Among the students of Hogwarts, there have been school legends such as "Hogwarts Unsolved Mysteries", most of which are difficult questions such as "how often does Professor Snape wash his hair".

In the past two years, a clause has been added to these unsolved mysteries, "How many things are in Zhang Xu's pocket".

Zhang Xu's friends have asked him this question many times, either explicitly or secretly, and he has always laughed and said nothing.

This year, Fleur came to Hogwarts to participate in the Triwizard Tournament, and Zhang Xu's friends also asked her this question, but Fleur said that she didn't know either.

When Zhang Xu took out a box and assembled an inflatable rubber boat more than four meters long from the parts in and out, Harry had already given up on asking this question again.

The cave was filled with a lot of magic from Voldemort.

The wizard's shapeshifter is determined to be unusable, and Dumbledore states that the protection here in this regard is exactly the same as that in Hogwarts Castle, but the key to release the protection cannot be figured out in a short time.

Dumbledore tried to fly over on a broomstick, but he didn't get far before he fell into the lake with a "pop", and he had to swim back to shore.

However, thanks to Dumbledore's own attempt to enter the water, it was confirmed that after destroying the Yin corpse, it was possible to swim through.

Ron then pulls out the dolphin cookies he used in the second game of the Triwizard Tournament, eats the Morphed Dolphin, and tries to swim towards the island in the middle of the lake, only to swim back to his prototype after not far, and ultimately returns to nothing.

According to Dumbledore's analysis, if more than one adult wizard was sitting in the boat prepared by Voldemort, the boat would be attacked by underwater corpses.

Now that the underwater corpses have been cleaned up, everyone will have no problem taking a boat.

So Zhang Xu took out the inflatable rubber boat that he originally planned to use for fishing in the lake at Hogwarts.

Because fishing is forbidden in the Hogwarts lake, this rubber boat has been kept in Zhang Xu's treasure bag.

"Professor Dumbledore sat in that little wooden boat, which was towing the dinghy with a rope." Zhang Xu, who inflated the rubber boat, said.

"There doesn't seem to be enough space for this dinghy for all of us to sit on." Attentive Hermione spotted the problem.

There was room for eight people in the dinghy, and there were nine people in their group besides Dumbledore.

"It's just enough to let Ron hold you." Zhang Xu said to Hermione with a smile.

Regardless of Hermione and Ron, who were teased by everyone, Zhang Xu pushed the rubber boat into the water, and then threw the cable tied to the bow to Fred.

"Go and tie the dinghy to the small wooden boat, I'll have a way to get there." Zhang Xu said to them.

Just as Fred and George tied the rubber boat to the small wooden boat together, and after everyone boarded the rubber boat, they saw Zhang Xu stepping on the water and walking over like an ice skate.

Zhang Xu didn't wear a robe tonight, but a set of dark combat uniforms that were easy to move.

Now everyone can see that Zhang Xu's clothes are similar to a pair of metal exoskeleton equipment, and at his feet is a pair of shoes like a boat.

"It's a really interesting magical item." Dumbledore sighed after looking at Zhang Xu's equipment for a while.

"The latest model of the single-person water upright walking system, referred to as ship-mounted, is unthinkably able to be used here." Zhang Xu explained, "I came up with this idea, but I only have one set in my hands. ”

Two years ago, when Zhang Xu listened to his second uncle tell some stories in the navy, he suddenly talked to his second uncle about the surface walking equipment based on the ship's clothes used by the ship girls in the previous life game.

Out of professional sensitivity, Zhang Xu's second uncle felt that the idea of this ship was good, so he wrote a feasibility report on the new equipment with Zhang Xu. As a result, the relevant departments of the Navy found that this thing looked good, and then began to study.

As a result, before Zhang Xu copied out the ship girl game in this world, there were already a large number of marines equipped with 12.7mm heavy machine guns and 40 firearms on the sea.

It is said that in the near future, there will also be ships used in fishery administration, coast guard, anti-smuggling, aquaculture, scientific research, construction and other fields.

Zhang Xu was embarrassed and wondered if there would be a group of COSers wandering on the water after he made the ship girl game in the future.

After everyone was ready, they soon came to the island in the middle of the lake.

The island in the middle of the lake was not large, the size of Dumbledore's office, and the part that emerged from the water resembled a black stone slab.

On a pedestal in the middle of the island was a stone basin glowing green, filled with an emerald green glowing liquid.

The scene in front of him Zhang Xu looked a little familiar, and he felt that there was a hellish roar and a Gul'dan missing.

"I think Voldemort's Horcruxes are hidden inside." Dumbledore who walked to the stone basin stared at the stone basin and said.

"I'm sorry, Professor." Zhang Xu walked up to Dumbledore and said, "I think the Horcrux is probably no longer in it. ”

Zhang Xu untied the Horcrux detector on his wrist and handed it to Dumbledore, but there was no movement on the detector at this time.

Dumbledore took the Horcrux Probe, his face turning serious.

Dumbledore fiddled with the detector and found that it was reacting to Harry Potter's brain, indicating that it was working properly.

At this time, Harry also noticed that the Horcrux detector in his hand was unresponsive, and walked over to report the matter to Dumbledore.

Dumbledore thought for a full five minutes, and finally made up his mind, "I think our last clue is in this stone basin." ”

"What's in the basin?" Harry asked.

"I'm not sure." Dumbledore said, "Still, it would be something more worrying than blood and corpses. ”

At this time, everyone gathered around the stone basin and observed the liquid in the basin.

"I don't think it's any vegetable juice in there." Neville said.

Then he took a short silver-white rod for drug testing and stretched it out into the stone basin, only to find that the rod seemed to be blocked by something invisible, unable to touch the green liquid inside.

Next, everyone came up with all sorts of ideas.

But no matter how you put your hand in, divide it, scoop it dry, or drain it, it doesn't work.

Nor can you use spells such as vanishing spells to make it disappear or change its properties.

The stone basin and the base, as well as the ground of the island in the middle of the lake, are also very solid, and everyone can't help but overturn the stone basin.

In the end, Zhang Xu couldn't blow it up with a grenade.

"If I'm not mistaken, we have to drink it so we can empty the stone basin." Scarlet sighed and said, "It's a magic invented by Slytherin, and there's no other way to do it than to drink it." ”

"But it's obviously a poisonous potion inside, and you'll die if you drink it." Fleur said nervously.

The people present were all her and Zhang Xu's friends, and it was not a good thing that the one who died because of drinking potions.

"Oh, I'm sure it won't work that way." Dumbledore said lightly, "Voldemort wouldn't want to poison anyone who came to this island. ”

"That's not going to work, Professor." Zhang Xu stopped Dumbledore who was walking towards the stone basin, "Even if these potions don't kill people, they will definitely cause people great harm, and maybe all their magic power will disappear." And it's very likely that the Horcrux isn't in it, so the price is too great. So we had to think of something else. ”

"If you just drink it in your mouth and don't let the potion work, will you make the stone basin empty?" Hermione said.

"Do you have any methods?" Harry asked nervously.

"A lot of potions, like Muggle medicines, need to be absorbed by the body before they can work. If the potion is excreted before it is absorbed, can poisoning be avoided? Hermione thought about it.

"The esophagus is in the middle of the neck, and there is no way to intercept the potion that is being drunk into the mouth. So can you make an opening in the stomach, so that the potion will flow out of the body immediately after entering the stomach? ”

Hermione said as she used her wand to draw an anatomy of a human digestive system in the air. Then he motioned for an opening in his stomach so that the potion he drank would flow out immediately.

The wizards next to them were stunned, they didn't come from a medical family like Hermione, and they knew enough about the structure of the human body.

Dumbledore, who had wanted to sacrifice himself to drink all the potions, noticed that his stomach was aching.

"There's another way," Hermione said suddenly, very shyly, "let the potion drinker swallow a long plastic bag into his stomach first, the opening of the plastic bag is in the mouth, and when he drinks the potion, he will pour it into the plastic bag, so that the potion will be isolated by the plastic bag and will not be absorbed." Finally, just take out the plastic bag containing the potion. It's just that there will be some discomfort during the period. ”

Looking at Hermione's magic diagram and explanation, coupled with Hermione's shy expression, Zhang Xu and Fleur's faces suddenly turned red.

This method is no stranger to either of them, and it can be said that they are very familiar.

Because Hermione's method is the same as the principle of the set.

Just when the wizards were shocked by Hermione's two methods, Zhang Xu suddenly said, "Actually, let's just find a sheep to drink these potions." ”