I have a wizarding world

The red walls of the Seven Stars Commerce Guild still appeared solemn and dignified, but in Fang Cheng's eyes, that red was likely stained with the blood of many.

"I'm looking for your manager."

This wasn't Fang Cheng's first time entering and exiting the Seven Stars Commerce Guild, and he was already familiar with the route. A shop assistant heard Fang Cheng's instructions and immediately bowed, scurrying away.

A moment later.

A middle-aged man wearing a gray embroidered robe walked over unhurriedly. Although this wasn't Fang Cheng's first time seeing this man, he had never interacted with him before.

"Sir," the manager greeted Fang Cheng with a hand over his chest. "I am a senior manager of the Seven Stars Commerce Guild. You may call me John."

"Fang Cheng," Fang Cheng returned the greeting, speaking aloud.

"I wonder what you are looking to purchase from our guild, sir? Or perhaps what goods you wish to sell?" John's eyes held a question. Fang Cheng's appearance seemed somewhat familiar, but he couldn't recall where he had seen him before.

"I would like to purchase some Demonic Blood from your guild. I wonder if you have any in stock?" Fang Cheng's tone was calm, revealing no emotion.

As expected, upon hearing this, John's expression instantly turned from relaxed and casual to extremely solemn.

"Sir Fang Cheng, our guild does indeed have Demonic Blood, but the price..." John paused, "...is quite expensive."

"How many gold coins are needed?" Fang Cheng wasn't surprised. He wasn't a newbie who had just arrived in this other world. He had already learned about the prices of these materials before coming to the Seven Stars Commerce Guild.

"Ten thousand gold coins per barrel," Manager John said slowly, holding up one finger.

Sure enough, Fang Cheng sighed inwardly upon hearing this. Demonic Blood was too cheap.

That's right, it was cheap. How much did the Mello Potion cost? A mere small test tube cost Fang Cheng 3,000 gold coins when he bought it before. And now, a barrel of Demonic Blood only cost 10,000 gold coins.

How much was in a barrel of Demonic Blood?

When Fang Cheng saw John order someone to bring it to him, Fang Cheng took a deep breath.

The sealed wooden barrel before him, although he didn't know what kind of wood it was made of, emitted a fragrance. The outside of the barrel was coated with a layer of patina to preserve the Demonic Blood for longer.

If this wooden barrel was filled, it could probably hold 5L of Demonic Blood. How much was in a test tube of Mello Potion? At most, 50ml at most. Calculating it this way, if all the Demonic Blood in this wooden barrel was made into Mello Potions, it could almost make 100 of them, which would be equivalent to 300,000 gold coins.

Of course, this was an idealized state. In reality, an ordinary wizard apprentice would be lucky to succeed once out of a hundred attempts when concocting the Mello Potion for the first time.

The concoction of the Mello Potion didn't even require any special techniques, just mastering the proportions and the timing of mixing the solutions, but this obviously required a huge price for a novice.

None of this mattered, the most important thing was the lack of a recipe.

The price to pay for developing a potion recipe was almost unimaginable for ordinary people, so the resources and wealth that could be obtained after possessing a recipe were naturally beyond the imagination of ordinary people.

This was actually very similar to intellectual property rights on Earth, except that this world had a more thorough monopoly on intellectual property rights. No wizard would leak the potion recipe that they had painstakingly experimented with at great cost.

The recipe was the key to a pharmacist's wealth, and it was also their most valuable asset. Fang Cheng could almost be certain that Viscount Morton possessed the recipe for the Mello Potion.

In fact, it was very likely that he himself was a pharmacist.

After paying Manager John ten thousand gold coins, Fang Cheng obtained the Demonic Blood as he wished.

Next, it was time to concoct the Mello Potion.

Inside Fang Cheng's manor castle.

Fang Cheng dismissed the servants and locked himself alone in the room, then took out the four materials for concocting the Mello Potion one by one.

"Record data."

Fang Cheng ordered the intelligent learning machine in his mind.

As Fang Cheng's instructions were issued, the four materials were recorded into the intelligent learning machine. Fang Cheng checked the database, looked at the detailed introduction of the four materials, and nodded.

So, next, I will learn how to concoct the Mello Potion in the virtual learning space, Fang Cheng thought to himself.

Inside the virtual learning space.

At this time, the virtual learning space had completely changed its initial appearance. If an ordinary Earthling came over, they would find that it had become a modern chemical laboratory, filled with various glassware and equipment for processing materials used in chemical experiments.

The first step was to completely extract the juice of the Ghost Mask Flower.

The Ghost Mask Flower, as the name suggests, was a rather ugly flower. The petals were generally black, and upon counting, there were a total of six petals. Therefore, the Ghost Mask Flower was also known as the Six-Petaled Ghost Mask Flower, famous for its ugly appearance.

But what ordinary people wouldn't think of was that it was actually an indispensable material for concocting the Mello Potion.

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Fang Cheng carefully followed the steps indicated in the data, but a full ten times, the extracted Ghost Mask Flower juice was all unqualified, either the concentration was too low, or there were too many impurities.

This was still the result of Fang Cheng opening a cheat in the virtual learning space. If it was in reality, Fang Cheng didn't know if he could succeed once out of a hundred times.

However, this was only the first step in the concoction. There were still three materials to be processed, and finally, they had to be mixed. Every step inside could not go wrong, otherwise, the consequences would be a slight excess of negative energy index, and a serious end would be the scrapping of the potion.

Fang Cheng wiped the sweat from his forehead.

Again!

Time flowed by second by second in Fang Cheng's constant experiments.

Three hours passed in a flash, Fang Cheng's mental strength was exhausted, and he fell into a gorgeous coma.

The next morning, Fang Cheng woke up, instructed the servants not to disturb him, and continued to study. In the three hours yesterday, he had already progressed to the third step.

But every time, he failed at the step of fusing the purification liquid. Fang Cheng composed himself and prepared the purification liquid again.

Fang Cheng looked at the three test tubes with the processed material solutions lying quietly in them and took a deep breath. His right hand had become extremely stable in the countless potion concoction processes.

Fang Cheng didn't know how difficult it was for an ordinary person to concoct potions, completely relying on hand operation, unlike those wizards, who had the ability to release mental strength, and could accurately operate every step.

But even so, if the success rate of wizards concocting potions could be one-tenth, that would be considered burning incense.

This showed how difficult it was to concoct potions, not to mention the more difficult research of potion recipes, the resources and time spent were simply massive.

Until the third day.

Inside the virtual learning space, after Fang Cheng picked up a test tube with a liquid that looked like flowing rubies, he almost wanted to cry.

The Mello Potion with a negative energy index of 0 was finally successfully concocted by Fang Cheng. This potion also had another name among pharmacists, called a perfect-grade potion.

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