Conan tied him tightly with the rope that "Mamiya Masashiro" had tied him before, and looked at Yuanhuaiyu with surprised eyes.
After listening to Dr. Agasa's explanation, he realized that Teacher Yuan had already announced to the Mamiya family outside that he had found the treasure.
So he figured out a whole line of logic——
Teacher Yuan had already figured out who the gangster was and cracked the secret of chess, but in order to ensure that he caught the gangster who was familiar with the structure of the entire secret passage, he made such a design.
"As expected of Mr. Yuan, if we call the police directly, we might let this guy run away..."
He sighed, but saw Yuan Huaiyu shaking his head and saying:
"No, I actually didn't think about it that much, because even if she escaped through the secret passage, it would only be a matter of time before the police caught her. After all, her features are too obvious, and she can't escape even if she wants to."
"Then why..." Conan choked.
Yuan Huaiyu showed a "big revenge must be paid" smile that the three of them could not understand at all: "Actually, I just want to give this guy a slap in the face."
What he didn't say was that even if he only used five points of force, the impact caused by that blow would be enough to turn this cruel and selfish fake from pretending to be stupid to being really stupid...
"Okay, let's take her and go back to the castle." Yuanhuaiyu picked up the unconscious "Mamiya Masuyo" and turned back to Dr. Agasa, Conan and Haiyuan.
…
"Mr. Yuan, are you saying that this person is not the concubine at all, and that the real concubine has been killed by her?"
Mamiya Mitsuru looked at the extremely familiar person who was motionless in front of him, and he almost wrote the words "You're kidding me" on his face.
"I know this matter may be too shocking for you, and you may not be able to accept it for a while."
Yuanhuaiyu shrugged his shoulders and looked at Mamiya Mitsuru and Mamiya Takato, who were trembling all over and feeling agitated.
"But the fact is that this person was just a maid pretending to be the dowager. And in order not to expose her identity, she locked the real dowager in a secret passage and killed her. She also caused the fire.
The culprit who killed more than a dozen people, including Mrs. Mamiya."
The noble Mamiya looked directly at Yuanhuaiyu: "...I have always felt that there was something fishy about the fire four years ago, but I didn't expect that the person who caused the fire has been living with us..."
Mamiya Mitsuru finally recovered from the shock, and suddenly remembered another thing: "The servant who starved to death in the forest two years ago..."
Yuan Huaiyu nodded: "Of course it was this guy's work too. The servant misinterpreted the puzzle and thought the treasure was hidden in the abandoned tower. That's when disaster struck and he was killed by the fake dowager."
"..." Mamiya Mitsuru inserted his hands into the hair on both sides of his head, feeling scared for a while.
They have been living with a murderous devil!
But afraid of returning home, Mamiya Mitsuru still did not forget the treasure in the castle that he wanted most.
"I've already called the police. The police will come at dawn and take this fake away. Hum... She has killed so many people, so she must not be let go."
He kicked the fake lady who was lying on the ground in disgust, pointed at Conan standing aside with some enthusiasm, and looked at Yuanhuaiyu.
"Mr. Yuan, the kid with you has been found. Is the mystery of the treasure..."
Yuan Huaiyu shook his head helplessly and said: "Okay, okay... Since everything is like this, there is no need to wait until tomorrow morning. Come with me."
Full of excitement and anticipation, Mamiya ordered his servants to keep "Mamiya Masuyo" under guard, and then hurriedly followed the footsteps of Yuan Huaiyu and his group and arrived at the main entrance of the castle.
This is the hall where three huge portraits hang. Yuanhuaiyu looked at Conan: "Edogawa-san, please explain it to Mr. Mamiya."
"Okay." Naturally, Conan would not shirk this opportunity to show off himself and began to speak.
"The key to the puzzle left by the great master is the layout of the chess pieces in the courtyard."
Mamiya Mitsuru nodded slightly, this was something they already knew well before.
"The positions of chess are usually black at the top and white at the bottom. The positions are expressed by the English letters A to H and the numbers 1 to 8. Judging from the arrangement of the white chess pieces on the chessboard, combined with the alphanumeric order represented by the square positions
…”
"It can be concluded that [EGG·HEAD], also commonly known as...the intellectual who loves to reason, refers to the portrait of the great master."
Mamiya Mitsuru immediately stepped forward and came to the front of the portrait.
"Then rotate the portrait in the direction represented by the black chess piece, and you will be able to see the entrance to the secret passage at the rear."
Mamiya Mitsuru couldn't wait to move the portrait away as Conan said, and sure enough he saw a vertical passage upwards.
Using his hands and feet, he quickly climbed up and saw a closed door.
Mamiya Mitsuru suddenly opened the door, and a gust of cool wind blew in his face. On the other side of the door was the outside of the castle.
He stuck his head out and saw a starry sky in front of him.
"What...what's going on?"
Yuan Huaiyu's voice came from behind him: "This is the treasure that the great master wants to leave to future generations - it is written on the door on your right."
Mamiya Mitsuru looked intently and saw a line of small words carved on the door:
[For me, the scenery of this castle is the most difficult treasure to part with.]
There is another line of words following it.
【How is it? Is it unexpected? 】
Looking at Mamiya Mitsuru who was stunned on the spot, Yuan Huaiyu smiled like a fox.
The following line of words was added by him at his suggestion to the great master, and it was also a bit of his personal bad taste.
"Haha... That's it..." Mamiya Mitsuru lowered his head, his back looking a little lonely and sad.
He was looking forward to the legendary treasure, but when the mystery was revealed, the higher his expectations, the more uncomfortable he felt.
The noble Mamiya walked up and patted Mamiya Mitsuru on the shoulder: "Look on the bright side, Uncle Man, at least we can return the truth to our mother and the others..."
Mamiya Mitsuru remained silent, as if he silently accepted Mamiya Takato's statement in his heart.
…
After dawn, the police came and took away the murderer of the murders in the Blue Castle over the years.
"Masushiro Mamiya" has woken up, but what surprised everyone, including the police, is that the murderer pretending to be an old lady seems to have gone crazy.
Yuan Huaiyu looked at the fake lady who only kept repeating "My treasure, my treasure..." after hearing the truth about the treasure, and let out a long sigh.
She had been planning for the treasure for more than twenty years, but in the end she learned that the treasure was just the beauty of the castle within her reach.