Lin Sen immediately ignored this person, and instead quickened his pace and walked towards the living room. [Ran^Text^Library] []

"That's not how the elixir is refined!" At this moment, Lin Sen's heart moved, and he suddenly looked at the old man on the big tree again. It's just that this time it's still the same as last time, and the old man has disappeared.

Lin Sen frowned slightly, he had just heard the old man's divine sense, but he didn't know what this person meant by saying this.

With doubts, Lin Sen returned all the way to the second grade house in the front yard, and after entering the courtyard, there was no change in it, and the prohibition he set before leaving showed no signs of being touched.

After returning to the courtyard, Lin Sen groaned a little, took out the Puhan furnace and started his alchemy career again.

Time passed slowly, and in a flash, it turned into months.

Liu Yunshan's retreat was not over, and in the past few months, Song Fang had visited Lin Sen once. That time, Song Fang came over to express his gratitude, and in addition, he also told Lin Sen some of his alchemy experience.

Lin Sen's alchemy has made great progress, but he may not have much talent for alchemy, since he saw Li Ji's alchemy process, he relied on the gourd to draw a scoop, according to Li Ji's method, in the last step of Cheng Dan to control the earth fire to the maximum, even so, he still failed more than eighty times before he successfully mastered the control of the earth fire. Moreover, this is still refined under the superior conditions of having a five-grade Dan furnace and a Puhan furnace, if it weren't for this, Lin Sen would have destroyed many Dan furnaces in the past few months of alchemy.

From then on, he began to refine the pill according to some of the pills recorded in the jade slips, and the pills recorded in the jade slips of Liu Yunshan had a spiritual pill all over his body. As for the Song family's Danfang, Lin Sen hadn't learned that level at all.

Fortunately, there are abundant herbal resources in the medicine garden, and using these herbs, Lin Sen tried them one by one, but the failure rate of alchemy was too high, almost every ten times, only one or two successes, and even one time when they were unsuccessful.

If it goes on for a long time, no matter how many medicinal herbs there are in this courtyard, it can't afford to squander it like this.

Now, many of the herbs for refining the pill had been exhausted, and Lin Sen had almost run out of food, and it was already difficult to concoct the pill.

Lin Sen hesitated again and again, and decided to go to Song Fang's medicine garden to ask for some herbs, after all, Song Fang's alchemy was already able to refine the four-grade Ning Tian Pill, although it was the only refining on the basis of having a Puhan furnace. But for the refining of the second-grade and third-grade pills, Song Fang is naturally not a problem, so Lin Sen feels that Song Fang's medicine garden should be kept intact.

Since Song Fang directly became a disciple of the cabinet, his residence was also a second-grade residence, and the specifications were the same as Lin Sen's.

Walking out of the gate, he walked according to the direction Song Fang said. Because the Dan Shengzong is too large, and in addition to the first-grade residence, it is the most second-grade residence, and the rows of branches are in the east, west, north and south of the front yard.

Song Fang's location is the North Courtyard, while Lin Sen's location is the opposite, the South Courtyard. In this way, this is a long journey.

Lin Sen walked, he hadn't gone far, his heart moved, and an old voice came from his divine sense again: "Little baby, the old man has been observing you for several months, although you have a good Dan furnace, but you don't know how to use it, and you are blind to the herbs of the garden." ”

"Who the hell are you!" Lin Sen thought in his heart, he had been watched by people in the past two months, but he didn't realize it, if the other party had bad intentions, he would definitely die.

"Little baby, don't get excited, if the old man has any malice, can you still live? Forget it, the old man doesn't want to meddle in things, but according to your method of alchemy, I'm afraid I won't be able to refine a second-grade pill in three years, hehe"

Lin Sen's mind turned, he felt that this person should have no evil intentions, and from his words, it could be seen that this person might have another opinion on alchemy.

"Junior Wu Mu, please give me advice!" Lin Sen said respectfully.

"I can't talk about pointing, if you're interested, come to Houshan!" the man said, and then he didn't respond.

Lin Sen was silent for a moment, and decided to go to the back mountain to meet this sloppy old man. He soared into the air and flew straight towards the back mountain at a very fast speed, during which he passed a strange building complex floating in the middle of the pavilion in the east courtyard, where from time to time there was a song of the song and swallow language, which was the sound of a beautiful woman frolicking, Lin Sen glanced at it, and then bypassed it from a distance, because he found that in the sky above this place, there was a faint fluctuation of prohibition, and it was obvious that outsiders were forbidden to approach here.

Lin Sen didn't stop and flew straight towards the back mountain. Soon, a verdant bamboo forest appeared in front of his eyes, his consciousness swept away, his body did not stay but continued to go deeper, along the way, Lin Sen found that there were a lot of spirit beasts that disappeared in a flash, but these did not attract Lin Sen's attention, he didn't know where the old man was, only to move on.

Until Lin Sen faintly heard the sound of gurgling water, he subconsciously followed the direction of the sound source, and after a while, his eyes suddenly opened up, showing in front of him is a place of high mountains and flowing water, green shade and grass blanket, where the aura is strong, and many small beasts shuttle among them, quite a sense of paradise.

Lin Sen was not attracted by the scenery in front of him, his eyes flashed, and he found that on the high mountain, next to the flowing water, there was a cave, and there were bursts of light smoke coming out of this cave, blending with the water mist, making it impossible to distinguish which was the water mist and which was the light smoke.

Lin Sen flew towards the cave, and soon, he came to the cave, a wave of danxiang and heat rushed to his face, Lin Sen saw at a glance that inside, the sloppy old man, sitting motionless by the Dan furnace, did not see any movement from him, but from time to time, he muttered something in his mouth.

Lin Sen didn't speak, he was afraid of disturbing this person's alchemy, but sat cross-legged outside the cave, carefully observing the Dan furnace in front of him.

This Ding Dan furnace is about a few zhang high, and the whole body is red, Lin Sen knows that this is generally caused by the burning of the earth's fire. But he was surprised to find that there was no earth fire burning under the Dan furnace, so there was only another explanation, this person used supernatural powers to increase the temperature of the Dan furnace to achieve the purpose of alchemy.

Of course, whether it is supernatural power or earth fire, as long as it can reach the temperature of alchemy, it is feasible.

In this way, after the time of the three incense sticks, Lin Sen always paid attention to the changes in the Dan furnace, and he found that the color of the red Dan furnace changed from time to time, and the red mangs were sometimes dull and sometimes rich.

On the other hand, the old man always crossed his knees and closed his eyes, until the sound of his muttering appeared, the crimson on the Dan furnace due to the temperature would become more intense, and when the sound of muttering was gone, the crimson would become dim. And the change of color will only appear at this time, for this, Lin Sen is puzzled.

"Could it be that this is a way to control the temperature, the sound of muttering can raise the temperature, once the sound disappears, the temperature will drop immediately, this is nothing special" Lin Sen thought inside, his eyes never left the Dan furnace.

Suddenly, a strange voice came from the sloppy old man, Lin Sen immediately looked at the old man, and at this look, Lin Sen was almost angry to death.