In Wu Qingxuan's thoughts, the Soul Seal Master's laboratory must be messy, with various materials and utensils scattered all over the place, but after pushing open the door of the Danqiu Laboratory, Wu Qingxuan found that his idea was wrong.

Danqiu's laboratory was not messy at all, and it was much larger than he expected, the laboratory in front of him was at least more than a hundred square meters, and it was full of all kinds of strange instruments, which seemed to occupy the entire laboratory in an orderly manner, some of which were emitting faint smoke from the outside, and some liquids could be seen flowing slowly in the transparent pipes of these instruments.

On the roof of the laboratory, several rows of glowing stones are inlaid, illuminating this huge underground laboratory as bright as day, Wu Qingxuan knows that these glowing stones, called moonstones, are expensive, one is enough for ordinary people to use oil lamps for several years.

Following his gaze, Wu Qingxuan saw some stacked materials in a corner of the laboratory, these materials were scarce in quantity, and they looked very fresh, they should have been taken out by Danqiu just now.

Next to this pile of materials, Danqiu was sitting in front of a table full of various books at this time, looking at a book in his hand, and when he saw Wu Qingxuanji coming in, he hurriedly put down the book in his hand and walked over.

"Qingxuan, you are here, the teacher will take you to visit the laboratory first, don't look at this laboratory is so big, it is actually much simpler than you imagined, you must know that the teacher is very poor, and those rich soul sealers have their own soul towers. ”

Hearing this, Wu Qingxuan pulled the corners of his mouth slightly, everyone knows that the Heavenly Soul Continent Soul Seal Master is a group of rich people, and those who can take out tens of thousands of gold soul coins at will are still poor?

However, during this period of time, Wu Qingxuan also learned a lot about the soul seal master, and knew that the soul seal master was rich, but the usual expenses were also large, and any kind of material was dozens of hundreds of gold soul coins, and no matter how much money there was, it was not enough to spend.

And his teacher Danqiu, who is really a poor person in the soul seal master, Wu Qingxuan knows this very well, the soul seal masters who usually have a little ability in the Heavenly Soul Continent have built their own soul towers, which are extremely well-equipped, and they also hire many assistants to help, which is like his own teacher lives in an old house, and the laboratory is still underground, there is no assistant, only an assistant who does not have the qualification of a soul seal master.

Taking Wu Qingxuan on a tour of the laboratory, Danqiu pointed to something with a strange shape and said, "This is a still, used to extract the essence of herbs. ”

With that, Dancho pointed to something even more strange.

"This is an ore processing machine, which is used to refine the essence of raw ore and to grind ore. ”

Following behind Danqiu, Wu Qingxuan nodded while looking curiously, the equipment pointed out by his teacher, these devices have strange shapes, each of them has its own function, and Wu Qingxuan is a little messy

After visiting the laboratory, Danqiu began to officially teach Wu Qingxuan.

Sitting in front of a table in the laboratory, Danqiu took out a piece of paper, put it in front of Wu Qingxuan, and said, "This is your course this month. ”

Taking the piece of paper, Wu Qingxuan looked down and found that it was densely written, lined with various courses, many of which he had never heard of, for example, the understanding of the material caste, the commonality of different soul powers, and the rejection of the nine major castes.

Raising his eyebrows, Wu Qingxuan looked at his teacher weakly, and said in surprise: "Teacher, there are so many courses." ”

"Huh. Not much, not much, this is just your first course, I will see your performance in the future and increase it appropriately. Sitting on the chair, Danqiu smiled slightly, and there was a hint of success in his eyes.

"Okay. Nodding, Wu Qingxuan put down the paper in his hand, looked at his teacher energetically, and said excitedly: "Teacher, then let's start." ”

Seeing Wu Qingxuan's strong motivation, Danqiu was slightly stunned, and then smiled happily, he just liked Wu Qingxuan's end of never admitting defeat, got up and said, "Okay, let's learn the purification of green leaf grass first." ”

Walking to the side of the still, Danqiu took out a few green leaf grasses, cut them with scissors, and put them into the container above the still, then closed the lid and said, "Qingxuan, do you know why the primary soul seal material that the teacher bought in Nord City is a raw material, not a finished product?"

Looking at Danqiu's movements, Wu Qingxuan's heart moved slightly, and said, "Teacher, you want to cultivate my material purification." ”

"Yes, you will experience a lot of things in the future, not every soul mark production can be completed in the laboratory, I need you to complete the soul seal production no matter where you are, even if there are no materials, you must purify the materials to complete the soul seal production, so that you can become a real soul seal master. Danqiu said as he taught him how to extract the green leaf grass.

The disciple remembered. Staring intently at Danqiu, Wu Qingxuan carefully remembered his every move, the purification of materials seems simple, but the essence is quite knowledgeable, the purity of the materials is not enough, and the purity of the materials is too high, which can lead to mistakes in the process of making soul seals, which will lead to the failure of making soul seals.

Therefore, the stable effect of materials is also closely related to the production of soul seals, and every soul seal master must learn to distinguish the purity of various materials, because the materials sold by others do not all meet the requirements of soul mark production, and there are many black-hearted businessmen who tend to pass off inferior products as good, thus improving the failure rate of soul seal masters and soul seal production.

"Aoki, the surname of the wood, this teacher doesn't need to say much, but it also has a characteristic, that is, it has a very high neutralization surname, which can neutralize some primary materials with a very manic effect, such as the blood of the Aoki Beast, because it is the blood of the beast, which has a manic quality, and can be neutralized with the essence of the Aoki Grass, so that the blood of the Aoki Beast becomes gentle, you remember this. Looking at the slow-flowing green leaf essence in the still's pipes, Danqiu said.

"Yes. Nodding, Wu Qingxuan hit himself in his heart.

A few minutes later, the purification process of the green leaf grass was completed, Danqiu clapped his hands, handed a few drops of the essence of the green leaf grass in the container, handed it to Wu Qingxuan, and said: "This is the purified green leaf grass essence, it will be used when making a product of agile soul seal, okay, you try it yourself." ”

Stretched out his hand to take the essence of the green leaf grass, and looked at it a few times, Wu Qingxuan nodded, and began the first material purification in his life, reaching out and taking out a few green leaf grass from the side, Wu Qingxuan learned from Danqiu's actions just now, and began to purify the green leaf grass.

A moment later, Wu Qingxuan's first material purification failed.

Danqiu looked at Wu Qingxuan and said, "Do you know why it failed?" Because you don't know the structure of the green leaf grass at all, its sap, rhizome, and trunk all have different layers of content. ”

"Huh" glanced at his teacher a little embarrassed, Wu Qingxuan exhaled a breath and started the second purification of green leaf grass, and not long after, he announced the failure of purification, gritted his teeth Wu Qingxuan, and began the third green leaf grass purification.

"Not enough temperature"

"Boot too slow"

"Concentration, when the green leaf grass melts, you start purifying"

"Well, the still didn't turn on this time. ”

Danqiu's voice kept sounding in the laboratory, Wu Qingxuan felt more and more sweat on his forehead, he didn't expect to purify a material, it was so painful, gritting his teeth Wu Qingxuan had a paranoid look on his face, and began the twenty-sixth green leaf grass purification.

"I don't believe it's over. ”;