Back in the evening back to the Gryffindor lounge, Luo Xiaocheng was waiting for the Knicks with a mouse in his mouth.

The rat was not big, it was still alive, only one, and it was still playing dead. Luo Xiaocheng didn't listen to Nix's order to catch mice, it wanted to eat dried fish, but he didn't get dried fish with anyone, so he had to catch a mouse and come back to Nix for dried fish.

As soon as Nix came in, Tifa complained: "Brother, your cat is going to eat mice, I teach it a lesson, and it won't listen." ”

"Calm down, Tifa, it didn't want to eat mice, I let it catch it, you can change it to small dried fish." Nicks explained.

Diana followed in and asked, "What are you doing catching mice?" ”

"I've made some potions, and I need to see how they work."

"Can't you use anything else?" Diana frowned: "Rats carry a lot of diseases. ”

"Otherwise, how about King Meow?"

Tifa screamed, "No, you can't give it a potion that you're not sure of its effect." ”

"Don't tease your sister." Diana pulls Tifa away, showing off the candy she bought in Hogsmeade.

Nix took out some small dried fish, Luo Xiaocheng put the mouse on the ground, ate the small dried fish, and the meow king who had just been put down by Tifa also came over, Luo Xiaocheng didn't want to share the small dried fish, and the two little milk cats fought.

The mouse on the ground took advantage of the two cats to ignore it, got up and ran. After running a few steps, he came across a cat bigger than Luo Xiaotang and King Meow, Hermione's pet Crookshan.

The rat froze and pretended to be dead again.

Hermione looked at the rat and asked, "Are wild rats so afraid of cats?" ”

"It's all rats that are afraid." Ron corrected, "I'm scared too, but it knows how to escape." ”

Harry took the two of them to visit Hagrid in the afternoon, and he thought about seeking revenge on Sirius Black, but he was more sensible.

"Nix, you knew about my father before, didn't you?"

Nicks nodded, his father's notes about Sirius Black, written in a mocking tone of Gryffindor.

"What can you tell you? Can you beat Blake? I'm afraid we can't beat it together, so why bother yourself? ”

Hermione changed the subject, "We went to Hagna in the afternoon?" He received a message from the Ministry of Magic. ”

"What's the matter?"

"The Ministry of Magic asked him to take Buckbeak for interrogation." Hermione replied.

"What the hell did Malfoy do?" Nicks asked.

Ron said angrily, "He must have done it, he wanted Hagrid to become a professor, but Dumbledore kept Hagrid, so he targeted Buckbeak." ”

Nicks picked up the mouse on the ground pretending to be dead: "It's just impotent rage, and so are you." ”

Hermione sensed that something wasn't quite right with the Knicks and asked before Ron lost his temper, "Didn't it go well at Hogsmeade?" What happened? ”

"I don't know, Miss Rosmerta talked a lot to her mother, and it's hard to say what mother was about Hogsmeade." Nicks shook his head, got up and walked outside.

"Where are you going?" Hermione asked.

Nick shook the mouse in his hand and said, "Go and experiment." ”

"What experiment?"

"You want to know if you can come."

The three got up and followed Knicks.

Take the three of them to the Room of Requirement. It was littered with rat corpses, some completely reduced to puddles of blood, some retained some of the rat's features, and the rest twisted into grotesque pieces of flesh.

Hermione looked at the rat corpses in shock, and Ron muttered to himself that he must keep Spotted away from Knicks, otherwise he would be killed by Knicks sooner or later. Harry felt that the Knicks were more like the Dark Lord, how could he be so cruel if it wasn't for the Dark Lord.

Nicks took out the mouse and Dementor remains and forcibly fed the wreckage, which was half the size of a mouse.

The rat struggled frantically, but it hadn't digested the debris enough to do harm to the Nix. Nicks threw it to the ground, and the mouse crawled a few steps and didn't move.

"It's dead?" Hermione asked.

"I don't know, wait and see."

After a while, the rat moved again, and Knicks was a little stunned, this was a success. He stepped forward.

The rat takes an attacking stance.

When Harry and Ron stepped forward, the rat's tail shot fireballs at them, and they dodged sideways.

"What the hell is this?" Ron shouted.

"Ahh Hermione screamed as well.

The rat carcasses around her staggered to their feet, and one of them, which had only the front half of its body, nearly bit her.

Several people retreated to the door.

"Nyx, what should I do?"

"I don't know, wait and see."

Seeing that a few people had retreated, the rats stopped attacking and let the corpses of other rats surround them, and the broken rat corpses slowly put together randomly.

Nicks saw that there was a thin layer of ice in the places where they were spliced, and that the incomplete places were also blocked by ice.

When the army of rat corpses is ready, they begin to charge at the Knicks.

"There are many obstacles"

The rat corpse slammed into the barrier, its stiff body shattering.

"Hermione, you get out first."

Hermione's arm was injured and she couldn't stay to help. She didn't listen to the Knicks, though.

"What are we going to do?" Harry asked.

"Divided"

The Knicks replied to Harry with action.

Harry casts spells like the Nix: "Teared apart"

"What should I do?" Ron asked, trembling with his wand.

Hermione said disdainfully, "You don't know this spell? ”

"No, it won't."

"Then use a curse." Nicks demonstrative.

"Upside-Down Golden Hook"

All the while, the rat was hit by the spell and quickly flew up and smashed into the ceiling, and the shattered corpses flew everywhere.

There were not many rat corpses, and the rats that controlled the rat corpses did not retreat, and it didn't take long to be disposed of.

Ron pointed at the rat with an upside-down golden hook.

The Knicks were shocked, it would be in vain if he was killed.

"Armor Protection"

Ron was shocked: "What are you doing?" ”

"That's my experiment, and if you kill me, I'll have to do it again." Nix shouted.

"But it almost killed us." Ron argued.

"It's fine if you don't come, and I didn't ask you to come." Nick Dow.

"I'm ......," Ron angrily left.

Nicks approached the mouse, and the rat fired a fireball at him again, and as Nix fended off the fireball, ice spikes suddenly appeared on the ground.

Hermione yelled, "Be careful. ”

The ice spike didn't hit the Knicks, but was blocked by a cloud of black flames. The black flame forms a cage around the rat, and the rat wants to be burned.

Whether it will be burned to death Knicks doesn't know, but rats certainly can't get out of the Room of Requirement. Now that the rat has succeeded in devouring the remains, all that remains is for it to keep giving birth and get the potion materials that Nicks wants.

Leave some food for the rat and say to the others, "Let's go." ”

"Your experiment was successful?" Hermione asked.

"Half the battle."

Back in the Gryffindor lounge, seeing the two little milk cats who ate dried fish together without fighting, Nicks thought of the mouse again, it was not an accident that it could survive, it was smart enough and strong enough, it would pretend to be dead if it was held by Luo Xiaotang, and it would run away if it was put down.