The pudgy doctor sighed, walked to the deceased again, squatted down, and the hem of his suit jacket touched the ground, making a slight sound of metal collision.

Zhu Fu Gaoming looked at the doctor's back and said, "Can the needle hole be seen with the naked eye?"

The doctor untied the cufflinks of the deceased, looked at the two hands of the deceased, turned the cuffs to the upper arm, checked the elbow socket, glanced at Zhu Fu Gaoming standing behind him, and found that the other person was watching him, casually Said: "Yes, he died not long ago, and the injection site should be red and swollen."

The train conductor stood behind the doctor, stretched his neck, and his eyes widened.

"It's not found. This should rule out the suspicion of murder. He must have suffered a sudden illness." The doctor turned the deceased's arm over and over and examined it for a long time.

The train conductor breathed a sigh of relief and said to the doctor: "Ah, thank you."

Zhu Fu Gaoming held his chin, thinking whether his inference was wrong. When the doctor checked, he also looked at it and found that there was indeed no trace of pinholes.

Mingyue looked at the pensive Zhufu Gaoming beside her, thought for a moment and said, "The great saphenous vein, the small saphenous vein and the dorsal pedis vein can also be injected. Right, Mr. Doctor?"

The short and fat doctor looked at Mingyue, biting his back teeth, but still had a professional smile on his face, but could not hide a hint of coldness in his voice, "You are not old, but you know a lot."

Mingyue stood obediently next to Zhu Fu Gaoming and said with a smile: "I have an older brother who is a detective. My brother told me all this."

As Toru Amuro was driving, he suddenly felt his ears itching. He thought no one was talking about me, but it was more important to rush to Takasaki Station now. Then he stepped on the accelerator to the bottom, and the car flew out like an arrow off the string.

"Please doctor, please check your ankle. It should be convenient for injection." After Zhufu Gaoming said to the doctor, he glanced at Mingyue and mentally recalled all the detectives he knew. Who has such a sister? Do I really know her brother?

The short and fat doctor turned his back to Zhu Fu Gaoming, squatted down and rolled up one of the deceased's trousers, and looked at it casually, "There are still no traces."

"Mr. Doctor, I still have one foot!"

The doctor rolled up the other trouser leg as if resigned to his fate.

The train conductor stretched his head and stared at the ankle of the deceased's other foot. A red swelling appeared in front of his eyes, and he muttered: "There really is a needle eye."

The train conductor standing outside the cabin frowned, "Really? Oh my god, it's really murder. I'm going to inform the police!"

"I just informed you." Zhufu Gaoming put away his phone and looked at the train conductor, "How many people are on this train?"

"There are more than a thousand people, police officer. You don't mean that the murderer is still on the train, do you?"

Zhu Fu Gaoming nodded, "There is a possibility, maybe the murderer did not get out of the car, and the murderer is among these thousand people."

The train conductor, whose brows were knitted into the Chinese character "Chuan", was shocked and said: "Oh! My God!"

Zhu Fu Gaoming stretched out his hand and shook hands with the doctor, "Thank you very much for your assistance."

"No, this is what I should do." The pudgy doctor had a professional smile on his face, "Can I go back to my seat and rest?"

Zhu Fu Gaoming made way, and the pudgy doctor left in his suit jacket.

"Aren't you going back to your seat?" Zhu Fu Gaoming glanced at Mingyue beside him.

Mingyue raised her head and looked into her upturned phoenix eyes, "I think it's more interesting to follow Mr. Kong Ming, and as one of the suspects, I have to follow the police officer and find a way to prove my innocence."

Zhu Fu Gaoming's lips curled up slightly, "You are quite honest."

"Ah?! Is she a suspect at such a young age?" The train conductor looked at Ming Yue in disbelief, "She doesn't seem to know how to kill."

"The person who can complete this murder must have medical knowledge." Zhu Fu Gaoming looked at the luggage placed on the table.

The train conductor was a little nervous, "Well, doesn't that mean the doctor is also suspected?"

Zhufu Gaoming nodded and glanced at the report he had just received. All the people who got off at Karuizawa were found. No extra tickets or strange coats were found. The passengers who got off the bus were a group of elderly people from a tour group. They had alibis for each other, and none of them were studying medicine.

Mingyue pointed to the dead man over there and asked, "Can I go over and have a look?"

"Yeah." Zhu Fu Gaoming nodded.

Mingyue approached the deceased and smelled the smell in the deceased's mouth. It smelled like coffee, but could not smell anything else. She looked at the redness and swelling on the ankle and pressed it with her fingers a few times. It seemed that the injected liquid should be more than 25cc.

Zhu Fu Gaoming stood beside Mingyue, "Is there any problem?"

"The deceased drank coffee before he died." Mingyue tilted her head and thought for a moment before continuing, "If someone suddenly grabbed my ankle and injected liquid into my ankle, I might scream. Even if my mouth is blocked, It will also be a struggle.”

Zhu Fu Gaoming squatted down and carefully looked at the pinhole. The pinhole was very small, with no trace of tearing and even no bleeding around it. I got close to the deceased's mouth and nose and took a sniff. I couldn't smell the smell of ether or other intoxicating drugs. Although those things are easy to evaporate, some smell will remain to some extent.

"He was knocked unconscious and injected with drugs."

Mingyue nodded thoughtfully, "Well, that's what it looks like. In addition, although potassium chloride is a substance contained in the human body, the concentration should be able to be tested in an autopsy, but it is not a drug that does not kill people but leaves no traces. "

"Your brother told you this too?" Zhu Fu Gaoming became more and more interested in the brother in Mingyue's mouth.

However, Mingyue didn't notice the unusual tone of Zhu Fu Gaoming's tone, and nodded, "Yes, these are all things my brother taught me." But in her mind, she was thinking about the killing techniques and possible loopholes in the process.

The train speeding on the railway track was like an isolated island. The murderer could not get out, and the police officers supporting him from outside could not get in.

"Monnaisang, have you been sitting with that doctor before?" Zhu Fu Gaoming looked at Mingyue.

Mingyue shook her head, "No, he left for a while before I sat in that seat." Mingyue told Zhu Fu Gaoming exactly what happened after leaving the dining car.

"Did you see what was in his medical kit?"

Mingyue thought for a moment, "He blocked it with his body."

"However, you can judge the other person's occupation just by the way he holds the scissors, which is quite impressive." Zhu Fu Gaoming affirmed, "So besides him, are there other medical staff in the car?"

The train conductor said with some tangle: "Actually, we have encountered some passengers suffering from sudden illness before. Usually when we start looking for medical staff, they are very active in cooperating with us to treat passengers. Today's doctor..." The train conductor There was a tangled look on his face, but he still said slowly, "It's a bit strange."

Mingyue looked at the corner of her clothes. The coffee had been cleaned very clean, but through some means, the ingredients remaining in the fibers of the clothes could still be found. After all, sometimes cleanliness is just what it looks like to the naked eye. Maybe it's in the soft and thin threads. Hidden secrets.

"Mr. Kong Ming, why don't we search in other carriages? Maybe some items that should belong to the deceased will appear." Mingyue looked at Zhu Fu Gaoming, thought for a while and then continued, "Maybe there are others. Doctor, where is he hiding in this train?"

Zhu Fu Gaoming glanced at Mingyue and said, "Indeed, except for the ticket, there is nothing that can prove the identity of the deceased. Those things should be placed in the wallet of the coat."

"Well, maybe the murderer is eager to get rid of them~"

Zhufu Gaoming said to the train conductor: "Don't let irrelevant passengers in here. Criminal police will come to investigate at Gaoqi Station."

The train conductor patted his chest and vowed: "There is still about an hour until we arrive at the station. I will definitely take good care of this place."

"please."

The train conductor looked at the deceased, slowly exhaled, and frowned.

Mingyue was led by Zhu Fu Gaoming to patrol the train, mainly checking whether there was anything similar to a medical kit on the luggage rack and whether there were items discarded by the murderer in the trash can.

After some inspection, although not much was gained, it seemed to be one step closer to the truth.

In the trash can, Zhu Fu Gaoming found a wallet. There was not a single steel coin in the wallet, but there were several business cards. There was a photo on the business card of the deceased.

The name of the deceased was Yao Ichiro, and the occupation column on the business card was private detective. The ticket belonging to the deceased also appeared in the wallet. The ticket was from Toyama Station to Omiya Station.

"I know this person." Zhu Fu Gaoming looked at the business card in his hand and said solemnly, "He is a detective famous for breaking scandals. Several companies have closed down because of his revelations."

"Then he must have many enemies."

Zhu Fu Gaoming thought for a moment, "I don't think this was done by those enemies. It is more likely that he threatened or blackmailed someone and failed, and was killed by the other party instead."

Mingyue looked at Zhu Fu Gaoming and blinked in confusion.

Zhu Fu Gaoming's lips curled up slightly, "The camera had no negatives, and the deceased's coat was missing, which means that the private detective hid the negatives in his coat. However, the murderer could not take out the negatives for some reason, so he could only hide the negatives in his coat. Take it away.”

"Wow, that's why Mr. Kong Ming said that there was a secret hidden in the coat." Mingyue looked at Zhu Fu Gaoming excitedly.

Zhu Fu Gaoming said with a smile: "Actually, at that time, I just thought that coat would not be particularly expensive."

Mingyue tilted her head and looked at the wallet in Zhu Fu Gaoming's hand. She found that the zipper of the wallet was broken and the wallet was somewhat deformed. "The wallet was broken and I didn't even replace it with a new one."

Zhu Fu Gaoming paid attention to the wallet in his hand, closed it, and found that the wallet seemed to be deformed by something. He put it in front of his nose and smelled it. It had the unique smell of copper coins. "There should be a lot of copper plates in the wallet. The murderer should have taken all the money."

"Well, private detectives generally like to use those kind of coin-operated phones to investigate things because they are anonymous." Mingyue looked at the trash can and tried to find other things, but unfortunately there was none. "If I were the murderer, I would definitely put it in Spend all that money, after all, it has the fingerprints of the deceased on it."

Zhufu Gaoming was startled and looked at Mingyue, "Go to the dining car!"

Arriving at the dining car, Zhu Fu Gaoming asked the steward of the dining car if anyone had come to buy anything just now and spent a lot of copper coins and change.

The flight attendant shook his head, "No one comes to buy anything."

Mingyue saw a pile of copper plates on the flight attendant's table, and the flight attendant was wiping them one by one with paper towels, "Sister flight attendant, what are you doing?"

Zhufu Gaoming suddenly felt bad when he saw the scene in front of him.

The flight attendant wiped the last few coins dry. "A passenger wearing a mask said that he accidentally got his change wet when he went to the toilet. He asked me if he could change it into whole coins, even if it was less, because it was wet. The lost copper plates were difficult to carry, so I exchanged them with him, and now they are all dry."

"The water has been wiped away and the fingerprints have been wiped away. I have to say that this murderer is very cunning." Mingyue put her hands into her trouser pockets and raised the corners of her mouth slightly, "Now the murderer should only have his jacket and film. As for the jacket, It is probably available in the market, and the negatives will probably be destroyed.”

Zhu Fu Gaoming looked at the flight attendant, "Do you still remember what the other person looks like? Or what clothes he is wearing?"

"He is wearing a mask. He must be a man. The color of his clothes. I meet a lot of people every day. I don't remember clearly, but he is not tall. He is much shorter than you." The flight attendant looked at Zhu Fu Gaoming and stretched out his hand to indicate his height. His tone was full of uncertainty, "Probably this high."

Zhu Fu Gaoming felt that this case was getting more and more difficult, "It was just one move away."

Mingyue looked at the pile of copper plates and raised the corner of her mouth, "The murderer's doing this made us sure that he must still be on this train. As long as we find him before the train stops, it will be fine."

"Go back to the source. Let's go to the scene where the deceased was found." Zhufu Gaoming walked into the carriage. "If we return the case to the beginning, we may find more clues."

Mingyue followed Zhufu Gaoming like a little tail and said with a smile: "As a suspect, should I go back to the crime scene to see if there is any evidence left?"

Zhu Fu Gaoming glanced at Mingyue speechlessly, raised the corners of his mouth, and asked seriously: "Meng Naisang, where did you hide your coat?"

"Huh?!" Mingyue was startled by Zhu Fu Gaoming's sudden question. She quickly walked a few steps to Zhu Fu Gaoming's side, "Officer, is there any black material on me?"

Zhu Fu Gaoming clasped his hands behind his back and continued walking forward, "Dirty material! Wetting the bed? Didn't you finish your homework? Did you fail the exam?"

Mingyue looked at Zhu Fu Gaoming speechlessly, but found that the corners of his mouth were slightly raised, as if he had understood something, "Mr. Kong Ming, you have not found a way to crack it, have you?"

"Indeed, I have some clues. I may need your cooperation when the time comes." Zhu Fu Gaoming looked at Mingyue with a confident smile on his face, "The sixteenth plan of the thirty-six strategies."

Mingyue repeated in a low voice: "Sixteenth strategy? Sixteenth strategy! Play hard to get!"

"Yes, there are some things that only the murderer knows, not us. Let the murderer relax his vigilance, and after he is fully exposed, we will have the answer we want." Zhufu Gaoming sat in the position of the deceased, leaning against the man who had been laid down. Sitting on the back of the chair, looking forward, he seemed to be thinking about something.

Mingyue sat next to the deceased and close to the aisle. She turned her head and looked behind her, but did not see the scar-faced man. She was confused and glanced around the passengers in the carriage. Only the scar-faced man was missing.

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Preview of the next chapter: What will happen to this express train?

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