It wasn't until curfew that the Little Wizards in the Gryffindor common room finally dispersed, still not having enough fun.

Many Little Wizards had a much-changed impression of Chen Yu.

Now, in their perception of Chen Yu, besides being able to eat, he could also make delicious food and sing, truly multi-talented.

Some older female students even tried to hook Chen Yu's arm while he was singing.

They were exceptionally bold.

Facing these older female students who had a good impression of him, Chen Yu acted very gentlemanly.

He only hoped they would patronize his business more often.

Originally, Chen Yu didn't want to go on stage and sing.

But it was his first time doing business at Hogwarts, and he felt that he wouldn't attract attention without some showmanship.

So he went on stage to sing, adding some popularity to his new venture.

Popular music, combined with Chen Yu's singing, indeed attracted a large number of Little Wizards in the common room.

These Little Wizards had never heard such music and were incredibly excited.

The more than two hundred skewers of lamb Chen Yu had prepared were all snapped up, and everyone ate until their faces were shiny with oil, saying the taste was good and they would come again next time.

When night fell and all was quiet, Chen Yu used the Cleaning Charm to clear the rubbish left in the common room after the party and used Reparo to return all items to their original places.

Only then did he carry a cardboard box of sickles and return to the dormitory with Ron.

Chen Yu poured the entire box of sickles onto his bed and counted the money with Ron.

Soon, the box of coins was counted: 468 sickles and 2 Galleons.

In total, the income was 29 Galleons and 9 sickles.

Ron had also put in a lot of effort today, squatting in front of the fireplace grilling lamb skewers until his legs were numb.

But at this moment, Ron didn't complain at all, his eyes fixed on the sickles on Chen Yu's bed.

He hadn't expected to earn so much money in one night.

Especially since three-tenths of it was his, this feeling made Ron feel like he was living in a dream, somewhat unreal.

“Today's total income is 502 sickles, but after deducting the cost of goods from the House-elf, which is 5 Galleons, the net profit is 417 sickles.”

“Seeing how hard you worked all night, I'll give you 126 sickles.”

Chen Yu took out 126 sickles from the box and placed them in Ron's hand.

An excited heart, trembling hands.

Ron trembled all over as he took the sickles from Chen Yu.

He hadn't expected to earn the huge sum of 7 Galleons and 7 sickles in one night.

He knew his family was basically dirt poor; his parents said they were almost starving, and that all the money in their savings box didn't even add up to 1 Galleon.

His income for one night was more than his family's entire savings.

This was simply like a dream.

A wand cost 7 galleons; if he could go to Diagon Alley, he could immediately get a wand of his own!

How could this not make him excited?

With a new wand, whether it was learning spells or teaching Malfoy a lesson, it would be much easier.

Holding such a large sum of money, Ron's voice trembled slightly as he said, “Chen Yu, should we do it again tomorrow?”

Chen Yu shook his head and refused: “Professor McGonagall already knows about this and won't let us set up a stall in the common room. After some time, when things calm down, we'll get a small cart and sell while strolling around the campus; we should earn more than this. But we need to watch out for Filch, the caretaker. We need to find a way to deal with him, otherwise, if he keeps reporting us to Professor McGonagall, we won't be able to do this for long.”

“That wicked Filch, he never wants students to have a good time.” Ron cursed in a low voice. He had never liked Filch, especially after Filch had falsely accused him and Harry of trespassing into the forbidden fourth-floor corridor. “I remember Hagrid has a small cart; he made it himself. We can ask Harry for help, have him ask Hagrid to make one for us. Hagrid probably won't refuse.”

Speak of Harry, and Harry arrived.

Harry suddenly pushed open the door, looking somewhat flustered, as if he had run into Filch during a night stroll.

Seeing Chen Yu and Ron in the dormitory, Harry took several deep breaths before his expression stabilized.

“You'll never guess who I just ran into!”

Harry approached mysteriously, and as soon as he walked in, his nose caught a strange aroma wafting through the dormitory. He immediately asked, “What did you eat? Why does the dormitory smell of food?”

Chen Yu took out one of the remaining ten or so skewers made from Acromantula and handed it to Harry, telling him to eat while he talked.

“I'm telling you... when I came back just now, I ran into Snape! I saw him sneaking to the fourth floor! I suspect he might have gone to the room with the moving wooden door where we encountered the three-headed dog before! Hiss—what kind of roasted meat is this? It's so delicious!”

Chen Yu naturally wouldn't tell Harry what kind of meat he was eating. Ron, hearing Harry's words, immediately chimed in: “You mean, Professor Snape wants to retrieve the item under the moving wooden door guarded by the three-headed dog in the middle of the night? What if the three-headed dog inside is Snape's pet? I think only Professor Snape in all of Hogwarts has the temperament to raise such a monster. Oh, by the way, Harry, do me a favor, ask Hagrid if he can help make a small cart. Chen Yu and I have a big use for it!”

Hearing Ron and Chen Yu ask him to help ask Hagrid, Harry readily agreed.

Seeing Harry agree, Chen Yu put the sickles on the bed into his suitcase, preparing to go out and complete his night patrol mission for the day.

He trusted his roommates in the dormitory and didn't think they would take risks for such a small amount of money.

“Chen Yu, where are you going again?”

Harry saw Chen Yu preparing to leave the room and asked casually.

“Not very sleepy, just going out for a walk. Oh, Seamus and Neville are in the lavatory. When they come out, remember to help me distribute the remaining roasted meat. These are high-quality goods, the meat of magical creatures, so it's best not to eat too much.”

Chen Yu took the Serpent Spell and left the dormitory to study and practice spells in the Room of Requirement.

Although he had already upgraded the Killing Curse to Level 2 in the Room of Requirement.

The LV2 Killing Curse could still only be cast as a single shot, though its power was considerably stronger than LV1.

The LV3 Killing Curse required 1000 experience points, which made Chen Yu stare blankly.

By analogy, LV4 would require 10000 experience points, and LV5 would require 100000 experience points.

It took him two weeks to upgrade the Killing Curse to Level 2; to upgrade to Level 3 at the current pace would require 20 weeks, or over a hundred days.

Coupled with the increasing number of spells he needed to learn, the nighttime practice time alone was simply not enough.

Is there a way to accelerate learning?

Chen Yu once again fell into deep thought.

Perhaps the System God, in the unseen, also found Chen Yu's slow learning speed intolerable.

The next day, when Chen Yu exchanged his accumulated two hundred fragments for a random skill card, he actually drew a skill that aided learning — Merlin's Ring.

“Skill Name: Merlin's Ring LV1”

“Skill Description: Originating from the world of 'The Sorcerer's Apprentice,' this is an auxiliary learning magic unique to the Merlin school. When the player is within Merlin's Ring, the player's mental power, memory, and brain activity will all receive a qualitative boost, helping the player quickly learn and comprehend various magical knowledge, and also increasing the player's meditation speed.”

Merlin's Ring also required Chen Yu to actively cast the magic.

When Chen Yu cast Merlin's Ring, a magical circle with a radius of about one meter would form on the ground, centered on Chen Yu.

Inside the circle, large rings enclosed smaller rings, and between the two rings were six strange characters, very similar to the Runes Chen Yu had seen in the Library.

These Runes contained mysterious power and could not be deciphered by the universal language translator provided by the system.

Chen Yu tried the effect of Merlin's Ring, and it indeed had the function of accelerating thought.

Magical knowledge that had originally seemed abstruse and difficult to understand suddenly became somewhat simple.

To be precise, Chen Yu felt that his brain's comprehension and learning abilities had improved by several levels; a spell like the Confundo suddenly transformed from calculus to the level of multivariate functions in his eyes.

Although still difficult, he could now understand much more.

In just one hour, he had thoroughly grasped the key points and difficulties of the Confundo and successfully learned it.

Next was Occlumency, which he had always wanted to learn; once he mastered this, he could freely jump around in front of Professor Dumbledore.

Unfortunately, with Chen Yu's current magical power, he could only maintain it for 42 minutes.

Merlin's Ring consumed 2 points of magical power per minute, and Chen Yu's continuous eating and drinking over these two weeks had only increased his magical power to 84 points.

Although Carnivore allowed him to continuously sustain himself, and Merlin's Ring could also increase his mental power limit, once he maintained Merlin's Ring for more than two hours, his spirit would begin to gradually weaken.