As if to answer Xiao Ze's doubts, Yang Yi behind him suddenly said: "These caves are the vents of the entire Dan room, and the windmill on the cave is driven by the heat energy generated by the fire of the lungs, after all, in the Dan room, the fire of the lungs is burning all the time, which will make the air in the Dan room become extremely turbid, so the air circulation in the Dan room must be ensured." ”

Xiao Ze was dumbfounded when he heard this, and couldn't help but sigh in his heart The magic of nature, there is actually the existence of the fire of the lungs in the depths of the ground, and the heat energy generated by the burning of the fire of the lungs can also push the windmill, which is really the most strange in the world.

Looking at Xiao Ze's face full of surprise, Yang Yi smiled and said: "Actually, this is similar to the cultivation of our Qi Refiners, who condense the spiritual qi of heaven and earth and incarnate into their own true qi, and then export the true qi in their bodies through the Qi refining technique, generating a stream of energy, and exerting a powerful destructive power to hit the opponent." The same is true of the fire of the earth lungs, it will also produce a stream of energy when it burns, just like the same reason that we qi refiners are refining the spiritual energy of heaven and earth and transforming it into true qi. ”

"I see, it's amazing!" After listening to Yang Yi's explanation, Xiao Ze exclaimed.

"There is nothing strange about this, the cultivator's cultivation to the advanced realm is to comprehend the power of heaven and earth, so as to achieve the purpose of borrowing the power of heaven and earth, it is said that once the monk can break the void and reach the realm of immortals, then every move will attract the power of heaven and earth. Yang Yi said with a smile.

Xiao Ze nodded, there is nothing strange about the monks who can reach the realm of immortals can attract the power of heaven and earth with every move, after all, after reaching that realm, they can live forever, but this is not the scope of Xiao Ze, the realm of immortals is too far away for Xiao Ze, even his parents and the existence of the sect master of the Qing Sect in the North Pole, the realm of immortals is just a legend in front of them!

Don't look at Xiao Ze now with the title of "Advanced Master", but compared to the entire cultivation world, he is really too weak and too weak.

"Okay, don't look at it, come to me!" Yang Yi walked to the table and sat down, beckoning to Xiao Ze.

When Xiao Ze heard this, he immediately walked over, took off his robe, and sat shirtless on a futon in front of Yang Yi. The weather outside the Dan is cold, but because of the existence of the fire of the lungs indoors, the temperature is extremely high, just like the summer in the south, the whole Dan room is like a big steamer, and even the surrounding stone walls are hot.

Seeing Xiao Ze do it, Yang Yi said: "Before teaching you to refine medicine, I will tell you about the common sense of medicine refining and medicine, your physique is not much trained now, and it is time to start cultivating the "Xuanhuang Secret Power", and after you have mastered the foundation of the medicine path, I will officially teach you the "Xuanhuang Secret Power". ”

After hearing that he could finally cultivate "Xuanhuang Secret Power", Xiao Ze was excited in his heart, he trained his physical endurance for half a year under the guidance of Yang Yi, and he was eager to cultivate "Xuanhuang Secret Power" every day, but Yang Yi said that he was not allowed to practice until his physical fitness reached Yang Yi's standard.

Therefore, without Yang Yi's permission, Xiao Ze did not dare to practice without permission, and the daily hard training was to make his physical fitness meet Yang Yi's standards as soon as possible, and now he finally heard Yang Yi admit his training results, and his heart was naturally very happy.

"There are countless medicinal materials in the world, and one of the ways of 'medicine' is even more profound and profound. No one in this world dares to say that he is completely proficient in the 'medicine' path. ”

"Isn't Grandpa Yang Yi okay?" Xiao Ze asked in surprise. In his opinion, Yang Yi was called the "Medicine Saint" by people in the cultivation world, and his achievements in the path of medicine must be extremely high, and he must be proficient in all the medicines in the world.

For Yang Yi, Xiao Ze still admires it very much. When he was a child, Xiao Ze also had a strong interest in "medicine", and he also admired Yang Yi's name of "Medicine Saint". What is a holy? It must be the person who has made the greatest achievements in a certain field to be called holy.

"There are thousands of medicines in the world, who can say that I can completely penetrate them, although I am called the medicine saint by the world, I still dare not say that I have reached the extreme of the medicine path!" Yang Yi explained with a smile.

In fact, theoretically, there is no ultimate way to "medicine". Yang Yi continued: "You must know that the medicine can be used together, I can use different medicines to prepare medicines with different effects, just take the "Xuanhuang Secret Power" that I modified, for example, the refining of the quenching elixir required for the first layer of cultivation alone requires more than five hundred kinds of elixir and spiritual objects, and the amount of each elixir and spiritual object when refining, as well as the time for putting it into the Ding furnace, are all stipulated, and there is no difference in the slightest, how many changes are there to be in it. ”

"What, so troublesome!" Xiao Ze frowned when he heard this, he had always thought that medicine was much simpler than cultivation, but now that he heard it, it was not the case, and he couldn't help but say: "Then Grandpa Yang Yi must have spent a lot of time and effort to improve the Xuanhuang Secret Power." ”

In Xiao Ze's opinion, just cultivating the first weight of the "Xuanhuang Secret Power" quenching spiritual liquid requires more than 500 kinds of elixir and spiritual objects to be refined with each other, among which the amount and heat must be mastered when refining, and I am afraid that no seven or eight years of research may not be successful, and there are five layers behind, Xiao Ze has seen the original "Xuanhuang Secret Power", and he has also seen Yang Yi improve it, and he also has a certain understanding of this set of body refining secret methods, which is the more elixir spiritual objects are needed later, I really don't know how Yang Yi researched it.

"It took me a total of eight years to improve this set of body refining secret methods from the first level to the sixth level, which is indeed not a short time. ”

"What? It's only been eight years?" Xiao Ze was taken aback, he originally thought that Yang Yi had spent at least a few decades on this.

"It's strange, isn't it? Actually, it's nothing, when you officially get involved in medicine, you will understand that when an alchemist refines more elixirs, after many elixirs and spiritual objects are successfully refined with each other, there will be a vague understanding in your heart, so you don't need to try each one when researching a certain prescription," Yang Yi explained to Xiao Ze with a smile.

"I see!" Xiao Ze suddenly said.

"But even so, this set of "Xuanhuang Secret Power" still cost me a lifetime of hard work, I spent eight years to improve the first five layers of this set of secret techniques, in order to find the elixir spirit object to prepare the quenching spirit liquid, it took more than twenty years, and then it took another ten years to successfully cultivate the first five improved secret methods, then I found out that I was already old, and there was not much time left, thinking about the past, it was really worth the loss. Recalling the past, Yang Yi was full of emotion.

Xiao Ze had heard his father talk about Yang Yi before, and from his father's words, Xiao Ze knew that Yang Yi was also a talented person when he was young, and he reached the realm of the three uniques of qi refiners at the age of eighteen, but later after he got this set of "Xuanhuang Secret Power", he studied it painstakingly and devoted himself to this set of body refining secret methods, so that he wasted his cultivation, which made him now more than seventy years old, and he has not surpassed the four realms of foundation in qi refining and cultivation.

With the potential that Yang Yi showed when he was young, as long as he seriously cultivated the True Qi Technique, it would not be difficult to achieve today's achievements, and even if he hadn't wasted Qi refining, I am afraid that his achievements would be even higher than today, but when he woke up from "Xuanhuang Secret Power", it was too late, just like Yang Yi himself said, the gains outweighed the losses!