While eating, Ron ate grilled fish and asked, "Zhang Xuan, you have been working on your magic defense device all day long, what are you doing now?" ”

"I'll show you!" Saying that, Zhang Xuan took out his belt and came out and said, "You see, this is the defense device I made, but now I have made a small part!" ”

"A belt?" Hermione was a little surprised.

Harry and Ron looked at each other, then looked at each other with pity in their eyes, "Good job! ”

Zhang Xuan shook his head and smiled: "This is part of the magic defense device, and it is the early warning device in it!" ”

Saying that, Zhang Xuan pointed to the buckle and said: "This is a magic power supply device, there is a gem on it to provide magic power, and the belt is a speed measuring device, and if there is something rushing over in the detection channel, it will call the police!" ”

Harry said, "Sounds good, can you give it a try?" ”

Ron's eyes also lit up: "Let's try it!" Zhang Xuan didn't refuse, and immediately put the belt in the distance.

"This magic detection range is twenty yards, we can give it a try and release a magic within this range!" Zhang Xuandao, as he spoke, he pointed at his belt:

"Flames beckon!"

I saw a flame flying towards the belt rapidly, and then dissipated within a meter of the belt, and the gem on the belt only flashed red, and there was no other reaction.

"This~" Harry looked at each other,

Zhang Xuan said: "Because it only has a speed measurement device now, and I haven't studied the defense device yet, did you see the red light just now?" Indicates that it has detected a dangerous approach! ”

"Are you saying that you can only shine with the gems on your belt now, and you can detect danger coming?" Ron said with a strange expression, and Harry was also puzzled.

"I said, this is only a part of the defense device, it still has a defense device that has not been added, otherwise a magic shield will appear just now!" Zhang Xuandao.

It was a problem to explain to these children, but Hagrid and Hermione reacted: "You mean this red light is a signal to start the next step?" ”

"That's right! Just now it detects that the magic is coming, so it will automatically alarm, as long as the defense device is connected, then it can activate the defense magic to protect yourself! Zhang Xuan said with a smile.

"So, you're a good thing to prevent others from sneaking up!" Hermione's eyes lit up: "It's equivalent to one more means to save your life!" ”

"As long as it is developed, I think the Aurors of the Ministry of Magic will like it very much!" Hagrid was also amazed,

Now the only defense item in the wizarding world is the wizard's robe, and the only other thing you can do is to pray to God.

"Then when will this thing be fully ready!" Harry and Ron also reacted,

Especially Harry, who was Voldemort's enemy, was also very concerned about this kind of life-saving thing.

"It's hard to say!" Zhang Xuan shook his head and said: "One is that the powerful defensive magic consumes more mana, and I don't have too many defensive magic, and the other is that the device is too big and not convenient enough!" ”

"Why, isn't your speedometer device getting smaller?" Hermione Road,

Zhang Xuan smiled: "This is because the speed measurement device is simple and the magic power consumed is also small, Hermione, you have also seen the speed measurement device on the road, right?" These things are not big! ”

"I see!" Hermione said suddenly, looking at Zhang Xuan eagerly: "I didn't expect you to be able to make these things while maintaining your grades, I'm a little interested!" ”

Zhang Xuan put away his belt and said: "I used a belt woven by the fusion of cordoba spider silk and screaming grass, which can continuously emit ultrasound waves and detect movements in all directions, but it took me nearly a semester to complete these!" ”

"Cordoba spider silk and screaming grass aren't cheap!" Ron said: "I didn't expect Zhang Xuan, you have a lot of pocket money!" If it fails, these things will be lost! ”

"Alchemists are very expensive!" Zhang Xuan also sighed when he heard this: "No wonder there are so few alchemists in the world, it's really because they spend money like running water!" ”

Zhang Xuan had already secretly gone to Gringotts to change the money a few times, and he also went to Nesario to get a lot of things to buy, so that he had enough money to support his research.

Engaging in alchemy is not the same as engaging in theoretical research in the imperial examination, which burns money very much, but once it succeeds, it is like getting a cornucopia cash cow.

Zhang Xuan's life is still unruly, but after Professor Quirrell's death, Professor McGonagall took on a Defence Against the Dark Arts class, and instead learned a few Defence Against the Dark Arts techniques.

One of them is 'get rid of your weapons.'"

As soon as the spell comes out, the opponent's weapon will be knocked out, and if you increase the magic power, even the opponent himself will be knocked away, but it is quite a rough magic, which is essentially a competition for the size of the magic and who strikes first.

However, Zhang Xuan's eyesight and precision are amazing, and he often launches spells directly on the opponent's wrist to win with minimal magic, and this time Terry was knocked out of his wand like this, but he didn't have any problems at all.

"Well done, Mr. Zhang Xuan!" Professor McGonagall laughed, "Next group, Kagurin vs. Ciel!" ”

After everyone finished practicing one by one, the lesson ended.

Hermione said, "Your spell is so fast! Any tips? ”

Terry Harry Ron and the others also hurriedly gathered around, wanting to hear Zhang Xuan's secret.

Zhang Xuan smiled: "You guys were too nervous when you practiced, so there was a little stammering, calm down and relax, so that the spell will be more proficient and smooth!" ”

"Neville, it's you!" Ron laughed, Neville had just called two spells before he succeeded, and when he heard Ron's words, Neville unconsciously lowered his head.

"But in addition to that, you also have to feel the magic fluctuations of this 'except your weapon' in advance, so that even if the spell is pronounced slowly, the magic will be launched in advance!" Zhang Xuan instructed.

This magic and spell, such a long time of observation, reminded Zhang Xuan of the cultivation method of Tianshan Folding Plum Hand, and the mantra of Tianshan Folding Plum Hand is also extremely awkward, but it is easy to pronounce with the moves.

"Magic fluctuations?" Hermione muttered.

The rest of the people were also puzzled, they didn't have such a deep understanding of magic, and their knowledge was not as extensive as Zhang Xuan's, and they couldn't appreciate the mysteries.

Only Professor McGonagall walked past Zhang Xuan with a different face, and said in his heart that Mr. Zhang Xuan didn't expect to discover the mystery of magic so soon, and I believe that there will be another master of spell-free casting in the future!

If the wand is the magic ignition device, the key to initiating magic, then the spell is the lubricant, the turbo that speeds up the release of magic.

Wandless spellcasting is based on the individual's mana concentration, while spellless casting is based on personal proficiency.

In the original book, Voldemort repeatedly unleashed magic without reciting spells, and did a series of magic to Harry, such as removing your weapons, Adava's life, and cutting out your heart and bones, but he still needed the Elder Wand.

Many of them directly cast spells such as fainting and cleaning up, and Dumbledore even waved his wand every time he ate, the food appeared on the table, and no spells were used.

And Zhang Xuan is still far from reaching this point, he can only work hard every day to study, as the so-called no accumulation of steps can not reach thousands of miles, no accumulation of small streams can not become rivers and seas, a little progress every day is also very gratifying!