Inside Kamar-Taj's training room.

“In our world, a sorcerer’s power primarily comes from demon gods of other dimensions. Through persistent meditation and training, we enhance our spiritual strength, allowing our minds to gradually establish a connection with high-dimensional deities that transcends the physical body.”

“This connection allows us to borrow energy from them, and it also helps us absorb power from other dimensions, using a unique method to influence and manipulate our surroundings.”

“Besides this method, we can go a step further and sign contracts with dimensional demon gods. For example, by signing a contract with the Vishanti, we can obtain even greater power from them.”

“However, when signing contracts with dimensional demon gods, one must be very careful and wary of unknown dimensional demon gods, or those who claim to have just been born or awakened. Because you never know if other demon gods are behind them, or if they are just a new alias of some old monster.”

“As far as I know, Mephisto, the lord of the Hell dimension, loves to impersonate unknown deities to deceive novice sorcerers, granting them a small favor and having them sign contracts, only to harvest their souls after their death according to the contract.”

“So, when an unknown dimensional demon god says they are actively bestowing power upon you, you must remain vigilant, and especially wary of any decorative patterns that look like mere ornamentation on the contract they produce.”

“It's entirely possible that those beautiful, thorn-like decorative patterns are actually some mysterious, unknown script. When you sign the contract, you are agreeing to the terms written there, and thus stepping into the trap they have laid.”

Wang took out a sling ring, put it on his hand, and drew in the air with both hands, a golden, complex magic circle appearing before Chen Yu.

“A sling ring is crucial for helping a sorcerer stabilize their magic and cast spells. It is extremely important in our spell system.”

“We usually can’t cast spells without it.”

Chen Yu understood this; a sling ring was to a sorcerer what a wand was to a wizard.

Unlike a wand, a sling ring was not picky about its user and did not require a sling ring to be specially made for a sorcerer.

Wang informed Chen Yu about the source of a sorcerer’s power in this world and the precautions to take when signing contracts with dimensional demon gods.

At the same time, he began to demonstrate Kamar-Taj’s energy projection magic.

Chen Yu listened to Wang’s explanation, recalling the book’s introduction to borrowing magic from dimensional demon gods.

Dark, truly dark, it was far too dark.

Even usurious loans with exorbitant interest rates looked much better than the loan contracts of these dimensional demon gods.

Rolling interest and compound interest were mere child’s play in the contracts for borrowing power from dimensional demon gods.

The kinder ones, like the Vishanti, would require you to return one and a half times the power you borrowed from them.

As for Dormammu, the ruler of the Dark Dimension, if you borrowed power from him, he would say you didn't need to repay it, but you would have to serve him for all eternity.

And Mephisto, the lord of Hell, if you borrowed his power, you would have to pay back usurious loans for him while alive, and your soul would belong to him after death.

Sorcerers only coveted a portion of a dimensional demon god’s magic, while the dimensional demon gods coveted everything the other party possessed.

To describe the gluttony of these dimensional demon gods, even phrases like “eating them completely dry” and “extracting marrow from their bones” would be insufficient.

After understanding how sorcerers in this world borrowed power from dimensional demon gods, Chen Yu completely abandoned the idea of using their energy to increase his magic pool’s upper limit.

“What I’m demonstrating now is energy projection, the most basic spell. We usually use mental power to make it appear in the form of a magic shield. It can help us defend against external attacks, and it can also be used to enhance our hands or weapons, like this.”

Wang extended one hand, made a fist, and fixed the magic shield onto his fist.

Then he punched the wooden stake used for demonstration, and the stake was easily broken by Wang’s punch.

Patting away the splinters that had splashed onto him when the stake broke, Wang continued, “This magic shield is called the Raggadorr Rings. Its basic color is yellow, and as more magic is invested, the color gradually deepens, eventually reaching red, which has the highest strength.”

“I’ll fix two colors of the Raggadorr Rings onto the stake. You can use your world’s magic to attack this magic shield and test its durability.”

With that, Wang waved his hand at another intact wooden stake, and the magic shield was applied to the bluestone pillar, allowing Chen Yu to attack the magic shield with magic from his world.

Chen Yu pulled out his wand and cast a Sectumsempra at the magic shield.

The invisible spell collided with the yellow magic circle.

Chen Yu heard the sound of the magic shield quickly shattering; the yellow magic shield could not withstand a single attack from Sectumsempra.

Then he used Sectumsempra again to test the red magic shield. Although the red Raggadorr Rings flickered continuously, it successfully withstood Chen Yu’s Sectumsempra.

Seeing the still relatively intact red Raggadorr Rings on the stake, Wang subtly wiped the sweat from his forehead with his arm.

“To be able to shatter the yellow Raggadorr Rings with one hit, and it’s colorless, formless, and soundless—that’s a very difficult spell to defend against. And this spell is very suitable for sneak attacks.”

“Chen Yu, I feel that the spell you cast, yes, in your world, you call spells ‘magic curses,’ right? The magic curse you just cast is not only formless and soundless, with a tearing effect, but it also seems to be accompanied by some kind of curse.”

Chen Yu nodded and said, “Wang, your feeling is not wrong. In our world, this spell is called ‘Sectumsempra’. When this spell is cast, it shows no obvious signs. The cursed person will have huge wounds torn open on their body, and the injured parts cannot be healed by any means, including healing magic. It is a concealed, malicious, yet very powerful and effective Dark Arts. If Professor Snape had not invented its counter-spell at the same time he invented this spell, I estimate that once this spell spread, it would have become the fourth Unforgivable Curse.”

“Counter-spell? Unforgivable Curse?”

Wang was a little curious, not knowing what a counter-spell and an Unforgivable Curse meant in Chen Yu’s world, especially the Unforgivable Curse, which sounded like a forbidden magic prohibited in Kamar-Taj.

“A counter-spell is a spell specifically designed for another spell. Take Sectumsempra, for example; the cursed person can only use the ‘Vulnera Sanentur’ spell to heal the damage caused by the curse. As for the Unforgivable Curses, they are spells for which no counter-spell has been invented yet, meaning they are incurable once cast.” Chen Yu thought for a moment and continued, “In our world, there are currently three Unforgivable Curses: Avada Kedavra, the Imperio, and the Crucio. They respectively have the effects of instant death upon casting, target control, and causing excruciating torture to the target.”

“They certainly sound unforgivable.” Wang wiped the sweat from his forehead again and cautiously asked, “So… how many of these Unforgivable Curses do you know?”

Chen Yu gave Wang a big smile, and a single “Guess” left Wang a bit flustered, so he could only laugh awkwardly along with Chen Yu.

Wang took out a handkerchief from his pocket to wipe the sweat from his forehead; just awkwardly laughing wasn't going to solve anything, so he decided to skip this topic and mentally categorize Chen Yu as someone not to provoke unless absolutely necessary.

Wang felt that compared to Kamar-Taj’s magic, the magic from Chen Yu’s world had even more bizarre effects.

Flying on brooms, invisible and soundless attacks with curses, the ability to repair objects as if time were reversing, and the three evil-sounding Unforgivable Curses Chen Yu mentioned—none of it seemed like what a normal magic world should have.

At least, not the magic world Wang knew.

In Wang’s understanding, a sorcerer’s magic mostly came from dimensional demon gods, so they used magic with great caution. Most ordinary sorcerers would attach magic to their weapons, adding special effects to them, and then resolve battles in close combat.

While flashy magic effects looked cool, being burdened with huge magic loans looked quite pathetic.

After all, no one wanted to finish a fight, go home, and be saddled with a massive “loan” even more terrifying than a mortgage.

More skilled sorcerers could borrow more power from dimensional demon gods, like using one credit card to pay off another. They would borrow power from one demon god to repay the “loan” of another, then borrow from that demon god to repay the power of yet another, in a cycle that endlessly deferred their debt. If they were lucky, they could not only maintain each dimensional demon god’s contract but sometimes even unexpectedly gain a small benefit from a dimensional demon god.

Even more skilled sorcerers weren’t just gaining small benefits from dimensional demon gods; they were simply borrowing and not repaying.

Anyone who dared to come collect the debt would have their head broken, their legs fractured, and their ashes scattered.

They would set up their own feast and invite other dimensional demon gods to drink the soup.

Their battle achievements were glorious, their fame resonating throughout the universe.

Weaker dimensional demon gods, upon hearing their name, would tremble and pray they weren’t the next victim.

Yes, I’m talking about a certain bald individual who borrowed money all over the universe, leading to his “notoriety” and being “blacklisted” by most dimensional demon gods.