Peeves was reluctant to approach Dumbledore's graveyard, much to Zhang Xu's surprise. Peeves says that the spirits of the castle, including the myrtle, who often wanders around the lake, are reluctant to approach the castle.

Zhang Xu didn't embarrass the skin ghost in this matter, so he sent him to check whether there were any traces of human invasion in the secret passages.

Grindelwald pushed open the door of the cabin on the edge of the Forbidden Forest early in the morning, and found a layer of snow on the trees and ground. After eating a simple breakfast from the house-elves at Hogwarts, he grabbed a wand and went to Dumbledore's tomb to clear the snow from all around.

After hearing the sound of wheels crushing against the snow behind him, he turned his head and saw a toothache.

"I think I've lived so long, and I've traveled across the Americas and Europe, and I'm considered well-informed." Grindelwald said to Zhang Xu, "However, you can always bring me all kinds of new things that I have never seen or even thought about. ”

Then Grindelwald raised his wand and pointed at the panda behind Zhang Xu's wheelchair and said, "It's the first time I've seen a patronus to push a wheelchair." ”

Zhang Xu pursed his lips and thought to himself, if you saw a group of nephews and nieces in the village running around the mountains on their patron saints when I returned to my hometown, wouldn't it be shocked.

"As long as you can achieve the effect you want, you don't have to think about what the spell is meant to do." Zhang Xu said, "As long as it's convenient." ”

Grindelwald nodded and said, "What you said makes some sense. ”

（｀⌒′)▔╭╮

As Grindelwald's wand danced, a blue wall of fire spread around him, and behind the wall of fire was a carpet of blue flames that covered a large area around Dumbledore's tomb. Facing the oncoming wall of fire, Zhang Xu did not frown. In the next second, blue flames bypassed him and spread in all directions.

Zhang Xu, who was inside the flames, could feel Grindelwald's extremely terrifying override ability to spells. The scorching flame only melted away the snow on the tomb and the ground, and evaporated the snow water in an instant, and burned the panda guardian who pushed the wheelchair by the way, but the tomb itself and the withered grass on the ground were not harmed at all, and Zhang Xu didn't even sweat at all except for feeling warm.

What is this? Grave fire? It's much more like jumping on the grave. Zhang Xu thought in his heart.

In less than half a minute, the blue flames disappeared without a trace in an instant, and if it weren't for the fact that there was no snow in the surrounding area, it would not have been possible to detect that an incredible spell had just appeared here.

After casting the spell, Grindelwald turned to face Zhang Xu and said, "Sometimes the fire spell is indeed more effective than the cleaning spell. ”

"I can't imagine the Dark Lord wielding his wand doing chores." Zhang Xu nodded and said.

It seemed that after hearing Zhang Xu mention the word "housework", Grindelwald's face showed a hint of nostalgia.

At this moment, Zhang Xu suddenly heard a shrill voice on the ground not far away.

"Oh my god! Did I sleep until summer? ”

Then he saw a snake emerge from the dead grass on the ground.

An hour later.

In front of the hut where Grindelwald lived, a stream of water vapor rose from the open space in front of the house.

"Yes, just keep the output of mana like this, not too big and not too small." Grindelwald said to Zhang Xu, who was sweating profusely.

Although the weather has dropped below zero now, Zhang Xu did not feel a trace of cold, and he was engrossed in controlling the spell without feeling that the clothes inside the robe were soaked with sweat.

Then Grindelwald asked with some curiosity, "What is your wand made of?" ”

What Zhang Xu was holding in his hand was not "facing the enemy here", and a red wand, he introduced according to the wand's instructions: "The body of this wand is made of a tree called 'Dan', and its wand core is the white tail hair of a magical animal called 'Tsui'. This type of wand is specialized in fire, and has a power bonus when used to cast fire-related magic. ”

At this time, a thumb-sized blue flame came out from the tip of the wand, and this flame danced with the change in the size of Zhang Xu's magic output, and at the same time it kept licking the bottom of a casserole.

In the casserole, the snake that had just finished hibernation by mistakenly thinking that winter had passed was rolling with bubbles in the boiling water along with ginger slices, green onions, yams, cordyceps flowers, chicken feet, longan, wolfberry, and tangerine peel.

Another ten minutes passed.

"Lord Grindelwald, I have a question for you." Zhang Xu asked while handing Grindelwald a bowl of snake soup, "Did you invent this blue flame spell?" ”

After taking two sips of snake soup, Grindelwald asked, "Have you ever seen such a fire spell before?" ”

Zhang Xu nodded.

Grindelwald thought for a moment and said, "I suppose you've seen that red-haired kid who often hangs out with Potter use it, right?" ”

"Yes, one of their family's spells is similar to this one." Zhang Xu replied that during the Triwizard Tournament that year, he had seen Ron use the blue Fire Spell.

"They have nothing to do with me." "You've seen the Swedish short-nosed dragon." ”

"Well, its scales are beautiful, and the meat is very good, which is suitable for hot pot." Zhang Xu replied thoughtfully, "By the way, the flames it emits are also blue, which can turn wood and bones into ashes in an instant. ”

Back then, Zhang Xu and Furong did their homework on the characteristics of several fire dragons during the Triwizard Competition, and he had the characteristics of various fire dragons at his fingertips.

"The Swedish short-nosed dragon lived in Scandinavia." "More than a thousand years ago, the Viking wizards living in Scandinavia were inspired by the Swedish short-nosed dragon to invent this blue fire charm.

"Vikings were constantly invading the coast of Europe and the British islands, and Viking wizards followed."

"The Vikings fought a lot with the Celts living on the island of Great Britain, and it was at that time that the red-haired Celtic wizards learned the spell from the Viking wizards they had captured."

"In the library of Durmstrang in Scandinavia, there is a record of this spell."

"And I, on the basis of this spell, have made a lot of improvements, and derived a lot of different spells."

"If it weren't for Nicol Lemedo, Paris would have been burned to the ground."

After Grindelwald said this, Zhang Xu understood the origin of this spell. At first, he was worried that the Weasleys and Grindelwald had something to do with it, and it seemed that it was just a curse.

And in the development of magic and spells, biomimicry is also applicable.

In the wizarding world, no matter what, whether you want to become a hero or a hero, learning is the lowest condition, and learning gods is the basic configuration.

Although Grindelwald was expelled from Durmstrang, this did not detract from his essence of learning God.

Zhang handed the big guy another bowl of snake soup.

For Zhang Xu, learning this magic with a pot of snake soup as tuition is simply a lot of money.