Crystal's temporary residence at Hogwarts was set up at Hagrid's hut, but it was not Hagrid who took care of Crystal, but Sherlock, in fact, he only needed three meals a day, Sherlock ran over to prepare forage for Crystal, and only Sherlock took the forage Crystal would eat it.

As for what Hagrid prepared, she didn't even pay attention to.

In order not to affect the crystal's diet and let the other party recover as soon as possible, Sherlock had to come to Hagrid's Cottage once a day in the morning, noon and evening.

After leaving there in the evening and returning to the Slytherin common room, Sherlock waited quietly alone until half past nine in the evening.

In the blink of an eye, it was half past nine in the evening, and Sherlock walked out of the dormitory alone, through the Slytherin common room that burned with warm green flames, and down the staggered hanging staircase of the castle to the third floor, where the four Harry had been waiting for a long time, and his sister Asin Sha stood slim among them.

"Something went wrong, and we ran into Neville halfway through, but luckily nothing unexpected happened, and Neville was already dealt with by Asinsha." Harry pushed his glasses and said to Sherlock.

Sherlock looked at his sister Asinsha, but he didn't expect that this time the person who petrified Neville was not Hermione but Asinsha, Sherlock nodded and said, "Good job, did you use the petrification charm?" ”

"No, I used the 'Electric Snake Spark Charm' since you taught me this spell the last time you came back from the Forbidden Forest, and I wanted to use it very much, but I grasped the power and just stunned Neville."

Asinsha stuck out her tongue, and Sherlock shook her head helplessly, saying to herself, 'Poor Denaway, my sister is a bit harsh in comparison.'

With Sherlock, the five of them headed for their destination.

At the staircase on the fourth floor, they were about to step on the stairs, when suddenly Peeves floated in front of them, and saw Sherlock and his party, and in the next second, Peeves opened his mouth, Sherlock pulled out his wand, and a pale red light shot out of the wand, and Peeves's already wide mouth was closed at once, and he struggled in the air to fly in another direction.

Seconds later, they were outside the four-hudded hallway, and the door had already opened a crack.

"Well, see." Harry whispered, "Looks like that man has passed through Lou Wei without any problems. ”

Seeing that ajar door, they seemed more aware of what they were about to face.

With the creak of the door opening, a low bark immediately rang in their ears.

Lu Wei looked at the four uninvited guests in front of him, with a hideous look in his furious eyes, and a harp that had fallen to the ground in the open space not far away marked that the people who had passed in front had obviously been gone for a long time.

Harry picked Hagrid's flute and put it to his mouth and blew it.

He couldn't blow out of tune, but as soon as he blew the first note, the big dog's eyes began to droop.

Harry was blowing almost non-stop.

Slowly, the dog's barking stopped, and it staggered a few times, fell to its knees, and then fell to the floor with a thud, and fell into a deep sleep.

"Keep blowing, don't stop." Ron reminded Harry as the five began to walk towards the trapdoor.

As they approached the three huge heads, they could feel the hot, smelly smell of the big dog.

Sherlock opened the trapdoor, and it was dark and flickering, bottomless, and the light in the room seemed to be completely absorbed when it arrived, and the vision was unknown.

"You go down first." Sherlock looked at Ron and Hermione and motioned for them both to follow him, Harry still playing the flute, and Lowe leaning on the clearing, with his three groggy heads leaning on the clearing.

Ron was the first to jump down, and after a while, Ron's somewhat hoarse voice rang out from inside.

"No problem!" He shouted at the hole, which now looked like a speck of light the size of a postage stamp.

"It's a soft landing, you can jump!"

Then Hermione jumped, and Sherlock took Harry's flute, and in the seconds the music paused, the big dog barked again and began to writhe, but as soon as Sherlock played the flute, it fell back into a deep sleep. Harry crawled over the big dog and looked down through the hole. There's no bottom down there. After a moment's pause, Harry jumped in.

Sherlock played his flute as he stepped back and walked to the trapdoor, Sherlock put down the flute, turned around and pulled the ashinza, and closed the trapdoor close, jumping into the darkness, the roar of Louvy above them was still close to their ears, and they had all jumped into a soft presence.

"Honestly, I'm glad there are these plants here." Ron said.

"Thankfully!" Hermione screamed.

"Look at you guys!"

She jumped to her feet, struggling to move towards a damp wall.

She struggled because as soon as she fell, the plant stretched out snake-like tendrils and wrapped around her ankles.

"Don't struggle." Sherlock reminded them, "It's the devil's net, and the more you struggle, the tighter it gets."

Just relax, and he will automatically let go. With a good demonstration to them, the devil's net around Sherlock slowly loosened as if he had lost his target, sending Sherlock to solid ground.

Sherlock reached out and grabbed his sister, who had fallen from close behind.

"Thank you, brother, thanks to you."

Sherlock nodded.

Hermione and Harry clearly understood well, and as their bodies relaxed, the devil's net around them loosened, and the two fell straight to the ground.

The difference was that Harry landed on the buttocks, while Hermione fell straight into Sherlock's arms.

"Thank you...... Thank you, Mr. Sherlock. Hermione's face was as red as an apple at the sound of the other party's strong forehead, but fortunately the place was dark and no one noticed this, Asinsha held Hermione who was standing on the ground, and the other party was still feeling the warmth of Sherlock's arms.

"Help me!" Ron was entangled in an increasingly dense net, and it was obviously difficult for him to relax his body in such a situation.

Sherlock reluctantly drew his golden wand, and a blazing flame erupted from the wand, and the dark and damp devil's web, as if it had encountered a natural predator, dodged from both sides, and Ron struggled out of the dense devil's web, falling to the ground, splashing a cloud of dust.

"Daddy! Father! It's a damp place. ”

The flame released by Sherlock just now was Prometheus, and a small sun-like fireball appeared in the dim basement, which immediately illuminated the nearby environment, but any place where there was water and was wet, Prometheus did not like.

"Prometheus, clear the way for me ahead."

"Yes, Dad."

Prometheus flew to the front, illuminating the surroundings.

In front of it is a stone corridor, and the view is unknown except for the cold ground and the stone walls on both sides.