There was nothing unusual where the wand pointed.

"What's wrong?" Ron's voice trembled with surprise.

Harry narrowed his eyes and took a deep breath: "Just now I felt a strong aura approaching us."

"Did you feel it wrong?" Ron looked around in panic, took out his wand, stammered, and recited the spell twice before releasing the illumination spell, "Could it be the smell of some dark magic books?"

Harry shook his head: "People and things have different auras."

Ron turned pale and gripped his wand tightly.

He slowly pulled his wand back: "Hurry up and find the book. I'm feeling very uncomfortable here."

The "Powerful Potion" was not difficult to find and was found quickly.

Ron held up his wand.

Harry quickly wrote down the prescription and also wrote down a summary of the two pages of precautions.

They returned to the dormitory and read the contents carefully again.

Ron had a headache: "This potion is so complicated."

"But it's powerful, isn't it?" Harry's eyes sparkled, "and it doesn't require much material."

"Lacewings, antimony, leeches..."

The combination of minerals and herbs, some of which were used in a very barbaric way, opened his eyes. He began to have some ideas about how many of the witcher's potions were realized in this world.

It was almost three in the morning when Harry turned off the lights and yawned: "When we get up tomorrow, let's go check the medicine cabinet in the Potions classroom."

"If all the materials were there, we wouldn't have to worry about the materials."

Ron was dazed, lying on the bed in a posture of inviting someone into a trap, mumbling: "Okay... okay."

He didn't have as much energy as Harry and would have collapsed long ago.

The next day, they got up.

The Potions classroom remained open to the public during the holidays, and some fifth and seventh year students who had to get "O" in their exams did not have a relaxing Christmas.

There were many medicinal herbs in the student's locker, as well as minerals and metals, except... two of the most crucial materials were missing.

Powder of bicorn horn, skin of boomslang.

Harry took some extra herbs and disguised them as ingredients for brewing three potions.

Wait until you leave the classroom.

Ron breathed a sigh of relief, "It's horrible. I can't even go home for Christmas in my senior year."

"The way they look at us is no better than the way you look at them." Harry shook his head. "In their eyes, you might just be that kind of... good student who works hard in the first year."

Ron turned his neck awkwardly.

He is not bad, but the word "good student" does not quite fit his style.

"Maybe Professor Snape will change his feelings towards you because of this." Harry teased, "Look, isn't he a little more friendly to Hermione now?"

"I wonder if you have some misunderstanding about 'pleasant face'." Ron shuddered.

In Potions class.

There were three people's assignments, and Snape would give a long speech.

Harry would be scolded.

Malfoy tends to get the most compliments.

Then there was Hermione. Snape wouldn't target her like he did Harry, but... out of respect for Gryffindor, he wouldn't have anything nice to say.

The other little lions were terrified.

On the contrary, the two parties involved didn't take it seriously and even hoped that Snape would scold them a few more times.

"What about the remaining two materials?" After walking away and making sure that there was no one around, Ron complained, "Professor Snape must have them in his storage room."

Harry shook his head, "I don't think stealing from a professor is a wise choice."

Ron sighed: "What should we do then?"

"Hogsmeade." Harry suddenly stopped and looked out the window. "We can go there and take a look."

Ron was stunned and frowned: "But that's a place only third-year wizards can go, and they need their parents' permission..."

"Perhaps we can ask your brother." Harry continued to walk forward. "They know many secret passages in Hogwarts. Maybe one of them leads to Hogsmeade."

Ron's brows were still furrowed: "But how do we tell them?"

"Say... we want to buy ingredients for Polyjuice Potion?"

Harry glanced at Ron oddly. "Materials aside, don't you want to go to Hogsmeade?"

Ron was startled.

"Isn't it normal for a young wizard to want to go to Hogsmeade?" Harry continued to ask.

They returned to the lounge.

The Weasley brothers rarely went out to cause trouble.

"George." Harry sat down next to someone, "I have something to ask of you."

The man said seriously: "No, I'm Fred."

"You're George," Harry corrected. "That trick won't work on me."

George muttered, "Oh no, Harry, how do you do it? You can tell us so accurately every time."

"I want to go to Hogsmeade, do you have any ideas?" Harry asked straight to the point.

Fred raised an eyebrow. "You're going to Hogsmeade? Now is not a good time..."

"I can't stay in Hogwarts for the whole Christmas." Harry looked helpless, "Most of my friends have gone home."

George chuckled and said, "Then you have found the right person. We know seven secret passages leading to Hogsmeade."

"And Filch only knows four." Fred pinched his waist and said righteously.

Ron raised his hands. "Great, George, Fred, I knew you would know."

"Harry can go," George said seriously, "but you can't, little Ronnie."

Ron's eyes widened: "Why?!"

"Harry is very powerful. He can kill a troll." Fred said sarcastically, "but you can only be killed by a troll."

"Perhaps you are no match for a Flobberworm."

George paused. "And Harry looks very mature. Except for his height, he looks like a big kid."

"And you're still just a little brat, my dear little Ronnie." Fred spread his hands, "You're still just a little Ronnie baby who only knows how to cry to your mother."

Ron's face turned red with anger and he shouted, "Fred, George!"

"Our little Ronnie is angry again." George exclaimed, "Do we need to ask Harry to borrow Hedwig to write a letter to his mother to complain about us?"

Ron gritted his teeth and said, "I will turn you two into a pile of stinking shit sooner or later."

"It's two groups." Fred stood up and patted Ron on the shoulder. "He and I are two people, not just one."

"We'll bring you some candy when we come back." George rubbed Ron's head hard. "How about a pile of cockroaches? That's a sweet treat that even Headmaster Dumbledore likes very much."

"I think Spider Candy would be more suitable for little Ronnie."

“Do you have this kind of candy?”

"Perhaps we could ask the Duke of Bee to do a Transfiguration spell."

Ron was shaking all over.

"Once I know the secret passage, we can go together next time." Harry whispered to comfort Ron, which made him feel better.

George and Fred couldn't wait.

Harry went back to his dorm and made some preparations—stuffed two balls of socks into his shoes to make himself look taller, tucked the Sorting Hat under his robes, and hung seven or eight bottles of potions around his waist—

Neville's failed version of scabies potion, water of life and death, eight-eyed spider venom obtained from Hagrid...

He combed his hair again, thought for a moment, and put on the sunglasses Snape gave him - he didn't like them, but the witcher's eyes were too recognizable.

"Harry, you've really changed." George exclaimed, "What's that on your face? It's quite handsome."

Harry replied, "This is a Christmas present from Professor Snape."

They both fell silent immediately, wishing they could take back the compliments they had just received.

Under Ron's envious gaze, they took Harry out of the common room and came to a mirror on the fifth floor. George looked around, carefully took out his wand, and tapped it on the mirror: "Appearance."

The mirror rippled like the surface of water and became as transparent as glass, revealing a passage hidden behind the mirror.

"Come on, Harry." George walked in first.

Fred pushed Harry inside.

"This is our favorite one." George lit up his wand and led the way. "The road is flat and the space is wide. We can walk straight."

Fred sighed, "If there's a downside, it's that this secret passage is getting old. When we used it last year, a big mound of dirt just brushed against George's nose and fell down."

"What a shame, it would have been better if it had hit his head."

George turned around and kicked Fred. "Damn it, what are you talking about."

Fred patted his robes. "And the destination is also very good. It's in a very hidden corner of Hogsmeade, unlike the other two secret passages."

"One entrance is under the Whomping Willow."

"One exit is at Duke Bee's shop."

"We were almost caught as thieves last time."

The secret passage was very long. It took them a quarter of an hour to reach the end and climb out from another mirror in an abandoned hut.

"Harry, where are you going?" George and Fred were very interested, but they had no intention of leaving Harry to do their own activities.

"Let's go buy some candy first." Harry thought for a while, and he didn't want to get rid of these two people.

Bought some candy for Ron.

He also bought some prank props on the recommendation of the Weasley brothers.

Quill, parchment, some books.

The last stop is to the potion material shop.

"Do you have any boomslang skins?" Harry asked.

The shop owner said in a strange tone: "You want this thing? We don't have it here. It is contraband, my dear little wizard."

Harry nodded without changing his expression, and continued to ask about other relatively rare materials.

There was powdered bicorn horn mixed in with it, but unfortunately... it was also contraband.

Harry paid for the other materials he mentioned.

Fred and George looked at the golden Galleons with some envy in their eyes - they had spent less than half of the money Harry spent in three years of school.

Just walked out of the material store.

A man in a black robe hurriedly followed them out, stopped in front of Harry, and lowered his voice: "Little wizard from Hogwarts?"

"I have the materials you want, bicorn horn powder, fire ash snake eggs, African tree snake skin..."