On the shore, Ludo Bagman shouted excitedly in a loud voice: "Look, Miss Granger successfully knocked out a salmon. The salmon was at least two feet long! Is this a rare talent?"

Fred and George laughed and said, "Hermione won't be happy to hear this."

"Oh, Professor McGonagall reminded me," Ludo Bagman continued, "That's the power of ancient runes. To be honest, I don't know much about this subject. Isn't it a translation subject... And regarding the previous practice of the Ugadu warrior giving up his wand, the judges discussed and believed that since the rules do not explicitly state that the wand cannot be abandoned, it is within the permitted range, although it will cause difficulties in recovery."

"Let's get back to the game. The warrior of Ilvermorny has successfully challenged the purple level. Next he will face a choice: an amulet, an ice bomb, or - look, he chose the second one, which can freeze a small area of ​​lake water."

"Krum of Durmstrang has already approached the area where the Grindylows exist. His unsuccessful shark transformation only gave him two more gills and a mouthful of shark teeth. To be honest, I don't hope that the row of fine fangs in his mouth will come in handy. Back to the point, Krum is indeed an international Quidditch star. His excellent physique allows him to swim forward with his wand in his mouth, not to mention that he accidentally found a golden gem midway, which made him grow to two feet..."

"Oh, bad! He was surrounded. A dozen Grindylows found him. If it was normal, these little things couldn't do anything to him. But now it's different from the past. Can he still cast spells flexibly? Yes, he wisely chose to avoid and gave up the blue level..."

In the Black Lake, Hermione was facing a choice.

After she successfully solved the puzzle, a hollow voice told her that she could get a reward. The options included: any question within the rules; the terrain of a small area around her; and passing a message to teammates for ten seconds.

Hermione was very excited about each option. After weighing the pros and cons, she chose the one she needed most at the moment - the terrain of a small area around.

The hollow voice repeated her options. After a few seconds of silence, a map appeared in the air. Hermione's eyes lit up and she firmly remembered the golden and purple spots on the map.

On the other side, Harry completed the Human Shield Charm a few minutes ago - he almost repeated the development process of this spell. Fortunately, he went to Classroom 7 diligently in the past few days, and Professor Hepp's memory had nothing to do, so he explained it in more detail.

His Human Shield Charm looked like a deformed Bubblehead Charm, but it covered the whole body, which made his movements seem much slower than normal, but anyway, he barely gained the ability to walk out of the protective shield.

After thinking for a few seconds, he stretched out one hand from the protective shield and touched the cold lake water. The ball fish was finally tired and ran to rest somewhere. Harry took a deep breath and stepped into the water. He was like a deformed bubble that was squeezed. His limbs were still close to his body, and his head, chest and abdomen were bulging. If he lay on the ground, he would be no different from a toad.

Maybe it would save more effort, Harry thought with a smile.

He swam up for a distance, just like he often did in Quidditch games - occupying a high position and looking down at the golden snitch - but this time he was looking for the target in the water.

In front of him was a dark, hazy and strange scene, with large areas of black and dark green intertwined, soft algae swaying like strips of cloth, and some shiny pebbles mixed in the dark mud, which was not what he was looking for.

He first discovered the blue light that flickered like stars. The wisdom level... Well, Harry remembered the location and decided to look for it again. This time he found a purple light. This was a level that required a battle.

Harry hesitated for a while, but decided to challenge the purple level. He successfully came to the purple house. The process of entering the air from the lake gave him goose bumps. Then he suddenly felt something sweeping across his brain. The effect of practicing brain occlusion appeared, and he immediately resisted the invasion of this unknown force.

"Huh..." Harry breathed a sigh of relief. He was finally not attacked.

He walked into the purple house and searched it thoroughly. He took it and found nothing. He was stunned. What was going on... A test? Harry was puzzled until he suddenly thought of a possibility... Could the invading force just now be a test?

Harry relaxed his brain consciousness and waited quietly for a few seconds. Then, in a flash, he found himself in a spacious square. A hippogriff that was kneeling on the ground stood up and looked at him threateningly with its wings spread.

Harry grinned. This is a half-horse, half-bird creature that looks a bit strange, but Harry is friends with a hippogriff named Buckbeak, so he is no longer surprised, and he likes their natural fur transitions: from dark gray, bronze, red and white, to shiny chestnut, and finally black.

Bow, don't blink, don't dodge... Time seemed to have returned to the last school year, and Harry quickly became friends with it. But it insisted that Harry ride it for a circle. Harry was worried about how to pass the level. After hearing this suggestion, he tried to do it. When the hippogriff landed smoothly, the sound of passing the level also appeared.

"To pass the level peacefully, please make a choice: amulet, protect you from free movement underwater for half an hour; squid ink, block your vision; fake wand, release the Shield Charm three times."

Harry blinked and stared at the hippogriff standing beside him. He suddenly thought of a good idea.

"I want the amulet." He said.

A few minutes later, he returned to the protective shield and successfully picked up a golden gem. He grew taller. He felt that his magic power was more active and he could use some simple magic.

"I am more confident now." Harry thought, put on the amulet and cancelled the immature human armor charm.

He grabbed the wand, tucked a water snail the size of a quaffle under one arm, took a deep look at the glittering protective shield, and walked into the black lake. His body first felt cold, and then became warm. It was the amulet that worked. It worked surprisingly well. Harry stretched his body freely in the water, feeling very cool and comfortable, and his body became very light.

Harry measured it with his wand. His holly phoenix feather wand was eleven inches, which means he was about one foot seven or eight inches now. After spending some time, he successfully found the colorful fish wandering near the protective cover. It looked very tired. Maybe it was an illusion, but Harry always felt that there was a small bump on its head...

"Come on!" Harry shouted, and the colorful fish looked over immediately. Its eyes almost popped out. Compared with the colorful fish that was only one foot long, Harry had an advantage at this moment.

When he saw the colorful fish rushing towards him with its long legs, Harry smiled happily.

Half a minute later, the two legs of the colorful fish were tied up, and Harry was also panting, but he was quite satisfied with his results. He threw the water snail that was thrown aside next to the colorful fish. It stopped struggling, looked at Harry twice, and lowered its head to enjoy the food. In the next ten minutes, Harry made a simple knot with water grass and put it on the body of the colorful fish.

At this moment, twenty minutes had passed since he woke up.

Then he raised his wand and untied the tangled legs of the ball fish. "Take me with you for a swim, and I won't pursue the matter of you pestering me." Harry approached him and said.

He didn't know whether his words worked, or the gift of greeting, or whether it just wanted to escape, but the ball fish did move. Harry hurriedly grabbed the reins and wand woven with water plants, and the next second, he was pulled forward.

"Wow!"

Harry moved quickly in the Black Lake, while using his wand to fiddle with the head of the ball fish to control the direction. His goal was those golden gems. Although he was delayed for some time, he believed that his speed would be greatly accelerated next.

...

In the center of the Black Lake, under the deep and steep cliffs, there is a sunken rock forest. It is the deepest part of the entire Black Lake, where a small tribe of mermaids live.

They have a unique culture and language, as well as the ability to tame Grindylow. This mermaid has obtained the right to inhabit the Black Lake, and all the successive headmasters have promised not to invade here at will.

But in any case, the Black Lake is part of Hogwarts. In this competition, Dumbledore and the mermaid leader reached an agreement that they would become part of the second project.

Felix was sitting in a small square, surrounded by some strange little houses, and many mermaids were watching him from afar.

The mermaid leader was enjoying the gift he had given him - a waterproof magic phonograph.

The mermaid leader was ten feet tall, wearing a shark tooth necklace on his head, and was surrounded by some mermaid guards holding forks, glancing here from time to time.

"I am very satisfied." The mermaid leader said in a low and hoarse voice.