Time flies, and Yang Su still maintains a leisurely life at Hogwarts. Several students also practiced very hard. The basics of dimensional science magic attack their studies are also on track.

Nodes in space are everywhere, the difference is just size. Some are easy to spot, while others are impossible to see even when standing in front of you.

The basic attack of dimensionality is to urge the magic power in the body to attack the enemy, and at the same time stimulate the nearby space nodes to cause a slight explosion to increase the damage of the attack.

But it seems simple to say, but in fact, it is not so easy to actually do. Watching his students fail again and again, Yang Su was not bored, and still patiently waved his wand to think about some points that they needed to pay attention to when demonstrating spellcasting.

……

Time passed quickly, and on Halloween, Yang Su walked into the hall wearing the professional uniform of a Chaos Walker. Early in the morning, Dumbledore informed him of his attendance at the Halloween feast.

However, to Yang Su's surprise, there was no make-up banquet at Hogwarts today. Each of the young wizards wore this formal wizard's robe, eating fine food at the tables of their respective houses. The professors at the guest of honor were also dressed in their usual clothes. Not all teachers were present, though. Professor Quirrell, who taught Defence Against the Dark Arts, was nowhere to be found.

Arguably the biggest change to Hogwarts for Halloween is the addition of jack-o-lanterns and a variety of Halloween decorations. What intrigued Yang Su the most was probably the bats hanging around the hall and the dark clouds floating on the ceiling.

"Where's the Halloween feast? Why are all of them wearing old-fashioned school uniforms! Looking at the students in front of him, Yang Su sat down in his place and asked Dumbledore beside him. It was he who told him that Hogwarts would have a feast on Halloween, and asked Yang Su to be there.

"Haha~ Robin, all of us are playing the same profession - wizard!" Listening to Yang Su's words, Flitwick, who was sitting next to him, said with a smile: "Also, our school's uniform is the most fashionable and popular among all wizarding academies. ”

Since getting acquainted with Yang Su, Flitwick, who seems to be calm, has become more and more out of tune. Although this guy with this goblin bloodline is a little shorter, he did come to talk to Yang Su.

At this time, Dumbledore opened his mouth to respond to Yang Su's question just now.

"I just asked you to come over for a Halloween party, but I didn't say what kind of masquerade it was. There's nothing like playing monsters in The Witcher's Halloween. But it's true that you have an indescribable charm in this outfit. ”

At this moment, Professor Quirrell, who had just disappeared from Dumbledore's words, ran into the hall with a look of horror on his face. Everyone stared at him, only to see him walk up to Professor Dumbledore's chair, lean back on the table, gasp and say, "Troll, there's a troll in the underground classroom!" ”

With that, he fell headlong to the floor and passed out. There was chaos in the restaurant.

Professor Dumbledore had to make a few screeching fireworks explosions on his wand's head before everyone fell silent.

"Prefect," he said in a deep voice, "bring the students of your academy to the dormitory at once!"

I saw that after Dumbledore's words fell, the prefects of each house said to their classmates, "Follow me!" Don't get scattered, underclassmen! As long as you do what I tell you, you don't have to be afraid of any trolls! Okay, follow me closely. ”

At this point, Dumbledore only hoped that the students would return to the dormitory as soon as possible. While the trolls are mostly rude, stupid, and slow-moving, it's not hard to give them a chance to deal with these little ones.

Yang Su watched as Snape left the teacher's line and walked towards the third floor. At this time, there were also a few naughty little guys in the hall who broke away from their ranks.

"It's really not worrying." Seeing Harry and Ron leave the Gryffindor team, Yang Su walked up to Professor McGonagall and reminded, "Professor McGonagall, there seem to be fewer Gryffindor students. It's best to pay attention. ”

Listening to Yang Su's words, Professor McGonagall immediately said to Percy, the prefect of Gryffindor, "Percy, count the number of people. I don't want any students to have accidents. ”

"Uh" listened to Professor McGonagall's words, and Percy began to check to see if everyone was there. It's a shame Harry and Ron were exposed. In time, without Yang Su's reminder, Percy could easily find out who the few little guys who ran away were. His younger brother Ron, known to everyone as Harry Potter. And then there was Hermione, a freshman in their same grade.

"Professor McGonagall, there's three people missing. I'm going to get them back right away. Percy looked guilty as he counted the numbers, feeling that he had betrayed Professor McGonagall's trust. and asked Professor McGonagall to let her go and retrieve a few of them.

At this time, Yang Su looked at Professor McGonagall's hesitant expression and took the initiative to speak, "Take your classmates back." Leave this to me, I just hope they don't run to the underground classroom to deal with the trolls for the sake of heroes. ”

"Then I'm sorry for you, Professor Robin. I would like to thank you first of all on their behalf. Please find my brother and his companions. Percy is a power-obsessed guy, but I have to say that he still cares about his brother.

Opened the dimensional rift, and Yang Su appeared in the place where the troll appeared. But what's interesting is that these little guys seem to have solved the crisis.

Chasing Ron's words, "Yuga Dim Leviosa!" The stick suddenly flew out of the troll's hand, rose high, high into the air, and slowly turned around again—it fell, and struck its owner on the head with an earth-shattering thud. The troll swayed in place and fell face down on the floor with a thud that shook the room.

Watching the ugly troll fall, Yang Su looked at the few little guys in front of him and said with a smile: "It's really surprising, a few of you knocked out a troll!" ”

Just then, Professor McGonagall walked in with Snape and Quirrell. Looking at the trolls on the ground and a few little guys with panicked faces, Professor McGonagall asked Yang Su, "Did you defeat this troll?" ”

"No," Yang Su said with a smile listening to Professor McGonagall's doubts, "Your students knocked it down, and these three brave little guys just knocked down this big guy when I appeared here." ”

"Robin, I'm more convinced that you brought it down." Snape, who was standing behind Professor McGonagall, said to Yang Su's words.

"But I'm not lying, these little ones did take it down with their own strength. I could clearly see them use the levitation charm to send the rod flying and slamming it down on the troll's head. ”