Walking into the lounge, Harry saw Li Huan sitting at the small table, looking out the window.

The Defence Against the Dark Arts professor's lounge was originally windowless, and Hogwarts is an old castle building that not every room has windows.

Li Huan made a hole in the wall by himself, admiring the Forbidden Forest facing outside this room.

"Sir, I'm coming." Harry said.

Lupin came in after him, closing the door by the way.

Li Huan turned his head, put down the cup, and said, "Well, then I'll start practicing how to deal with Dementors." ”

"Do you just practice like that?" Harry asked, noticing that there were no cages in the room for Dementors, and no containers like large wooden boxes.

"Of course not, look at the corner over there." Li Huan pointed to a dimly lit corner and shouted over there, "Get up." ”

Harry stared intently as a gray-black Dementor curled up in the corner, barely recognizable because of the similarity of colors.

The dementor heard Li Huan's voice, trembling and slowly rising, floating in the air.

Harry was surprised to find that the Dementor had a chain around his neck, locking him in the room, and a red circle of light floating on his head, like an angel.

"This is the Dementor?" Harry asked, realizing that he wasn't scared when he faced the down-and-out Dementor.

"Yes. Lupin, you tell him the trick to 'calling the gods', and I'll talk to the Dementor. Li Huan got up and said, he walked to the corner of the wall and began to explain the rules.

Harry listened to Lupin talk about the use of the "Calling the Gods" charm.

“…… Most importantly, you need to imagine the happiest things in your head. Lupin concluded.

"The happiest thing...... I know. Harry nodded thoughtfully.

Li Huan untied the chains around the dementor's neck, and the emaciated dementor slowly floated towards Harry.

His head tilted forward, just the movement of them sucking up emotions.

But he stopped halfway through, "quack", and let out a hoarse cry.

Harry didn't know what he was called, but it instantly cleared him in his head, like a conscious exchange.

"Can I eat you?" The Dementor asked weakly.

Harry nodded.

The Dementors unleashed their abilities.

Suddenly, a wave of despair and sadness came over Harry's heart, and he couldn't help but think back to his vicious aunt and uncle, who had not smiled at him for as long as he could remember

Even further aback, he vaguely heard his aunt cursing him behind his back as a "monster".

"Hurry up, Harry." Lupin shouted.

"Expecto Patronum!"

Harry struggled to remember happy things, and he thought of a lot in a flash, the friends at school, peeking at Mr. Alaire's collection in the middle of the night, Professor Dumbledore's affirmative looks, and so on.

A white light was released from his wand, driving off the weakened Dementors.

"Quack ......"

The Dementor screamed in horror, as if to say, "It's terrible, I'm dead, I'm dead......"

Harry lowered his wand and said excitedly, "Did I succeed, Professor?" ”

Lupin looked at the thoughtful Dementors, and then at Harry, unable to bear to tell the truth.

"It's not even close." Li Huan said mercilessly, "There is no problem with your movements and spells, but your emotions are not enough, you also need stronger happy emotions." Also, this Dementor is very weak, and I'll give you a criterion, when the white light from the tip of your staff is able to dismantle him, you can dispel a normal Dementor. ”

"Gah? Ga! ”

When the dementor heard Li Huan's words, he trembled with excitement, and he didn't say that he would kill him at first.

"Get ready, Harry!" Li Huan said.

Harry had just used up a lot of mana, and he was going to take a break, but Mr. Alaire didn't give him time to rest.

Because the Dementor's life is threatened, he has to pull a burial companion before he dies, and he fights Harry with all his might.

However, the only way their race attacks is to absorb emotions.

Harry felt the oppression again, more desperate than before, and if left alone, he might really be sucked into autism.

At this moment, he thought of a lot, Mr. Alaire, Miss Beta, Miss Irma and his surprise at the manor for afternoon tea and the gifts he received every year for his birthday and Christmas......

But that doesn't add up to enough.

Hurry up, Harry shouted inwardly.

He recalled what his predecessors had done, and finally thought of the sect advocate Wuji, the experience of the death of his parents was similar to his, if he let Sect Leader Zhang face this, he would definitely feel that his days on Ice and Fire Island were the happiest.

for there were his parents and his father-in-law.

Harry thought back to the secret passage where he had been searching for the Philosopher's Stone last year, and he had seen a mirror in which for a moment flashed two people standing behind him, eyes similar to his, and a concerned smile on their faces.

Harry had been wondering who they were, and now it suddenly dawned on him that it was his parents.

"Expecto Patronum!"

As the memory came back, Harry's staff glowed with a dazzling white light, forcing the Dementors back.

The white light illuminated the entire room, and the dementor seemed to have encountered an eighteen-level gale, and the whole person was stuck against the wall and could not move, and the expression on his face was very painful.

Soon, Harry's mana was depleted and the spell stopped, and he asked breathlessly, "Did I succeed?" ”

Lupin complimented, "Yes, Harry, you're doing a great job. ”

Mastering this spell as a sophomore is a good skill for Harry.

The Dementor fell off the wall and twitched, "Gah? He was very puzzled, why didn't he die?

"'Calling the Gods' is not an offensive spell, and there is no threat of death, even if it is a weakened Dementor." Lupin explained to Harry, who looked confused.

It dawned on Harry that Mr. Alaire had said that on purpose.

"Don't play dead, there are dozens of students in Defence Against the Dark Arts class next week." Li Huan kicked the Dementor and said.

What the? And dozens more? The Dementors were desperate.

Harry was about to leave, but before leaving, he asked, "Professor, I remember the Dementor I met on the train, and he didn't have this on his head. ”

He pointed to the red aperture.

"Oh, it's a condensed fire. Once this guy wants to get out of trouble, a burst of fire can ignite him instantly. Li Huan said, "I put this on the heads of the Dementors outside the school, and as long as one Dementor is ignited by the fire, the other Dementors will also catch fire, which is called fire transmission." ”

Harry nodded in understanding.