This is what Ravenclaw looks like.

Andrew never thought that he would have the time to jump into the Black Lake one day, especially in winter, but after getting underwater, he found that it was not as difficult as he thought.

The heating potion made his body feel extremely hot, which allowed him to quickly adapt to the low-temperature lake water - in theory, the lake water that should be bone-chilling now became a coolant to normalize his body temperature, even allowing him to He felt a little comfortable...

'Damn it, how did those guys prepare? They even made special potions in the past few days...'

He held the rope made of water in his left hand, and cast a spell on his shoes with his right hand - as an obvious pulling force came, he began to continue to use water to transform into a rope, making sure that he would not lose his way.

Thanks to the already heavy iron shoes, Andrew sank very quickly. It wasn't until the dark lake water below became a little shiny that he started to use the deformation spell on the shoes again to ensure that he The speed decreases.

“This visibility…”

Andrew complained under the Bubble Curse.

He waved his magic wand and began to collect seaweeds and use them as raw materials to make fluorescent herbs (he has not yet studied more effective lighting techniques, so he can only use the herbs he has practiced this year to replace them).

Although the individual brightness is not that satisfactory, a large section combined together with a piece of driftwood that has become lighter, held by Andrew in his hand, looks like a large ball of balloons, which looks particularly bright on the dark bottom of the lake.

Andrew used transfiguration to lengthen the rope, then waved his wand to deform the undercurrent and propel himself, and began to quickly search the bottom of the lake.

He didn't expect any treasure. The most important thing now was to find all the people as soon as possible.

Fortunately, his image was quite conspicuous in the dim bottom of the lake - within a few minutes, he was called out.

"Man, what's the point of losing this image? What did you find...ah, Taylor?"

"It's me..."

Seeing the three people on the other side using the Bubble Charm and lighting the wands, I got angry, "Who told you to go into the Black Lake in the winter! If someone hadn't come to report it, I'd be afraid that I would have to come down and retrieve the body!"

The other party basically had no intention of resisting - which made Andrew feel a little less angry.

He ordered the other three to follow him, and then started looking for the next group.

This time it was slower, it took about five or six minutes.

The Hufflepuff group was more honest, but Andrew didn't intend to let them stay underwater, just let them swim all the way up the rope.

'Hell, I'm almost halfway through my potion time...three sets left...'

He was a little anxious, but soon a huge ball of air floated over - even from a distance, he could feel that the water flow was controlled by someone.

Among the huge air masses, the figures of Dumbledore and nine students were particularly attractive.

"Tyler?"

Dumbledore's voice was slightly distorted through the air mass, "Why are you down here?"

How did I get down?

It wasn't you who asked me to...

Andrew finally calmed down - he suddenly remembered that Dumbledore's order to him was to go to the Black Lake and stop them.

So, principal, are you personally here to get people?

As soon as he thought about it, he was surrounded by the bubbles.

Dumbledore looked at him with a kind expression, "Have you asked how many people came down?"

"Fifteen, five in the three-person team, if they remember correctly..." Andrew untied his head-bubble spell, "The remaining six are floating up along the rope."

"Well, send this batch up first, and we'll look for them later."

Dumbledore nodded, the bubbles separated, and the nine people began to float along the water rope made by Andrew.

"It's really..." Andrew sighed, "There's a new trick every day..."

"This is the existence of youth and vitality. If they are lifeless every day, they don't look like young students."

Dumbledore praised, and Andrew wanted to roll his eyes.

Who is the deadbeat, the principal!

You didn't notice the trouble I caused. If you find out, you will know what vitality is!

But this kind of words that are beneficial to the astronomy tower obviously cannot be shown off. He just separated from Dumbledore and started searching along the bottom of the Black Lake, and then followed Dumbledore towards a fixed location.

Soon, Andrew saw a huge stone with something like a mural on it - he didn't know what the waterproof paint was, but he could see very clearly that it was a group of fishmen catching something that looked like squid.

Soon, they came to a simple underground residence - stone huts were walking around in the forest, with some algae-like things hanging on them as decorations, and among these rough buildings, there was a mermaid-like existence. Head out.

Yes, mermaid-like - because they completely subvert Andrew's understanding of mermaids.

Except for their human heads and fish bodies, they look nothing like the legendary fish-men. Their skin is rough, their teeth are crooked and leaking, and they have necklaces with messy pebbles around their necks. There are two most terrible things about them - first, they are ugly; Two, the hair is green...

They obviously knew Dumbledore. After a roar that Andrew couldn't understand, a particularly strong mermaid appeared and leaned half of his body to communicate with Dumbledore.

…

"No more. The mermaids said they only felt those people... It's a perfect ending."

Dumbledore smiled, and the bubbles they were in began to rise rapidly. "The squid that prevented them from drowning was actually attracted by some potion feed...The method they thought of was really..."

…

Feed, potion…

Andrew was helpless to complain—could these people be serious? They actually thought there was a secret treasure under the Black Lake?

By the way, isn’t that why someone dug a lake out of nowhere in front of me? That would be too funny.

The Black Lake and the Secret Treasure…

If he had known that the students were so stubborn, he would have asked Dumbledore to dig him out and finish the job, saving them from worrying about it!

Soon, the bubbles rose, and Dumbledore reappeared in front of everyone with Andrew.

The unlucky ones who got into the water were busy using magic to dry each other out, but to no avail - there was no special spell to deal with it.

Fortunately, the potion still seemed to have some power, so they didn't look so embarrassed.

"You handle the confinement, Tyler."

Dumbledore nodded towards Andrew, then turned and left.

'I? ’

Andrew, who had just breathed fresh air, was stunned for a moment, and then his whole body felt bad.

No, principal, it’s okay to run away normally, but you’re running away now?

However, when Dumbledore left, everyone looked at Andrew seriously - no, buddy, are you serious?

Becoming a prefect in second grade?

Are you kidding? How did Hogwarts become like this!