If it were someone else, how would it be able to monitor?

Yugaya pondered, and all sorts of images kept flashing through his mind.

Like a bat, through the feedback of sound waves, like a snake by perceiving infrared, like Anilu through the heart network created by electricity, like beating the enemy Hakka through the energy in the body to form a circle to perceive, through the flow of wind, through the change of water vapor......

All of a sudden, all sorts of inspirations came to mind.

After several days and nights of reflection and practice, Yugaya's monitoring magic took shape.

Through several variations and combinations of spells, Yugaya sketched out the rudiments of magic runes.

[Listen to the Wind and Rain] - Refer to the ancient magic of war, and perceive the things around you through magic and natural changes in the outside world.

It's just that this spell has a lot of drawbacks. For example, spells are as lengthy as ancient magic; For example, due to the limited mana reserve, the perception range is very limited; For example, because of their own conditions, they are very slow to perceive changes in the outside world......

Well, although this spell is a bit useless, it is also the first spell of his own in Yugaya's life.

Jugaya had already thought of more improvements, which were expected to be completed before Harry's Quidditch matches, so she wouldn't need a telescope to know what was going on in the arena.

It's November, and it's getting cold. Hogwarts lives on the side of the mountains, the whole mountain range is covered with ice and snow, and the campus has become extremely cold, I don't know if it is the reason for [listening to the wind and rain], Yugaye is huddled in her coat, still feeling the wind coming from all directions, desperately drilling into her clothes, trying to take away all her temperature.

A metal jar was suddenly stuffed into Yugaya's arms, and there were not many carvings on the jar, but from the carved patterns on the upper and lower ends, you could faintly see a green glow in the jar, exuding a warm glow.

Yugaya picked it up and looked at it, looked up and asked, "What is this?" ”

"A fire." Carlisle couldn't help but rub her jet-black smooth hair when she saw her smile comfortably, "Give you warmth." ”

"Thank you~" Yugaya held the jar in his arms and looked up at Carlisle and smiled. Seeing him look at himself intently, Yugaya suddenly felt a little uneasy, quickly lowered his head, and repeated, "Thank you." ”

The voice is low.

Carlisle saw that the tips of her ears, which were hidden in her hair, suddenly turned crimson and pink and crystalline, and pursed her lips, a little distracted.

"Yugaya~" Hermione found Yugaya and immediately shut up when she saw that Carlisle was also there.

She'd come to join Yugaya, and it was a Quidditch match tomorrow, and Harry looked nervous.

Although Carlisle and Yugaye are dating, this can't hide the fact that he is a Slytherin, and Harry is their Gryffindor's secret weapon, so she naturally can't tell Carlisle.

In fact, this matter has been spread everywhere.

One person tells another and says it's a secret, and I just tell you, you must not tell anyone else. This man said the same thing to another close friend.

As it turns out, the little wizards don't know how to keep it strictly secret.

"You guys play, I'll go back first." Carlisle didn't care when she saw Hermione's desire to speak, smiled and turned to leave.

Hermione still has a good impression of Carlisle, she is good-looking, much more mature and stable than her peers, if it weren't for his liking Yugaya, maybe Hermione would have pursued it. Let's just think about it, if she really wanted to pursue a Slytherin, she wouldn't be laughed to death by Malfoy, and Yugaya's mother was still a wizard.

"What is this?" Hermione's eyes sharpened to see what was extra in Yugaye's hand.

"A fire, Carlisle kept me warm." Yugaya gave Hermione a glimpse of the fire in the jar.

"Green!" Hermione was shocked, "This is the Gublai Immortal Fire, the kind that is said to never be extinguished, he is really generous." ”

At this moment, Hermione was sour, the wicked rich man.

"Is it worth a lot?" Yugaya asked.

In terms of knowledge, Hermione is also worthy of her name as a jack-of-all-trades.

"I don't know, but it's still relatively rare." Hermione felt that Carlisle was indeed an attentive person, and she didn't even notice that Yugaya was so afraid of the cold.

Coming to the courtyard outside, Hermione also used her magic to conjure a bright blue flame and put it in a jam jar to keep warm. She found Harry a copy of Quidditch Origins, which was very interesting and showed them about the 700 ways to foul Quidditch.

The four of them stood there as Snape passed through the courtyard, and a few of them leaned closer together to try to block out the flames behind them.

Yugaya looked at the three guys' expressionless expressions.

Snape walked over unexpectedly, limping, and came for Harry's trouble.

Snape didn't see the magical flames behind them, but he brazenly took Harry's book on the grounds that it couldn't be taken out of the library.

"The library doesn't have that." Harry watched Snape limp away and muttered angrily, "I wonder what's wrong with his leg?" ”

Harry had been very irritable all day, and the book had been taken away by Snape, which made it even worse. He struggled with the spot for a moment, but decided to go to the basement to find Snape.

In a few moments, Yugaya saw him running all the way back.

"Did you get the book?" Seeing that Harry was empty-handed, Ron couldn't help but ask, "What's going on?" ”

Harry lowered his voice to tell them that he had seen Quirrell bandaging Snape's leg, which had been bitten by a three-headed dog.

Harry was convinced that Snape was trying to steal the contents through the trapdoor beneath the three-headed dog.

"Professor Snape probably wouldn't do that, and the three-headed dog should be easy to deal with." Yugaya disagreed with Harry's words and raised his doubts.

"How is that possible? He's so big, he's fierce, and he has three heads. Ron was shocked at how Yugaya had come to say such a thing.

"Just like the troll demon is resistant but clumsy, I think the three-headed dog has its own weaknesses." Yugaya said, "Do you know Cerberus? ”

"Seems like you've heard of it somewhere? Is it a man from Greek mythology? Hermione responded to Yugaya's words, and the other two shook their heads in confusion.

"The three-headed dog of hell in Greek mythology, who lived on the banks of the River Styx and guarded the gates of the underworld for Hades, the king of Hades. Cerberus allowed the soul of every deceased to enter the underworld, but not to anyone else, and also to allow the living to enter or leave. In Greek mythology, Orps, the hero of the Argo, entered the underworld in order to bring his dead wife Eureditor back from the underworld, and used his harp to play a beautiful sound to put Cerberus to sleep. I think that the weakness of the three-headed dog should be music. ”

When it comes to music, Yugaya almost forgets that she still has an erhu that she has forgotten.

"That's just a myth, and we can't be sure it's true. Even Snape didn't know. ”

"We can ask Hagrid for confirmation, I don't think anyone in the academy will have such a large and dangerous creature except him." Yugaya said.