In a twinkling of an eye, another five days passed.

Yang Xuan followed Xuanyu to run all the places in the chaos, and finally waited until he came back from danta.

In fact, danta is distributed all over Zhongzhou, but because the medicinal materials he wants to get this time are more valuable, and he also takes Dugu Shang, an important figure, so he directly returned to the danta headquarters in the west of Qingguo and dealt with all kinds of things before returning to the chaotic place again.

On the sixth morning, Yang Xuan was still asleep and was called by Yu Qingcheng.

Yang Xuan rubbed his bleary eyes and came to the hall of Xuanwu Pavilion, but he was very excited to see the expression on Mutong's face. Seeing this, Yang Xuan asked curiously, "elder mu, what happy event can make you so happy?"

Seeing Yang Xuan's arrival, Mutong nodded and said, "it's not my frustrated younger martial brother. After I took him back, the master put him in a good confinement. Although his concept still hasn't changed, his attitude is much better. Maybe it won't be long before he is willing to return to the normal Dan master."

When Yang Xuan heard the speech, he also said, "congratulations to elder mu, and congratulations to danta that there will be an excellent dant teacher soon."

After some polite greetings, they went straight to the subject.

When refining pills, according to Yang Xuan's idea, he had to find a place to start the furnace, but Mutong said he wanted to find a place with strong Yang Qi. After flying in the sky for a long time with Yang Xuan and long Bupo, he finally decided to go to a sand dune in the desert.

According to Mutong, when refining this barrier breaking Nirvana pill, you must have sufficient Yang Qi, otherwise you may not be able to neutralize the Yin and cold medicine in ziyuluo.

On the sand dune, Mutong set up a black and purple Dan stove and proudly said to Yang Xuan: "Look, little friend, my Ziyang tripod is one of the top Dan furnaces in the world of Dan masters, especially the ability of heat preservation. My master tried that year. After the end of alchemy, he covered the furnace and put it in a deep well. After being flooded by the well water for a year, he took it out again. After opening the cover again, he can still feel the heat coming from it."

"Oh? And such a thing?" The description of Mutong surprised Yang Xuan immediately and couldn't help looking forward. The Dan stove was black and purple, and it was still red in the sunshine. Yang Xuan put his hand on it, and the sea could feel a slight heat.

There is a ring of fist sized holes on the left and right sides of the Dan stove, which is used for breathing. However, generally, this place is sealed and can only be opened when alchemy is needed. Then the Dan master will inject spiritual power into it and generate a flame by himself.

Of course, the alchemist can also turn his spiritual power into a flame and inject it into it to refine the elixir.

After looking at the danfang, Yang Xuan also had a general understanding of the process of alchemy. Although the current Danshi has a variety of patterns and names, in the final analysis, it can not be separated from a process.

Extract the components of medicinal materials in the Dan furnace or in the Dan furnace and fuse them together.

Of course, there are many things to pay attention to. It takes years of experience to accumulate the degree of refining, the order of integration, and when to add the next herbal medicine.

But these have nothing to do with Yang Xuan. All he has to do is help Mutong make a fire.

After adding the Dan stove, Mutong looked at Yang Xuan, picked his eyebrow and asked, "little friend, my Dan stove has 16 tuyeres. How many can you control?"

"What's the difference?" Yang Xuan looked at Mutong and asked puzzled.

"There's a big difference. Every time you can control one more air vent, the temperature you can reach will be higher, and there will be more medicinal materials that can be refined at the same time. This Dan stove has been with me for a hundred years, and now I can control up to eight air vents at the same time, which is the top among monks." Mutong explained to Yang Xuan.

Yang Xuan nodded, sat in front of the Dante stove, pressed his hand on an array specially used to inject spiritual power under the Dante stove, and began to try according to the story of Mutong.

Mutong stood beside Yang Xuan and observed quietly. Of course, he did this for a purpose. Only by knowing Yang Xuan's strength can Mutong better decide the steps of alchemy. Otherwise, if Yang Xuan's strength can't keep up at the critical moment of alchemy, the consequences will be very serious. At least a furnace of medicinal materials will be destroyed, and at least the connected furnace will explode.

Of course, the Ziyang tripod of Mutong will not explode easily after being reinforced by layers of spells, but it is enough to make Mutong feel distressed once the medicinal materials are destroyed.

The spiritual power in the body flows out of the Qi wheel and is divided into two. The spiritual power of the ternary pure formula dissipates, while the spiritual power of the Liyan formula appears in the palm of Yang Xuan's palm, and then enters the Dan furnace to light up the air outlet.

The tuyere lit up one by one. When it lit up to the fourth, a look of surprise appeared in Mutong's eyes.

In those years, he was selected by his master from thousands of people who wanted to study in danta, which was enough to prove his talent. Even so, when he first tried to light the tuyere of the Dan stove, he only lit four.

And Yang Xuan can be as many as him.

But it's not over yet. After the flame comes out of the fourth tuyere, the flame in the fifth tuyere stabilizes from the shaky state.

"Tut Tut, your mental strength is good. It's a pity that you didn't become a Dan master with me." Mutong stroked his beard with his hand and sighed.

Spiritual power and realm are not important to Dan master. Unless there is a medicinal material in the refined pill that is very difficult to refine, it will take Dan master to light the flame with spiritual power for a long time. However, in this case, Dan master can also use the help of others to achieve his goal.

On the other hand, mental power is what the alchemist needs most. When alchemy, the alchemist often needs to be able to accurately know the situation of each part of the furnace, and then decide what to change. If mental power is insufficient, it is very likely to fail in alchemy.

Although Mu Tong's strength now is only in the middle of the sixth realm, his spiritual strength is equal to that of the monks in the later stage of the eighth realm.

Mutong looked at Yang Xuan curiously. The light in his eyes twinkled. He wanted to know how many tuyeres Yang Xuan could hold until he failed. Now Yang Xuan's strength is at the beginning of the seventh realm. In his impression, the spiritual strength of this powerful monk is at most enough to control six tuyeres.

During the period when the thoughts in Mutong's heart surged, the sixth air outlet also lit up immediately after it, and in Mutong's surprised eyes, the flame in the seventh air outlet was also constantly flickering.