In the crowd's inexplicable eyes, the old woman took back her left and right eyes and asked the gardener uncle, "tanhata, hasn't my daughter come yet? Didn't she say she would come back today to celebrate my birthday?"

"Well, big lady... Actually..."

Uncle gardener seemed to want to explain something, but he was interrupted by the impatient old woman and said, "forget it, don't wait for her here. I'll go back to my room first. Tianhata, when she comes, call her to my room right away. It's really exciting..."

After saying this, the old woman directly put down the people and slowly left the hall in a wheelchair.

Looking at the old woman who left in a wheelchair, Bai yanzhenyu asked unexpectedly, "Mr. tianhata, is today Mrs. Da's birthday?"

"Today is not Mrs. big's birthday."

The gardener shook his head and explained, "since my wife died in the fire, my wife has always been like this. She regards every day as the day before the fire. I think she may have been hit too hard."

After the old woman left, Conan, who was bored by winter camping, immediately became interested in the mystery she mentioned.

Thinking of the stone carvings of chess pieces and the lawn chessboard he had seen in the front yard, Conan thought it might be an important clue. He quickly asked, "uncle, is there any room where you can see those chess in the yard?"

"Chess in the yard..."

After thinking about it, the gardener replied, "if you want to see chess, you can go to the room on the second floor and open the window."

"Uncle, we want to see it. Can you take us?" Conan asked.

"And us. We're a young detective team. Maybe we'll solve the mystery."

The Bumei trio, who likes to join the fun, naturally said they would go together, and also pulled up the reluctant ash Hara sorrow.

"OK, I'll take you, but you should be careful not to damage the contents."

The gardener's uncle didn't refuse. Maybe he took them to the room on the second floor, and then took Bai Yan Zhenyu and Dr. a Li to the living room, bringing tea and snacks to entertain them.

……

At the same time, Conan and others in the room on the second floor also opened the window and looked down at the chess in the front yard.

Conan took out his notepad and drew the arrangement of chess pieces on blank paper to analyze the information that might be hidden in it.

Bu Mei lay down beside Conan, looked at the chess below and exclaimed, "great, the chess pieces are neatly arranged!"

"Where is it? I can't see it!" Yuantai, standing behind them, hurriedly yearned for the position of the window.

Bu Mei looked at Yuantai discontentedly and complained, "please don't push me, Yuantai, I haven't finished reading..."

Guangyan, who has a better brain than Yuantai, didn't compete for position with others. When he found that there was an unlocked room next door, he ran to check the situation.

Soon, the window next door was also opened. Guangyan's head stretched out from inside and shouted proudly: "Mrs. yuan, you can see this window too. Come here."

"Really? I'll come right away." Yuantai immediately gave up the action of competing for position with Conan and ran over happily.

Conan ignored the others. After recording the contents of the chess game, he sat on the floor and chewed his pen.

Seeing this, ash Hara walked slowly over and asked with great interest, "this should be your favorite puzzle solving activity. Then, are you sure to crack the information?"

Before Conan could speak, he heard Bu Mei shouting eagerly, "please, what are you two doing?! will you fall?!"

As soon as Conan's face changed, he quickly stood up and looked out of the window. He found that Yuantai's body fell out of the window. At this time, he was holding the next window in panic, while Guangyan held Yuantai's arm tightly. However, from his hard expression, it was obvious that he couldn't last long.

"What a fool!"

Seeing that they were in danger, Conan dared not delay at all. He hurried from the corridor to the next room, worked hard with Guangyan, and pulled the overweight Yuantai in from outside the window.

"Ah, saved, I almost fell down just now..." Mrs. yuan touched the cold sweat on her forehead and looked scared.

"Really... Be careful next time. I won't save you so timely every time."

Conan was helpless to these rash kids. When he gasped on the wall with one hand, he suddenly remembered a strange thing.

[the window of this room is next to the wall, and the window of that room just now is also next to the wall. There should be only one layer of wall in the middle, but when I just ran from the corridor, there was a large distance between the two rooms, that is to say, there may be a hidden secret room between the walls!]

Thinking of this, Conan got excited, tapped gently on the wall with his fingers, and soon found a relatively empty place on the wall.

After determining the location of the secret room, Conan began to observe the layout of the weekend and look for the mechanism that can enter the secret room.

With his excellent observation ability, Conan found that a clock with no moving pointer hung above the chamber of secrets. Combined with the relevant knowledge of the chamber of secrets learned in Hawaii, he inferred that it was the mechanism to open the wall chamber of secrets.

"For this type of mechanism, you should turn the clock to a certain time point to open..."

Conan brought a chair and padded several thick books on it. He stood on it carefully and fiddled with the hands on the clock a little.

When the pointer moved to the reserved position, the wall suddenly cracked a gap and rotated 180 degrees like a revolving door, so that Conan fell into the wall chamber.

"Hehe, it seems that this castle is really not simple..."

Conan got up from the ground and showed such an expression. Then he turned on the flashlight function of his watch, walked along the steps of the secret room and went to check the situation inside.

……

When Conan fell into the secret room, the movement of chairs and books when they rolled over also made Yuantai and Guangyan's attention withdraw from the chess below.

Mrs. yuan scratched her head and said in surprise, "eh? Strange, where's Conan? He was just here?"

"Why are the chairs and books here? Did Conan put them here?"

Guangyan looked at the rollover chairs and books with some doubts. He felt that things were not so simple, so he took Mrs. yuan to the next room to find Conan.

However, in the next room, there were only Bu Mei and ash Hara AI. Conan didn't return here after saving Yuantai, that is... Conan, disappeared!