In the end, Conan still did not give Mouri Kogoro a chance.

Although it is very reasonable to hand over the reasoning to the "Sleeping Kogoro" and it can also give him the favor of Fukui Yusui, but because of this, Conan considers Koran, he will not give Kogoro Mori the opportunity to do something random outside.

Therefore, the burden of the tool man still falls on Chen Xing.

"Although Uncle Maori's speculation is not without reason, the truth is not the case."

When the attention of Officer Meguri and others was attracted by Kogoro Mouri, a proud and light voice appeared.

Chen Xing couldn't help but look at the corner of the bar. A primary school student who looked like an incandescent lamp in a black shadow in his eyes, but had no sense of existence in the eyes of others turned his back to everyone openly.

"Does the truth you are telling mean that you have seen through this case?" Takagi Shigeru said in surprise.

"Really, Brother Tufang?" Officer Memu's eyes lit up.

Next to him, Kogoro Mori subconsciously touched his neck. The familiar slight stinging sensation did not come, and he had no sleepiness after the stinging pain.

He suddenly felt that it seemed that he was destined to be out of sleep tonight.

"Yes, first of all, it's about how to make the weapon disappear." The voice of 'Chenxiong' was as steady as ever, "Officer Takagi, please buy some things back."

He said the water cup, the negative box and the foaming hot spring ingot.

When Chen Xing was still thinking about returning the car to withdraw money, Takagi Shio ran out with great action.

"First fill the negative box with one-third of the amount of water, then put the foamed hot spring ingot about the size of sugar into the negative box. Then cover the lid of the negative box and place it upside down so that the lid is underneath."

Conan said it was unhappy, and Chen Xing was very capable of doing things, so he did it without any fault.

Although Officer Memu and others didn't understand it very well, they all looked at it quietly. After almost three minutes, Chen Xing's eyes moved slightly and retreated to the side. Then the negative box collapsed with a bang and hit the ceiling.

The sudden voice shocked everyone who was a little distracted.

"This method is called a negative box rocket," Conan explained: "Once the foaming hot spring ingot comes into contact with water, carbonic acid gas will be produced. The gas filled with the negative box will push the box away from the lid and fly high like a rocket."

Fukui Yu sniffed her nose and said in surprise: "The fragrance of grapefruit?"

"Yes, I think the murderer used a foaming hot spring ingot with the aroma of grapefruit."

"So, I've heard the sound of bang two or three times before..."

"It was the murderer who had experimented here a few times. I wanted to try to see if the murder weapon can be successfully inserted into the ceiling of this store after it was fired on the negative box."

As soon as the words of 'Chen Xing' finished, Officer Memu couldn't help but say, "Put the murder weapon on the negative box? The murder weapon is an item as big as an ice chisel."

Takagi nodded, "Even if the thrust is strong, it carries such a heavy thing..."

"Because the needle of the hard dart can be removed, weighing about 18 grams, it is not difficult to carry it to fly. Moreover, the murderer also installed clay at the bottom of the box to fix the needle of the dart.

In order to hide this device, I deliberately used posters rolled into a cylindrical shape to cover it up. In this way, even if there is some deviation during the launch, it can still reach the ceiling accurately."

Speaking of this, Conan paused, and Chen Xing had already guessed who the murderer was.

"I should be right, I bought the target and gave it to the victim Mr. Xiao Muwenping, who used the dart as a gift!"

Xiao Muwenping, who was named by him, became a little nervous when he saw Chen Xing demonstrate his technique just now, and at this moment he was pointed out with a word, and his expression was even more difficult to maintain calmness.

Conan said: "If it were you, there would be a way to apply poison on the dart needle in advance and then put it in the box. And the mechanism for hiding the murder weapon with the negative box rocket is the only way to set up the device if you are sitting next to the poster.

I think Mr. Xiao Mu should have lost intentionally when the victim was drunk and went to play billiards or shoot darts with two other people, and returned to his seat to be alone with the victim. Then when he was covering his coat, he stabbed the victim in the neck with a poison-coated dart needle, then removed the dart needle and replaced it with another dart needle that had been prepared in advance.

The poison dart needle is fixed to the bottom of the negative box with clay, and then clamped it under your crotch to hide it. Next, just pull away the attention of the other two people and put the negative box rocket on the table and it will be done."

Conan smiled faintly, "I think about it, for example, the excuse of 'see if any guest over there is like a celebrity'. Of course, it's time to order a whole bottle of champagne."

Hearing this, Kishiura Miyasu suddenly said, "I remembered that the scene was exactly the same as what this guy said."

"The last step is to open the champagne cork almost synchronized with the rocket launch sound, and let the sprayed champagne spray on the upright poster, so that the foaming hot spring ingots left on the table can be wiped clean."

Conan said calmly: "As for the evidence, just where the poster is wet, there should be a scent of grapefruit."

Upon hearing this, Kogoro Mori picked up the poster and sucked it deeply, "It's true, but this poster should be something Miss Kishiura bought, right?"

"This is because the victim reminded her many times in the company. If she did not buy posters as expected, Mr. Xiao Mu should have planned to use other posters to make the same."

Conan said: "There are those darts. He guessed that he would give the target to the victim, and the other party would ask to play. As long as he knew that a large number of photos would be taken at the birthday party and placed on the blog, it would be no surprise that the victim would ask Miss Kishiura to buy negatives."

After everyone digested it a little, he said, "All this was told by the weapon quietly inserted on the ceiling. If Mr. Xiao Mu had not bought the dart, he would not be able to prepare the same kind of dart needle."

Officer Megumi asked in confusion: "But if only the needle of a dart is stabbed on it, then carrying it to the ceiling is a negative box with clay on it, which should fall off."

Conan explained: "Because the victim's beloved poster was wet with champagne at that time, everyone was panicked. Even if it fell down, it would only be considered as when wiping the table. I accidentally removed the negative box and would not care about it."

Chen Xing also remembered that the film box that he had accidentally seen fell to the ground before. At that time, he thought it was accidentally touched by wiping the table.

Conan said: "By the way, the piece of clay that fell off the bottom box and was stepped on by Uncle Maori to the sole of the shoe. The reason why the upside down letters were printed on it is because most of the bottom box are marked with such words."

"Since that's the case, what about the fragments of foam hot spring ingots that should be left on the table?" Officer Meguri asked.

"It should be a chance to throw it into the beer I've drunk." Conan said: "If it's beer, it's not surprising that it will appear foamy, it will slowly dissolve and disappear."
Chapter completed!