Diana returned home on the third day after Christmas, and she was satisfied with her trip to Hogwarts. The day after she left, Nicks handed the form to Professor McGonagall.

Professor McGonagall looked at Nicks and said, "Even if you have a form, you can only go on Saturday." ”

"Professor, can't you be accommodating at Christmas?"

"Nope." Professor McGonagall was resolute.

The Knicks have no choice but to leave and meet the twins around the corner.

"What are you going to Hogsmeade for?" George asked.

"There was nothing at Hogsmeade for Christmas, you went the other day and didn't see the shops closed?" Fred added.

"Grab some butterbeer and celebrate." Nicks lied, he wanted to go to the Hog's Head Bar and see the so-called black market.

"We can help you."

"But you'll have to pay for the errands."

The Knicks refused: "Forget it, if you don't have it, you won't drink it." ”

The twins looked at each other and analyzed:

"The Knicks are a generous man."

"I won't refuse for a little errand."

"It means that he didn't want to buy butterbeer."

"I'm going to Hogsmeade myself."

"There are very few shops that are open now."

"It's not a store, it's a bar."

"You can only drink butterbeer when you go to the bar."

"Maybe it's for Ms. Rosmerta."

The two laughed lewdly.

"No, Fred, he has a girlfriend."

"George, you're right, he's not going to see the hostess."

"Does he want to go to the Hog's Head Bar?"

"Docking with his men?"

"Perhaps, he's the future Dark Lord."

……

The Knicks shook their heads and left without leaving the ridicule of the two. Since he couldn't go to Hogsmeade, he went to the Room of Requirement to see his little mouse.

He was going to spend Christmas with his mother, his experiments were at a standstill, and he didn't know if the little mouse had been burned to death by the black fire.

Before he went, he looked for some other mice, and he didn't know whether the mouse was male or female, and he couldn't tell the male from the female, so he could only catch more.

There are not many rats in the castle. Before the basilisk died, the rat was the food of the basilisk, and after the basilisk died, the rat lost its worst enemy and multiplied rapidly.

But some time ago, Nix found that rats were overflowing, and caught some for experiments, and now the rats in the castle have not recovered.

From the first floor up to the Room of Requirement, Nicks sensed the small animals around him along the way, and caught mice when he found them, and finally only caught a dozen of them.

When you enter the Room of Requirement, the flame around the rat is still there, and the food inside is there, but the rat is gone.

Knicks tightened his heart, if he ran away, where would he find it.

Looking closely, the Knicks felt that the rat didn't run out, and there was a lot less food in the flame, so it should have been eaten.

The surrounding mouse corpses all melted into a puddle, and looking along the blood stains, the Knicks found a small blood cocoon in the corner, and the mouse stood by the blood cocoon, vigilantly observing the Nix.

The blood cocoon was growing and shrinking like breath, and Nicks didn't know what was inside it, and wondered how a mouse could do it.

Thinking that it was swallowing a mixture of materials, I was relieved that something might happen to the mixed potion. It's normal to have an unknown ability.

The rats were released, and they scattered and fled, some ran to the corner, trying to make holes to escape, some ran to the flames, they smelled the food, and rushed into the flames for whatever they wanted, and were burned to ashes.

There are also rats that run around and rush towards the blood cocoon, and the rats on the side of the blood cocoon assume an attack posture, and every mouse that runs past will be ruthlessly bitten.

Rats that are bitten to death will quickly turn into a puddle of blood, which will flow into the blood cocoon.

The Knicks feel like the cocoon has grown a little bit, but it's still early to mature.

The doors of the Room of Requirement are opened again. "Is this your new experiment?" Dumbledore seems to have deliberately chosen the time when the Knicks were here. "What is it? Looks dangerous. ”

"I don't know, but the stuff inside seems to be alive," Nix said. ”

"Yes, it has its own consciousness, I can feel it has emotions, but it is very faint and will disappear at any time, do you want to raise it?" Dumbledore observes the Blood Cocoon through spectator potions.

Nicks pointed to the rat guarding the Bloodcocoon and explained, "I'm aiming for it, it has what I need in its body." There is no way to deal with it in the normal way, so it can only be separated and purified by breeding. ”

Dumbledore: "Is this dangerous-looking thing useless?" ”

"I don't know, I just found out when I came in today." Nick Dow.

Dumbledore was about to say something, but was interrupted. The door behind him was opened again.

"Harry, I'm right, there's a very strange thing here, and Hermione will definitely tell the professor when she sees it.

It was Harry and Ron who came in, and when they saw Dumbledore and Knicks, their expressions were slightly embarrassed.

Ron had snuck in before, and he had tried many times to find the right way to open the Room of Requirement. After opening the door, he didn't see the mouse buried by the food, and when he found the blood cocoon, he thought it was the mouse who had changed, and out of curiosity, he poked it, but the blood cocoon was very unsolid, and he poked a hole.

Seeing Ron destroying his masterpiece, the rat escapes from prison and attacks Ron in a rage.

Ron barely walked away under the onslaught of a fireball of ice spears. He felt that the blood cocoon was dangerous, and after thinking about it, he didn't go to the professor, but to Harry, wanting to destroy the blood cocoon and stop the Knicks from continuing the experiment. Replace Hermione, and it's Professor McGonagall who comes in.

Dumbledore wanted to study the Blood Cocoon. Wave your wand and lift the rat from the side of the blood cocoon. The rat smelled Ron's breath and thought he was about to destroy the blood cocoon again, and screamed in a frenzied voice. Dumbledore relied on his magic power to suppress the mouse, both the sound and the struggle disappeared, and life and death were in the mind of old Deng.

Without Knicks' experiment, the rats would have been crushed to death.

Dumbledore puts the rat in the flame cell that Nicks built. The moment the suppression was released, the rat built an ice bridge, quickly crossed the wall of fire, ran to the blood cocoon, and barked at the crowd.

"Ordinary rats don't have the ability to do that." Dumbledore asked, "Nix, you can already get the ability to cast spells on animals?" ”

"Potions have always been effective against animals, but they are very unstable, and it takes a lot of rats to die." "This rat is very smart, and it knows to play dead before I feed it," Nix explained. ”

"So, isn't it just because of your potions?" Dumbledore didn't wait for Nix to answer, and continued, "In other words, different potions can exert different powers in the hands of different people! ”

Nicks thought for a moment and replied, "Yes, I once gave Lockhart potions, and he can only use them to change his surroundings. Changing the Auror is probably a killing technique. ”