The long, winding stone corridor was silent and meandering, with the sound of droplets of water dripping down the walls in addition to the sound of their own footsteps.

The corridor descended downhill, reminding Harry of Gringotts.

His heart throbbed, and he remembered the dragons who were said to be guarding the vaults of the Wizard's Bank.

If they come across a dragon, a large dragon that has grown into a full-fledged dragon, Noble will be tough enough to deal with, "Can you hear any movement?" Ron asked quietly.

Harry listened.

There seemed to be a soft rustle and clanging sound ahead.

The inexplicable environment was terrifying, but the presence of another person beside him, Sherlock, the Prince of Spells, made Harry feel safe.

They came to the end of the hallway, and in front of them was a brightly lit room with a high vaulted ceiling.

Countless small birds that were as brilliant as jewels flapped their wings and flew around the room.

There is a heavy wooden door opposite the room.

"Do you think they're going to attack us if we go through the room?" Ron asked.

Asinsha and Hermione glared at him at the same time, thinking that they should not say such unlucky things at such a time, those birds were actually a key, although they were flying leisurely, but if they attacked suddenly, they could not be underestimated, because the front of the key was also very sharp.

"Obviously, to find out what these little things do, you have to go through this clearing." Sherlock glanced at the dense airstripe of winged key creatures.

Harry took a deep breath, shielded his face with his arm, and sped to the other end of the room.

He thought that at any moment there would be a sharp mouth and claws to tear him apart, but he was safe.

Unscathed, he came to the door and pulled the handle, which was locked.

Sherlock came over with the other three, and Harry pulled and pushed, but the door didn't move, and Hermione tried her Alaho Cave Spell to no avail.

"What should I do?" Ron asked.

"Don't you notice that these flying keys above your heads are actually the key to opening this door, and if you look closely, you can see that these little things are keys with wings." Sherlock looked around the room, while Ron and Hermione stared up at the flying swarm of keys.

"But there are hundreds of keys on there." Ron scrutinized the door's wedge.

"We're looking for a big, antique key, probably silver, shaped like a doorknob." Harry Ron Hermione began to pick up the broomstick next to him and rushed into the dense group of keys, carefully searching for the key to the door.

Sherlock and Asinsha watched quietly from the ground, it was a hard job, and instead of flying blindly to look for it, it was better to stand down and observe carefully, looking for the key they wanted.

Sherlock watched carefully, and Prometheus flew around with the keys, and the iron keys, as if afraid of Prometheus' heat, immediately vacated a large area, and in a moment found a large silver key hidden among the keys, its wings drooping, as if it had been grabbed and rudely stuffed into the keyhole.

The golden wand pointed at the key with sky blue feathers, a magic hand was directed to cast, the somewhat listless key was instantly grasped tightly by an invisible hand in the air, and after a few struggles to find it useless, the key was handed to Sherlock, apparently it was used to this rough way.

Suddenly, the key to the sky seemed to be crazy towards Harry, Ron, and Hermione flying in the sky, Asinsha was very worried about Hermione's safety, and the tip of Sherlock's golden wand released a large white cloud.

Zeus's appearance was like a large ball of soft marshmallows, quickly rising into the air and replacing the three little wizards, and all the keys flew into Zeus's clouds, unable to move, as if entering a quagmire.

The three of Harry disembarked from their broomsticks and gathered around Sherlock.

This made their worship of Sherlock suddenly increase to another level.

"This should be it." Harry asked, somewhat uncertain.

"Just try it." Sherlock picked up the key, slipped it into the keyhole, twisted it hard, yes, it was.

With a click, the door lock flicked open, and the key flew away again.

It was caught twice in a row, and looked emaciated.

"Are you ready?" Sherlock took the doorknob in his hand and asked them, and the group nodded, and he pushed the door open.

The second room was pitch black and nothing could be seen.

But as soon as they stepped inside, the room suddenly became brightly lit, illuminating a shocking scene.

They stood on the edge of a huge chessboard, with black pieces in front of them, all taller than them, as if carved from something like throwing black stone. At the other end of the room, facing them, were white chess pieces.

Harry, Ron, and Hermione trembled with fear, and the towering white chess pieces had no facial features on their faces.

Sherlock held his sister behind him and looked forward.

"What now?" Harry whispered.

"It's not obvious?" Ron said, "We have to play chess to get to the other end of the room. ”

They saw a door behind the white pieces.

"How to play the law?" Hermione asked nervously.

"In my opinion...... "we have to act as pawns," said Ron. ”

Sherlock touched his chin, "But it's a pity that my skills and gameplay of wizarding chess are average, are there any of you who are good at this?" ”

Ron volunteered, and Harry agreed, saying that neither Hermione, nor Asinsha, nor Harry, had never won a game of wizarding chess with Ron.

"Okay, but we can also do it another way, since there are chess soldiers in the way, why don't we just destroy these chess? ……”

Harry and the others were stunned, looking at the tall chess pieces, not knowing what method Sherlock said would be used to destroy them.

"Zeus is up to you."

"Okay Dad."

Zeus floated to the top of the chessboard, his white body slowly grew larger and thicker, and also changed from white to black, Zeus appeared to be angry, and black cumulus clouds enveloped the entire chessboard.

"Big Thunder!"

Zeus shouted, and countless bucket-thick thunderbolts slammed into the chessboard, turning both white and black chess pieces into exploding pieces of rubble.

"Boom!" Just a burst of stone landed on Ron's head, directly knocking the other party unconscious, and there was a big red envelope on his forehead.

"Oh, I can't control it, it's a little powerful." Zeus floated back apologetically, while Harry was worried about Ron's injury, the stone was the size of an adult's fist.

"He fainted, what to do." Harry asked anxiously.

"I can only let him stay here for the time being, Harry, you can stay and take care of him." Sherlock said.

"What? I! But ......"

Sherlock patted the other party on the shoulder, "Don't worry, with me, no one will take the Philosopher's Stone." ”

Harry swallowed as he looked at the ruined chessboard, and Sherlock left with Asinsha and Hermione, leaving only a regretful Harry to take care of Ron, and didn't care if Harry wanted it or not.

"What do you think will happen next?" Hermione hurried to catch up with Sherlock.

She and Asinsha didn't think there was anything wrong with leaving Harry there, but it was the right thing to do, and someone had to take care of Ron.

"We've passed Sprout's trap, the devil's net, and it's definitely Flitwick who enchanted those keys, and Professor McGonagall has deformed the pieces to bring them to life, leaving Quirrell's magic and Snape's below." Sherlock answered Hermione's questions as he walked.

They came to another doorway.

Pushed the door open.

A disgusting stench hit their noses, and they had to lift their clothes to cover their noses.

The two girls' eyes were also filled with tears, and through the blurred teary eyes, they saw a troll, even larger than the one they had fought last time, lying motionless on the floor in front of them, unconscious, with a large bloody lump on its head.

"Great, we don't have to fight this troll anymore." Hermione whispered.

They cautiously straddled the troll's thick legs.

"Hurry up, I'm out of breath." Asinsha complained.

Sherlock opened the next door, and for a moment the two girls couldn't look at what was waiting for them next, but there was nothing terrible here, only a table with seven bottles of different shapes lined up.

Seven bottles contain seductive liquids that seem to contain endless magical powers, each revealing a mesmerizing color.