The new clue given by Heye is that although she didn't see the killer, she found some bb bullets as toy pistol bullets on the grass in front of the warehouse.

When they came to Takeda's house in the evening, they also passed on the lawn outside the warehouse. At that time, there was no BB bomb on the lawn, that is to say, the BB bomb fell there after that.

Before that, no one had played with toy pistols outside, so if there was no accident, these bb bullets fell there when the killer was carrying out some activities.

Thinking of this, Baiyan Zhenyu looked at each other and seemed to understand something. Then they ran outside the warehouse and the second floor of the warehouse to look for it carefully.

Before long, the three found what they were looking for - a few holes left by pushpins and a few short fishing lines tied into circles at both ends.

"As we thought..."

Baiyan Zhenyu took the evidence in his hand, looked at Conan and asked, "what are you going to do next? Who will expose the murderer?"

Knowing his situation, Conan shook his head and said, "it's not appropriate for me to go. Let the service department go."

With a pick on his brow, Hattori said proudly, "we broke this case together. I'm sorry to take the credit. I'd better give it to the confused uncle of your family."

"OK, let my uncle show off again."

Baiyan Zhenyu also had no opinion. He called Maori xiaowulang to the warehouse. Conan immediately smiled and raised his watch and anesthetic gun.

Maori Kogoro, danger!

A moment later, Maori Kogoro evolved into a "sleeping Kogoro." Baiyan Zhenyu also put down Takeda Xinyi's body, so he asked the service department Pingci to call all the Takeda family to the warehouse to expose the real murderers behind the two homicides and the attack.

……

When the people of the Takeda family entered the second floor of the warehouse, Conan disguised the voice of Maori Kogoro with a sound transformer and said, "since everyone has come, let me expose the truth of these events of the Takeda family."

"Wait a minute, Mr. Maori."

Takeda longer couldn't help interrupting Maori xiaowulang and asked, "when we found the eldest brother's body, the door at the entrance was locked from the inside, and the only small ventilation window didn't allow adults to pass through. Although I don't believe in ghosts and gods, if you say it's a man-made event, can you first explain how the murderer escaped from here?"

"Hum, if there's a way to escape from the warehouse, I'd like to ask him."

"Maori xiaowulang" snorted, but the content of his answer made people more confused. I don't know why he said such contradictory words.

Without asking Takeda longer, "Maori xiaowulang" continued to explain: "the reason why I say this is because the murderer didn't have to escape from here at all, because the murderer wasn't in this room when Mr. Shinichi was killed."

"Eh? How is that possible?"

The words of "Maori Kogoro" shocked the people of the Takeda family. With an incredible look, Takeda longer asked, "but if the murderer is not here, how did he kill his brother and hang him here? And there are so many fishing lines wrapped around the body..."

"The technique used by the murderer is very simple. Just use the fishing line to control the puppet. The murderer completed the secret room murder by using three things: fishing line, rope and pushpin."

It seemed that they were worried that they would not understand. After a short pause, "Maori Kogoro" explained in more detail.

"First of all, make a god circle that will tighten when you pull the rope and tie it vertically to the beam of the house;"

"Then, with a short fishing line tied into small circles at both ends, pull out the four corners of the circle and fix it around the ventilation window with pushpins;"

"Then, at the connection point of the divine circle, use a long fishing line to pass through, wrap the fishing line around the beam in the center of the room, and then pull the fishing line out from the ventilation window. The trap is finished."

"You see, it's like what Zhenyu kimono department is doing now."

While "Maori Kogoro" explained, Bai yanzhenyu and Pingci of the kimono department also arranged the scene according to the corresponding methods, and flashlights were shown to the people of the Takeda family.

After they saw the details of the trap, "Maori xiaowulang" continued to explain: "at this time, as long as Mr. Fuzi came to the warehouse and tried to make him look out from the ventilation window, pull the fishing line from the outside and shrink the God circle beside the window, the God circle would be put around Mr. Xinyi's neck, so he could easily kill Mr. Xinyi."

After listening to the murder method deduced by "Maori xiaowulang", Takeda longer still didn't believe it. He questioned, "but why did brother meet others in the warehouse and lock the door from the inside?"

"Yes," said Miss yangu, also puzzled, with a weak tone, "even if master Xinyi makes an appointment to meet others here, anyone will feel wrong if others let him look out of the ventilation window?"

"Both questions are simple."

Maori Kogoro calmly explained: "first, lock the door from the inside because they are talking about topics that can not be known by others; second, Mr. Shinichi looks out because he hears strange sounds."

"Poop poop..."

As soon as the voice of "Maori xiaowulang" fell, there was a series of slight collisions outside the ventilation window. The brave Takeda longer walked over and found that the clothing department did not know the right time and ran downstairs, holding a toy gun in his hand and shooting at the glass of the ventilation window.

"This is..." Takeda's eyes showed a look of understanding, probably to understand the meaning of "Maori xiaowulang".

"Yes, the killer shot at the ventilation window glass with a toy gun from outside the house to make this strange sound. When Mr. Xinyi stretched out his head to check, he started this trap arranged in advance and killed Mr. Xinyi."

Speaking of this, the voice of "Maori xiaowulang" suddenly became a little low and speculated: "as for the purpose of the murderer killing Mr. Xinyi, I think it should be to avenge Miss Meisha who hanged herself here three years ago."

"What?"

"Is the murderer avenging Meisha?"

After hearing the motive of the crime speculated by "Maori xiaowulang", the people of the Takeda family changed greatly, and their eyes full of shock and doubt fell on Maori xiaowulang.