According to what Dumbledore said, Ivan sensed the traces left by magic.
But feeling nothing, he blinked.
Looking at the expressions of Sirius, Harry, and Hermione, they should be the same as themselves, not knowing what the traces Dumbledore was talking about.
It can be seen that the strength gap between them and Dumbledore is very large.
"You three don't mind getting wet, do you?"
"It's okay, we don't mind!" Ivan, Harry, and Hermione shook their heads hurriedly.
"Very well, the tide is rising now, and the sea will get deeper and deeper. We must hurry up, let's take the risk." Dumbledore turned his head and continued to order, "I'll go first, and the three of you will follow." Behind me, Queen Sirius. As for Kreacher, you go to the cave and wait for us."
After some preparations, they started to act.
Dumbledore, suddenly as agile as a young man, slid lightly off the pebble into the water and swam towards the dark crevasse below.
With his wand in his mouth, he was swimming in a perfect breaststroke.
Ivan, Harry, and Hermione also hurriedly followed, with Sirius behind them.
The water is freezing cold in winter and everyone feels bad.
Especially Aiwen, he had too many magic books in his arms, and after his clothes were soaked in water, they became bulging and heavy, dragging him down.
He took a few deep breaths, smelling the pungent smell of salt and seaweed.
Then he sank to the bottom, struggling to find Dumbledore ahead of him in the water, and the narrow gap in the depths of the cliff.
But he didn't see anything, not even Harry and Hermione, who were supposed to be beside him, there seemed to be a strong suction in the depths of the sea, like a bottomless black vortex, pulling him to the depths drag and drop.
In the dark and cold sea, Aiwen was alone and helpless, he couldn't even breathe.
Just when he was about to lose his hold, someone grabbed him.
It was Sirius, with great strength, pulling Ivan to swim quickly in another direction.
Soon, they entered the gap deep in the cliff, and the gap turned into a dark tunnel. They went up quickly in the secret passage, and Aiwen was able to breathe again. The sea water stopped here, and it didn't fill the entire secret passage, but only reached the chest.
The tide is now rising, and if we delay for a while, this place will definitely be filled with sea water.
"Are you okay, Aiwen?" Sirius patted Aiwen's shoulder and said worriedly, "Don't be too reluctant, I saw you falling behind behind."
"I, I'm fine!"
Ivan was panting, and Harry and Hermione hurried up to meet them. Because of the extreme cold, the three of them were all pale from the cold, shivering in the chest-high sea water.
Not far ahead, the end of Dumbledore's wand was glowing bright gold, and he was looking around. The slimy rock walls on either side of the dark passage were only three feet apart, gleaming wet like tar.
Dumbledore didn't say anything, just waved his hand, motioning for them to follow.
Going a little further, a fork began to appear, and Kreacher was not here. They didn't know which direction to go, but Dumbledore turned left without hesitation.
They continued to follow Dumbledore. The temperature in the cave was much lower than outside. Because of the absence of sunlight, the already biting sea was even colder. Their numb fingers grazed the rough and wet rocks, stumbling forward in the sea.
At the end of the dark passage, Dumbledore had stood up from the water, his silver-white hair and black robe glistened with water.
They swam there and found steps leading to a large cave.
Ai Wen strenuously climbed the steps, and the water splashed down from his soaked clothes.
He finally walked out of the sea, the air around him was silent and cold, and he couldn't help shivering.
He saw that Kreacher was already standing in the middle of the cave, talking to Dumbledore beside him.
Dumbledore's wand was held high in his hand, and while talking in a low voice, he slowly turned in circles on the spot, carefully inspecting the rock wall and the cave ceiling.
"There is no doubt that this is the place." Dumbledore said briefly, "These walls are enchanted, and they are traces left by Riddle"
Ivan saw Dumbledore continue to spin slowly in place, apparently concentrating on studying something he couldn't see, studying the traces left by Voldemort.
"That's right, Kreacher! I know this is just the vestibule, the entrance hall!" Dumbledore whispered, "We need to go inside. What is blocking us now is the mechanism set by Voldemort, not the obstacle set by nature."
Dumbledore approached the cave wall and stroked it gently with his fingers.
The wand in his hand shook slightly, and he whispered a strange language that Ivan had never passed. It seemed to be a spell, but it didn't seem to be.
Since nothing happened, Dumbledore walked twice around the cave from the left, touching the rough walls as best he could, pausing occasionally to run his fingers up and down somewhere.
"Teach, professor?"
Ivan took a few steps forward. Dumbledore was identifying the magical traces left by Voldemort. He wanted to know how Dumbledore did it. Before today, he had never seen any wizard solve a problem like this: only See with your eyes, touch with your hands, and feel with your heart.
It's completely a master's style, not like other common low-level wizards who use spells to make ping-pong-pong and smoke.
Ivan wanted to learn from Dumbledore how to identify the magic traces left on objects, but then found that he didn't have the energy to do these things at all.
He was shivering all over because the cold had penetrated into the marrow of his bones.
Sirius, Harry, and Hermione beside him were not much better, they were shaking uncontrollably from top to bottom.
Aiwen saw Sirius pull out his wand, trying to use magic to warm them up, but it was useless, because of the cold, his teeth were chattering, and his magic was invalid.
"Oh, sorry, I'm so sorry, I forgot!" Dumbledore noticed them, and he pointed to the four of them in turn with his wand.
Following Dumbledore's movements, Ivan felt that his whole body became dry and warm immediately, and his clothes didn't even have the slightest trace of being soaked by sea water, as if they had been hung in front of a raging fire to dry.
"Thank you!" Ivan, Harry, and Hermione said gratefully in a hurry, and they saw that Dumbledore turned his attention to the solid cave wall again.
He didn't try any other magic, just stood there, staring at the cave wall intently, as if there was something extremely interesting written on it.
"Where is Regulus?" Sirius suddenly shouted, "Kreacher, tell us how to get in?"
There was a hint of impatience in his tone, they had already wasted too much time, and the dark and eerie cave in front of him made him even more confused.
This is not something he is good at, he would rather fight a battle with the corpse than stay here(.)