Repair the world of Conan

"What? Was I really poisoned?"Xu Shengyi couldn't react at all and looked at Ye Ling blankly.

Kogoro was also confused at this time and asked Ye Ling:"What's going on?"

Hui Yuan Ai on the side folded his hands and explained expressionlessly:"Potassium cyanide can cause an oxidation-reduction reaction with rusty copper coins. After the copper oxide is dissolved, the rust will disappear, and the location where the reaction occurs will become particularly new.."

Everyone looked at the table and saw that the rusty ten-yuan copper coin was indeed unnaturally golden in some places.

Xiaolan looked at Xiaoai in shock and asked:"How do you know this?……"

Xiao Ai raised his head and smiled childishly, and replied in a childish tone:"These are all what Dr. Ali told me." Hearing this, the doctor beside him was startled at first, and then grabbed his bald head and laughed,"Because Xiao Ai loves me so much." Study, so I taught her a lot of chemistry knowledge."

Everyone was speechless, and Kogoro couldn't help but complain:"Even if she loves studying, she is still a primary school student after all. Why are you teaching her such terrible knowledge?"

When Uncle Maori said this, Xiaolan next to him was not convinced. He put his hands on his hips and scolded:"Dad! You are talking about others. Don't you always ask Conan to cooperate in demonstrating some dangerous criminal techniques?"

"Um? Is there such a thing?"Kogoro looked confused, he had no impression at all.

Conan secretly yelled, of course the uncle didn't know, because the uncle slept soundly when the technique was demonstrated. Thinking of this, he hurriedly changed the topic and faced it like a child Ye Ling shouted:"Wow! Brother Ye Ling, you are so awesome! There are so many poisons in the world, how do you know which one the murderer will use?"

"Yes, Ye Ling, how did you know?"The White Bird Police Department asked in confusion. If they had not known in advance that the poison was potassium cyanide, they would certainly not have proposed using rusty copper coins to test this method, right?

Ye Ling's answer left everyone speechless,"Of course it is a guess."After a pause, he added:"If you want to control the poison within an imperceptible amount and make it quick and effective, only potassium cyanide meets the conditions."

……

When the poisoning was confirmed, boss Xu Shengyi broke into a cold sweat and could no longer remain calm. If I had smoked that cigar, I would probably have turned into a corpse by now, right? He had heard the name of potassium cyanide for a long time, but he never dreamed that one day it would be used on him.……

"Who was it... and when was it poisoned?"He hurriedly asked Ye Ling

"You also smoked a cigar in the car, but you were not poisoned. It can be seen that the murderer waited for you to meet us before injecting the poison."Ye Ling scanned the crowd and said calmly:"Therefore, the murderer is among us."

As soon as these words came out, everyone looked at the people around them in panic.

The murderer is among them? Who is it?

For a moment, everyone was on guard, as if they had become enemies in an instant.

"As for the way the murderer poisoned him."Ye Ling added:"It is too dangerous to poison directly, and it is not easy to poison in a cigar box, so the most likely way is to apply poison on items that Mr. Xu will touch with his hands.

Takagi suddenly realized it and exclaimed:"That's it!" First apply poison on the items that Boss Xu will touch. When Boss Xu gets the poison on his hands, he will die from the poison if he smokes or eats again."

"Could it be that the poison was on the tables and chairs?"Shiratori Police Department asked, because the door here is automatic and does not need to be touched by hand, so it is impossible to poison the door.

"It can't be on the tables and chairs, because everyone's seats are random. After a pause, Ye Ling added:"I speculate that the most likely place for the prisoner to poison is on the control button of the cross-sea cable car."

Xiao Goro suddenly realized,"I remembered! After we entered the cable car, it was indeed Boss Asahi who pressed the start button!"

The sea cable car only has two back and forth buttons, so it is very convenient to poison.

"However, how to ensure that the person pressing the start button is Mr. Xu? If someone who arrived early entered the hotel first, wouldn't the poisoned target become someone else?"Dr. Ali was deeply puzzled.

"That's exactly what I wanted to ask."Ye Ling glanced at everyone and questioned:"Why did you arrive at the shore early but not enter the hotel in advance? According to what Mr. Xu said when he got off the car, he should have told you not to wait for him. Moreover, even though everyone knows how to control the cable car, there are only two buttons for going back and forth, but none of you went in first. You insisted on waiting for Mr. Xu to press the button. Too bad. Strange"

"I don't know. When I came, I saw Mr. Shishido and Mr. Ford waiting on the shore, so I waited with them."Female model Nana said.

Everyone looked at Shishido and Ford. Shishido hurriedly waved his hands and explained:"Don't look at me like that. I was the second one to arrive. I originally wanted to go in early, but Ford said that he would wait until everyone Come here and go in together."

At this moment, everyone's eyes were focused on Ford. Could it be that the prisoner was Peter Ford... Yes, he must have arrived in advance and put poison on the button, and then stopped everyone from entering the hotel until Mr. Xu arrived.

Ford suddenly panicked, and Xu Shengyi became furious and cursed loudly:"Ford! You bastard! I lent you so much money when you were in trouble, and you actually want to kill me!"

"No! No, not me! Ford explained at a loss:"I just think it would be rude for the host to go in early before the guests have arrived, so I suggest that everyone wait for you." Moreover, applying poison to the button is just Detective Ye Ling’s guess, it is not a fact at all!"

"This kind of thing can be found out just by checking it."White Bird Police Department said.

However, Ye Ling shook his head,"No, the inspection can't come out because Mr. Ford was the last one to get out of the cable car."

Hearing this, the White Bird Police Department was shocked and immediately understood.

Why did Ford leave the cable car later than everyone else? It must be to eliminate the poison on the button……

"If my guess is correct, he took advantage of everyone to leave the cable car and quickly cleaned and wiped the button with bleach, such as sodium hypochlorite. Even if the police investigated, they would not be able to find potassium cyanide."Ye Ling looked at Ford and said:"And the tools he used to clean up have probably been thrown into the vast ocean by chance."

"this……"Everyone was stunned. Wasn't this guy's plan too thorough? If Ye Ling hadn't been overly cautious and guessed in advance that the prisoner might poison him, Xu Shengyi would have been poisoned directly, and the police would never be able to find the source of the poison.

Having said that, even if Xu Shengyi was not poisoned to death at this moment, the fact that Ford poisoned the button could not be confirmed.

Ford secretly breathed a sigh of relief. Fortunately, he had eliminated the traces of poison in advance, otherwise he would have been in trouble.

However, when he raised his head, he found a slight curve in the corner of Ye Ling's mouth, which immediately gave him an ominous premonition.