Hehe, okay, okay, I'll arrange it for my junior brother!" The ugly man saw that Lin Hao had given him a middle-grade spirit stone, and his heart suddenly burst into joy. You must know that although it is said that one hundred low-grade spirit stones are exchanged for one middle-grade spirit stone, it is the recognized exchange rate in the immortal cultivation world. But in fact, there are very few people who are willing to exchange mid-rank spirit stones for low-rank spirit stones.

Because everyone knows that under the same circumstances, the speed at which a middle-level spirit stone can absorb the aura is much faster than that of a low-level spirit stone. With this alone, everyone wants to keep a mid-level spirit stone, and naturally they don't look down on the low-level spirit stone.

Of course, the same is true for the exchange of high-level spirit stones for middle-rank spirit stones. After the ugly man took this fire attribute spirit stone with a smile, he was even more attentive to Lin Hao. He immediately led Lin Hao to the huge stone gate, and took out a token from his bosom, aiming at the stone gate for a while.

The red light on the token flashed, and a ray of glow flew out from it, hitting the door accurately, and immediately making the light on the stone door turn rapidly. As a result, after a few loud "creaks" and "creaks", the stone door slowly rose, revealing a black passage behind the door. This passage is a few feet high and square in shape.

Senior brother, after this stone road, it is a room with a fire, let's go over now! The ugly man squeezed out a few smiles, and said to Lin Hao flatteringly. Lin Hao nodded noncommittally and walked into the passage first.

In this way, Lin Hao followed behind the ugly man, and in the blink of an eye, he passed through two other stone doors that were also tall. Finally walked out of the passage and appeared in a large rotunda.

This hall is made of dock stone. But the diameter is forty or fifty zhang, and the height is more than ten zhang, which is really huge and shocking! Around the hall, there are white stone doors of the same size evenly distributed, and there are more than 30 rooms.

At this time, there was no one in the hall, only the ugly man and Lin Hao, who had just arrived. After looking at it curiously. Then I heard the ugly man grinning and saying:

Below this hall, there is a gathering place where the local fire is most vigorous, so this gate has opened a total of thirty-six ground fire rooms for refining alchemy, and the best alchemy rooms are No. 18 and No. 19.

However, No. 18 has been occupied by a senior uncle, so the junior brother should use room No. 19! Although it is a little worse than No. 18, its firepower and stability are also excellent. The ugly man led Lin Hao as he spoke, walked to a door painted with two golden lacquer words "nineteen", and said with a grin.

Lin Hao listened without words, nodded silently, and agreed.

Seeing this, the ugly man immediately took out a white jade plaque and pasted it on the door. The white stone door opened automatically. Then, the ugly man and Lin Hao entered the house.

The house is a square building. The area is average, only seven or eight zhang in size, but in the center of the room there is a round platform with a width of several zhang, a fist-sized gourd is hung on each of the four walls, and there is an emerald green ground futon in the corner not far away.

The round platform is also made of dockstone, and it is very flat, only half a foot high. But on the outside of Yuandun, there are nine fiery red miniature dragon heads, which are lifelike. Moreover, the mouth of the dragon's head is slightly raised, just aimed at the air above the center of the round platform, and the spitting posture is very realistic.

After seeing the situation in the room clearly, Lin Hao was a little surprised, but before he could ask, the ugly man had already walked to the vicinity of the round platform and took the initiative to explain to Lin Hao.

"Senior brother, this is the earth fire mouth of this house, and the earth fire needed for alchemy is spewed out from these nine dragon heads. And according to the need, you can also adjust the size and height of the flame by yourself, and the specific driving method is engraved on the outer wall of the stone platform. The ugly man explained, pointing to the round platform.

But then he pointed to the four gourds on the wall and said:

"These gourds are filled with fire sand, which can strengthen the power of the earth fire, if the junior brother feels that the temperature of the earth fire is not enough, increase the power, but it will not last too long. In addition, this jade card is put away by the junior disciple himself. As soon as the door was closed, it was cut off from the outside world. Unless it is the joint efforts of several monks of the Yudan period, no one can enter from the outside, so although the junior disciple can rest assured, no one will disturb him!"

When Lin Hao heard this, he was secretly happy in his heart, such a completely closed environment was exactly what he needed, and his face couldn't help but show a little joy! At this time, the ugly man saw that the explanation was almost over, so he said goodbye and left.

Seeing the ugly man out of the house, he immediately drove the jade plate and sealed the stone gate again. Then he walked to the round platform excitedly, and after circling it several times, he carefully looked at the nine dragon heads.

In the past few years, Lin Hao has deliberately spent a lot of time studying the art of alchemy in order to refine the Zhuji Dan this time. Therefore, he is not unfamiliar with the way of alchemy. Knowing the success of the pill mainly lies in the control of the heat during alchemy, and the grasp of the time to open the furnace to take the pill.

As for the amount and quantity of raw materials put in, after countless practices of the ancestors, it has already been clear in the formula, so there is no need to consider it. Of course, it is okay to increase or decrease the number of Cheng Dan at one time. As long as the number of raw materials is increased or decreased in a fixed proportion, the same amount can be increased.

However, when it comes to simplicity, it is extremely difficult to do! Accurately controlling the heat of the Dan furnace and grasping the opening time of the furnace are these two major problems, and I don't know how many so-called alchemy masters have been stumped.

Even the most famous alchemy masters in the world had to admit that even if they took action in person, the probability of being able to become a pill would not be too high, only about half, and this was still the best elixir for refining them. So let alone other ordinary alchemists!

Therefore, whether the pill can be successfully refined depends on whether the alchemist has rich experience. The more alchemists who have alchemized more times, the greater their chances of becoming a pill. Therefore, alchemists are the two most money-burning professions in the immortal cultivation world on a par with talismans, and of course, they are also the two most popular professions.

Lin Hao also inquired about these things very clearly, knowing that with himself, a rookie, he wanted to be able to refine Zhuji Dan at once, which was purely a dream. So he planned it from the beginning, preparing to refine Tsukidan one by one!

In this way, even if he failed more times before, he would not be too heartbroken. And the amount of elixir he prepared was enough to refine more than a hundred times, and I believe that so many raw materials were enough for him to accumulate experience in front of him.

Lin Hao, who had made up his mind, wrote down the driving method of the dragon head. Then he pinched the law with his hand, and shot out nine red lights on the dragon's head in a row, and the dragon's head immediately absorbed the red light, and then the dragon's mouth opened slightly, and spewed out purple flames with chopsticks thick. Suddenly, the air in the room was filled with a scorching heat, which made Lin Hao secretly surprised.

Subsequently, Lin Hao tried to change the thickness of the flames, as well as the height of the dragon's head spray and other subtle operations, until he was able to manipulate it freely, and then extinguished the dragon's head's ground fire. Then he went to the futon and crossed his knees to recuperate.

After sitting for most of the day, I realized that my mental and physical strength were all in the best condition, and then I opened my eyes and stood up, ready to start alchemy. However, fortunately, Lin Hao's exercises have passed the tenth layer, and he can already clear the valley, so there is no need to eat.

Lin Hao took out the silver tripod he bought that day from the storage bag, and put a levitation spell on his body, making it stop directly above Yuandun out of thin air. This spell was also specially cultivated by Lin Hao for today's matter, and it took a lot of time to break it.

Because the raw materials had not yet been put into the ding, Lin Hao controlled the earth fire and made it very small, only as thick as a silk thread. Then let the silver tripod start to rotate slowly out of thin air under the preheating of the nine lines of fire.

After a quarter of an hour, the silver tripod was already hot, exuding an astonishing heat.

Seeing this, Lin Hao pointed at the small tripod, and as a result, the lid of the silver tripod immediately flew up, revealing the mouth of the tripod. With a touch of his right hand, an elixir appeared in his hand.

Controlling the elixir, Lin Hao put the elixir into the silver tripod, and then, took out another bead of elixir from the storage bag, and continued to repeat the same action. Once put into the tripod.

In this way, Lin Hao put all the dozens of elixirs he needed into the silver tripod, and finally closed the lid again. The first step was finally completed, and it seemed perfect and nothing went wrong.