On the other hand, I wanted to try it and see if I could collect some precious medicinal herbs.

In the clan, in addition to Pei Yuan Dan, it should still be possible to make drugs with more efficacy. Yue Yu had heard from Yue Zhang's family that when his 'father' was alive, he would basically get a strong pill every year. And if the effect of Peiyuan Pill is only Peiyuan, then this strong marrow pill is the solid foundation.

The bone marrow is the foundation of flesh and blood, and it is the true place where all vitality is generated. The effect of the marrow strengthening pill is to a certain extent, the permanent surname strengthens the bone marrow and increases the output of its own vitality.

At that time, Yue Zhang's family was complaining, if he could have left two of them, then Xiao Yue Yu's internal training would not be as difficult as it is now. And Yue Yu has been concerned about this since then.

However, this kind of thing is a strong marrow pill, with his current level, he can't touch it at all. According to Yue Zhang's statement, it was something that his father was only qualified to receive after he successfully hit the fifth rank of martial arts. But there are less than thirty people in the entire clan like this, and as for the prescription, don't even think about it, even the Peiyuan Pill is tightly covered by the clan, not to mention the strong marrow pill above.

But this doesn't mean that Yue Yu can't do anything at all. From the daily purchases in the Yue family's pharmacy, and excluding the used ones such as the Wound Pill and the Peiyuan Pill, he could roughly guess what kind of medicine was needed for the Strength Pill.

However, he wanted to decipher the specific ingredients and find alternative herbs. Then you must first collect those precious medicinal materials. And in Yuejia City, these are all things that are fully controlled. I'm afraid the only source is to go out and collect it yourself.

Of course, this is just a matter of preparation in advance, and it would be too much trouble to actually try to dispense the medicine yourself. Yue Yu now put all his hopes on Ran Li. If this kid can break through to the martial artist realm at the age of eighteen, or earlier, maybe he will be rewarded with one or two marrow strengthening pills by the clan. At that time, it was much easier and safer to study it than to find the right prescription on your own.