"What alternative?" Pei Chen was interested.

"Do you remember that exclusion zone at the end of the corridor on the fourth floor? That's a plan we designed, and the things in it are the legendary Philosopher's Stone, which has the power of turning stones into gold and immortality......" Dumbledore explained, paying attention to Pei Chen's eyes by the way, and found that the other party's eyes were clear and unfluctuating, so he continued to speak with confidence.

He didn't know how cheap the price of gold was in the infinite space, so much so that Pei Chen still had hundreds of kilograms of pure gold in the storage space on his body now. As for the topic of immortality, for youkai who are themselves classified as immortal, it is as normal as humans need to drink and eat.

If it only has the effect of turning stones into gold and immortality, then the Philosopher's Stone is a worthless thing for Pei Chen, maybe Infinite Space will be willing to pay some small money to buy it?

"We have known for a long time that Voldemort is not dead, but hiding in the darkness and waiting for his time. But there's nothing we can do about it, because he's no longer disembodied, and as you can see, no one can know his whereabouts. ”

"Oh, then I see, so you're going to use this so-called Philosopher's Stone to lure Voldemort?" Pei Chen reacted immediately.

"That's true, but we're more interested in testing the ...... His reality and emptiness. Old Deng sighed. To be honest, he just felt that Voldemort had a connection with Quirrell, and he didn't expect that the other party would be bold enough to enter Hogwarts Castle directly in Quirrell's body.

If he had known the news earlier, he would have been able to kill Voldemort with one blow - to take out Voldemort in this situation, so that he would never have a chance to turn over.

It doesn't take too much, just throw more than two Avada Curses over, and even if Quirrell himself blocks one, the rest will still have to be eaten by Voldemort himself. Although he only has a remnant soul left, he is not a ghost in the strict sense, and he has to kneel even if he eats a spell that directly kills his soul.

"Well, excuse me, Headmaster Dumbledore, I think we have more important things to do now." Professor McGonagall interrupted the conversation with a frown, looking at the corpse on the ground, meaning for sure.

"Ah, indeed." The Whitebeard Wizard took another breath, and sure enough, something happened to the Defence Against the Dark Arts teacher again, could it be that the curse was really so stubborn and terrible, so that no one in this position could never teach for a year without incident?

"Professor Lyle, would you mind giving me your wand? This can be an important piece of evidence, and we can use the flashback spell to check what kind of spell it cast before. Professor McGonagall asked Pei Chen for Professor Quirrell's wand in his hand.

It is said that the wand chooses the master, and after being snatched away by Pei Chen, this wand has been resisting violently, conveying unwilling thoughts, but it has all been suppressed by the strong spiritual force. And in the first moment after Quirrell was declared dead, Pei Chen first noticed that the wand had also fallen silent at the same time.

Tsk, mass-produced things can still have an existence similar to a machine spirit?!

Pei Chen sighed, and there was a faint white mist condensing in this cold temperature. He casually handed Quirrell's wand over, not paying much attention to it.

"We need some more proof...... Belch? Dumbledore said, waving the dazzling Elder Wand of the spell in his hand, and nothing happened. Suddenly, the scene became embarrassing.

"Ahem, it seems that Professor Lyle is not using magical powers......" Old Deng blushed slightly, coughed a few times in disguise, and said, "Backtracking magic doesn't work, there is a strange force preventing magic from taking effect, we need to find another way to ......"

Pei Chen yawned, feeling a little sleepy. But he also understands that no matter when, killing a Hogwarts professor is a very big deal, and it is appropriate to shock the British Ministry of Magic, and without strong exculpatory proof, his plan to explore Azkaban will have to be advanced.

However, he was also interested in seeing what the other method was, so he didn't tell a few people about waiting for the previous large-scale demonic burst energy hedge to dissipate in the air before they could use the spell normally.

After all, it's the power of different systems, and it's normal to stumble on each other.

"Professor McGonagall, please watch here, I need to make a trip to the Department of Mysteries of the Ministry of Magic myself." Dumbledore said, "Soon, back in an hour." ”

Without hearing what the solution of the whitebeard wizard was, Pei Chen couldn't help but be a little disappointed, but cheered up again. Up to now, his interest in this world is getting bigger and bigger, although he knows a lot of things, but this not only does not make Pei Chen have a clear grasp of the essence of the world, but also feels that it is covered with a veil of mystery and weirdness-

Judging from the performance, it should be a low-level magic scene, but the background revealed is too strange, and many advanced fields have made significant progress. For example, the soul alchemy brought out from behind the Philosopher's Stone, the Traceless Expansion Spell and the knowledge of space magic looming behind the Phantom Manifestation.

"This world was a thousand years ago, could it really be the background of the god generation or the world of high demons?"

Pei Chen thought tangledly.

……

……

"This is Mr. Saul of the Department of Mystery Affairs, who is also the investigator of this incident." Dumbledore's speed was indeed very fast, and he came back soon, and brought a middle-aged man with him, and introduced him to Pei Chen, "His specialty is to study the mysteries of time magic. ”

Time magic?!

In an instant, Pei Chen's eyes became very subtle, and he hesitated for a moment before coming back to his senses and shaking hands with the middle-aged man: "Professor Sol, hello." ”

"Ah, hello!" Mr. Sol replied with some hesitation, and it seemed that he was always absent-minded, and seemed very rude. Pei Chen doesn't care much, geniuses, they will always be immersed in their own world, but this does not mean that they are unprofessional, for example, Old Man Hawking only has two fingers left to move, isn't he also the best in the world?

"As you can imagine, we need to have an official witness to see the truth of the matter for themselves, so we brought in Mr. Saul...... Also, the time converter. Dumbledore held out his hand and showed them a small glowing golden timepiece with a long, fine gold chain.

Time Turner?! Pei Chen's eyes widened, there was still such a heaven-defying weapon in this world where he was lying in a big groove? Could it be that Doctor Who or the robot cat are both from this world?

"Actually, it's not as useful as you might think, otherwise it wouldn't have been used for small things." As if noticing the change in Pei Chen's face, Dumbledore explained that both Snape and Professor McGonagall took it for granted, and seemed to agree with this statement.

"But we're not professionals, so let's let Mr. Sol explain it to us!"

"That's right." Professor Saul nodded and took the initiative to take the conversation, perhaps it involved his professional field, and he instantly broke away from his absent-minded state, became radiant and radiant, and talked endlessly to Pei Chen about the mysteries of time-

"The essence of a time turner is to encapsulate a [one-hour reversal spell] in a timer, so that wizards can hang it around their necks and turn it around a few times if they want to reverse it for a few hours. However, the spell of time reversal is inherently very volatile, and although many people have great enthusiasm and fantasies about time travel, this travel is very limited. ”

"Very limited? What do you mean—"

"That's right, as far as we've done so far, the maximum travel time that can be achieved is about five hours, otherwise both the time traveler and the time itself could be seriously harmed." Mr. Thor nodded very seriously and said in an extremely serious tone.

Five hours? There's a fart ...... Ahem, it still seems to be very useful, but compared to the effect of the time machine imagined at the beginning, it is simply a big discount, and people can't help but be extremely disappointed. Pei Chen was the same, his fiery eyes of interest instantly dimmed, and it seemed that he had turned from a fan to a passerby in just one sentence, and he no longer paid too much attention to it.

Mr. Saul couldn't help but feel anxious, and a sense of annoyance at being underestimated for his research: "Five hours is only a basic safe time in theory, in fact, as long as your body can afford it, you can go back as long as you want, but it's dangerous—some wizards try to travel farther in time, but they are all badly injured, and for many years no one knows why the time travelers who have traveled long distances have died on the journey." Since 1899, people have stopped trying because what happened that year not only killed the time traveler, but also disturbed time itself......"

"The Ministry of Magic took great pains to cover it up, and since then, experiments with time travel have been controlled by the strictest laws. In fact, you've already broken hundreds of laws when you used the time turner, and if it weren't for Headmaster Dumbledore's vouch, this one wouldn't have passed the scrutiny. ”

Pei Chen didn't care how severely controlled the time travel experiment was, and when Saul said such a long sentence, he only keenly captured the key phrase in it: "The body can withstand it...... Can you travel time indefinitely? ”

"Theoretically, it's true that Lady Elois Mitubao would have jumped forward for a full five hundred years to cause such a big problem......" Professor Thor nodded, proudly "but this is illegal, the Ministry of Magic forbids anyone to have a private possession of time converters, and almost all of them are kept in the Department of Mysteries." ”

Suddenly, Pei Chen's eyes lit up, at this moment he put the idea of 'attacking the Mysterious Affairs Division' on the agenda very seriously, if there was no way to get such a precious prop through normal means, he definitely didn't mind making a fortune before returning.

How do you look at it, it's a five-star prop or more, right?

Seeing that Professor Thor seemed to want to continue to deliver his tirade, Dumbledore just looked at it with a smile and didn't speak, but Snape couldn't help it, and said coldly: "Everyone, I don't think it's class time now, maybe you can consider finding a room to talk about it later, but it's better for us to finish what we're doing first." ”

Pei Chen: "......"

Thor: "......"

"Okay, so we're ready to go, shall we? Is there anyone you'd like to go along? Dumbledore pulled up the slender and delicate gold chain and asked gently. Then Professor McGonagall and Snape both refused, and the only people who went three hours before leaving were Dumbledore, Professor Thor, and Péchen himself.