In a classroom on the second floor of the No. 1 Teaching Building, by the window, Lin Luowen was listening to a section on pharmacy.

"The energy substances extracted from herbs and ordinary beasts are relatively more friendly to the properties of water, and their compatibility and adaptability are better, so most of the yellow grade agents are used as solvents. The extraction of substances in spirit grass and demon beasts requires secret methods, which can be extracted by running Yuan Force and secret methods, and then mixed with water containing Yuan Force or some special liquid substances through some secret methods and techniques. The advantage of the potion is that it is easy to be absorbed by the human body, improving the utilization rate of substances such as spirit grass and demon beasts, and the production time will not be too long. The disadvantage is that the substances in the medicine are not pure enough, mixed with various substances, some substances have reacted through secret methods, and the remaining small substances that are difficult to be sieved out are easily poisoned after being absorbed by the human body, and this toxicity takes a period of time to recover. The mainstream use of spirit grass in the Franco-Austrian alliance is pharmacy. In the Terence Khanate, they lived in areas where most of them were grasslands, and there were quite a few medicinal herbs in the grasslands, but spirit grass was rarely seen. Only in some high mountains of the Terence Khanate can you see some spirit grass, these spirit grass is quite scarce in quantity, and the quality is also high, so the people who can get the spirit grass are generally powerful people, and their use of spirit grass is through alchemists to refine pills. It takes a long time to refine the elixir, the impurities contained in it are more rare, and the utilization rate of the spirit grass is higher, and it is said that the alchemy is inherited from the Eastern Continent......"

In the cultivation department of the Eight Desolations Imperial Beast Sutra, there are also some refining methods for pills, but refining pills requires a high-grade pill furnace. However, the exchange point price of a Xuan-level Dan Furnace is 200,000 Battle Points, which is twice the highest price of 100,000 Battle Points in a Xuan-level weapon.

Today is Sunday. Sitting next to Lin Luowen was Odette, who was wearing a straw-colored summer dress, revealing a white calf, her dark brown hair tied up, and some insteps and toes could be seen peeking out of her sandals. Looking from the side, you can see slightly upturned lips on the innocent face, some long curved eyelashes, a thin and fair neck, and a little Adam's apple.

The teacher on the stage is a prefecture-level pharmacist, she is wearing a meticulous uniform, a pair of glasses, and there is seriousness and coldness on her face.

After talking about some theoretical knowledge about pharmacy, Ms. Loren started some of her pharmacy demonstration experiments. She did a total of two experiments, the first was the production of high-energy nutrient potions, and the second was the production of Xuan-level low-level injury recovery liquid.

Guardian Sword University offers a dedicated laboratory for students who want to learn and make potions.

Two hours passed quietly.

"I'll go to the pharmacy lab and make some potions, what about you? Odette. Lin Luowen looked at Odette, who was sorting out her notes, and said. In Odette's notes, she mainly writes about her thoughts on the various knowledge in the teacher's lesson, for them, it is not difficult to memorize all the knowledge of the whole lesson, and the ideas are fleeting.

Odette packed up, and she looked a little interested, and said, "Okay, I want to see how you make the potion, too." ”

The two of them came to the laboratory building of the Guardian Sword University, where there are many laboratories, not only the pharmacy laboratory, but also the mineral laboratory, the monster laboratory, the botany laboratory, and so on.

Experimenting in the lab is also not free, and renting a lab for an hour costs a hundred Battle Points.

Lin Luowen rented a pharmacy laboratory for two hours, and the grade was Xuan.

The two of them opened the door of the room, and they saw a hundred-square-meter room with a white floor and a long white table. On the left shelf are a variety of tools needed to make potions, including flasks and glass containers of various styles. On the right shelf are bottles of labeled semi-finished spirit grass and herbs, some of which have undergone some processing and some have not been processed, and the secret method of slowing down the loss of medicinal properties has been performed. There are also some meat, bones, furs, and ores from monsters.

Naturally, these things are not free to use, and each item used will automatically deduct the battle points recorded in the badge. A low-level spirit grass is fifty battle points, an intermediate level is three hundred battle points, and a high-level spirit grass is two thousand battle points.

At the beginning, Lin Luowen made a yellow-grade potion, starting with a small high-energy nutrient solution, and the liquid he made was black in color at the beginning.

Lin Luowen poured out a little, tasted it, and said expressionlessly: "It tastes good." ”

Odette had some suspicion on her face, she also drank a little, and then she quickly spit it out. He stuck out his tongue, his little face wrinkled, and said, "It's really good, it's almost going to kill me, you drink it all." ”

Both of them made some potions, and comparatively speaking, the quality of the potions made by Odette was better.

Yellow-grade potions are not difficult for either of them. Occult-level elixirs require potion recipes, which are purchased for battle points, but the price is sky-high. For example, the price of the potion formula of the Xuan-level low-level energy recovery liquid is 100,000 battle points.

There are also some records of potions in the Eight Desolations and Imperial Beast Sutras. Because the name of this low-level elixir is rather awkward (difficult to translate), it was changed by Lin Luowen to a small demon beast energy replenishment liquid, which can quickly replenish the energy in the demon beast's body.

"Odette, do you have a recipe for a Xuan-level low-grade elixir?"

She shook her head and said, "This precious thing is hidden by my father and I don't know where it is, how can I let me know." ”

"Okay. Then let me try this low-level elixir formula that I got by chance. Lin Luowen said.

Then, he picked up a piece of fourth-level demon beast meat and put it in the container, some white light appeared on his fingers, and then this large piece of demon beast meat began to melt, turning into some red viscous liquid. Raise the fire at the bottom of the container and the volume of the red viscous liquid begins to slowly shrink.

His hand didn't stop, and he put a Xuan-level low-level spirit grass called Zelan into another container, and white light appeared on his fingers again, and the spirit grass slowly dried up, and some emerald green liquid appeared. Take out the dried spirit grass, and then add some water containing Yuan Power. The production of water containing Yuan Li is very simple, as long as you inject some Yuan Li into ordinary water, you can improve compatibility.

On the right shelf, I took out a bottle of latex powder and put it in it. Next, it is to add some auxiliary extracts or powders to it, which is inconvenient to disclose because it is a secret formula.

After the volume of the red viscous liquid has been reduced to a certain level, the red viscous liquid is poured into a container with added water, and after a series of stirring and mixing, using a secret method. Under the influence of the secret method, it was allowed to sit and settle for two minutes, and then a beaker of gray-green liquid appeared in front of the two of them, and there was still bubbling on it.

Lin Luowen and Odette glanced at each other, she swallowed her saliva, pointed to the gray-green liquid in the container, and said with a smile: "This is what you call a Xuan-level low-grade elixir?" ”

Lin Luowen poured the liquid from the beaker into the reagent tube.

After smelling it, there was a strong fishy smell, which should have been a failure in production.

"Well, failed. Let's do it again. Lin Luowen said helplessly.

I did the experiment again, and this time the potion was in better condition, with some red in it and didn't smell that bad.

After the fifth time, Lin Luowen finally made a bottle of bright red elixir, which smelled a little fishy sweet and floral. He pinched the bottle of reagent in his finger and looked at it in the sun, although it seemed to have some impurities, but it should be barely successful.

"Brother Lin Luowen, what kind of potion is this? Can you teach Odette? Odette asked pitifully.

"This is a low-level demon beast energy replenishment liquid, which can replenish a large amount of physical energy and yuan power for fourth-level demon beasts. If you want to learn, I can teach you on the condition that you don't tell anyone about the recipe and its origin for five years. Lin Luowen said.

"I agree. In the future, if you get the Xuan-level low-level formula, I will share it with you. Odette said, with joy in her eyes.

Subsequently, Lin Luowen handed her the recipe for making the potion.

Two hours passed quietly. Lin Luowen finally made ten bottles of small demon beast energy replenishment liquid. A total of 1,650 Battle Points were spent, and he still had 32,000 Battle Points left.

When I came out of the pharmacy lab, it was already noon.

The two went to the second floor of the No. 1 cafeteria to order some food, and they hadn't eaten in the school cafeteria for a while, and the number of first-year students in the private room on the second floor of the cafeteria had also increased.

Say goodbye to Odette. Back in the apartment, Lin Luowen opened the fresh-keeping cold box, took out some jacaranda snow beef jerky and ate it, feeling a little full.

For more than an hour in the following year, Lin Luowen sat in the quiet room and continued to comprehend the Soul Attraction and the Beast Seeking Channel, and he should be able to comprehend and comprehend it by tonight, and then he could use these two secret methods.

The use of the life soul guide requires some demon beasts to do experiments, and the beast hunting guide can be used directly.

In the afternoon, Lin Luowen went to the first practical training session of the week.

There are more than 70 people in today's class, which is quite a lot, and the actual combat training teachers usually start classes on Thursdays and Sundays.

Colonna, who had blue-black hair, saw Lin Luowen and nodded at him.

Constantine, Skadi, Annele and Maias were also there, and they met and said hello.

"Students, this week's task is quite challenging. However, the future wars will be much more brutal than that, and perhaps you will face an eighth-level Sky War Division or an even more formidable enemy. And these words must have been pondered in your hearts. Well, the next combat training session begins. Lin Luowen, out of the ranks. Colonna said.

The sun is shining on the outdoor training ground of Guardian Sword University, and the students are growing step by step......