After thinking about it like this, the police officer, Mr. Mai, said: "The situation exposed by this snuff bottle is somewhat special.
If you say that Deng Chengfeng is the murderer, then after he tampered with the snuff bottle, he will definitely pay great attention to the snuff bottle and will not allow others to touch it again.
Under such circumstances, how to explain the fingerprint of another person besides Zhang Taijiang that appears on the snuff bottle?
What kind of person could do this under Deng Chengfeng's attention?
Why would he touch the snuff bottle for no reason?
Judging from the fact that he only left two finger prints on the body of the snuff bottle, this person was careful and cautious when taking the snuff bottle.
This shows that this person knew that there was something wrong with the snuff bottle he took, otherwise he would not have paid such attention.
If Deng Chengfeng had tampered with the snuff bottle early, he would have had time to perform detailed operations.
For example, he used gloves to add poison to the snuff bottle so that he would not leave his fingerprints on the snuff bottle.
But if this is the case, it cannot explain why there is a third person's fingerprint on the snuff bottle.
Therefore, I agree with what you said, Mr. Yong, that this snuff bottle has two identical existences.
This operation is the simplest and easiest operation.
But no matter what, the fingerprints of the two fingers that appeared on the snuff bottle must have been left by the murderer.
Regardless of whether he actually committed the poisoning, as the person who made the murder weapon, he was one of the murderers of this poisoning and murder case.
Poisoning homicide cases have the same characteristics as other homicide cases, but they also have completely different standards for identifying the murderer.
The same thing is that in homicide cases, the manufacturer of the weapon that caused the death of the victim, whether it is a firearm or a knife or instrument, will not be held criminally responsible.
Similarly, in poisoning cases, the manufacturing company or personnel who manufactured the poison will not be identified as the murderer.
However, anyone who mixes poison into normal food, drinks or medicines will definitely be included in the scope of the murderer and be held criminally responsible.
The reason why there is such a determination standard is mainly because most poisoning cases have a professional background.
In order to severely punish criminals who use poison to kill people, there are such legal provisions.
That is, anyone who commits a murder using an object filled with poison or a container designed and modified to hold poison is deemed an accomplice in the murder and is identified as the murderer."
After the police station officer said this, he picked up the water glass on the table, took two sips of water, and moistened his throat.
Yong Ming also had a different experience with what Mr. Mai from the police station said.
He knew that what he just said had been heard and taken to heart by the police officer.
Now, what he said was a subtle response to himself.
This shows that Bureau Mai of the police station has realized that there is a "black sheep" in his team.
Now, it is obvious that he has not finished what he wants to say. What is the purpose of stopping at this time?
After Yong Ming thought about it for a while, he smiled and said: "Mai Ju, thank you for agreeing with my speculation. This makes me feel very encouraged.
Regarding the doubtful point on the snuff bottle, I feel like you haven't finished speaking yet.
If you don’t mind, please continue to finish what is left unsaid, so that we can conduct in-depth analysis and discussion on the case.”
After Yong Ming finished speaking, Mai from the police station nodded in response to Yong Ming.
After putting down the water glass in his hand, he said: "Now, let me assume that the fingerprints of the two fingers that appeared on the snuff bottle were not left when poison was put into the snuff bottle.
So, what I want to talk about next are a few other doubts I have about the case.
My first question is, if Deng Chengfeng changed the snuff bottles in advance, wouldn't he be worried that someone would use the snuff bottle without knowing it before Zhang Taijiang came into contact with the poisoned snuff bottle?
Did the snuff cause accidental poisoning, causing the poisoning and assassination operation to fail?
If it were another situation, and Deng Chengfeng changed the snuff bottle after Zhang Taijiang entered the tea house, it would be guaranteed to reduce the possibility of the snuff bottle being touched by others.
But the fact is that the fingerprints on the snuff bottle body indicate that someone like Zhang Taijiang touched the snuff bottle.
So who could touch this tampered snuff bottle under Deng Chengfeng’s nose?
Assuming that Deng Chengfeng is not the murderer, then there is no doubt that the murderer is someone from the tea house.
Where did he get his confidence from?
How could he guarantee that the snuff bottle he had tampered with would definitely attract Zhang Taijiang's attention and pick it up to play with and use?
Looking at it this way, the poisoning and murder case that occurred in the "Ruixiangxuan" tea house seems to have some mysterious meaning in it.
No matter how I think about it, I feel that many things are so coincidental, even so coincidental that it seems unreal."
Yong Ming was well aware of the above analysis after the assumptions made by the police station's Mai Bureau, and the resulting doubts.
In fact, there is another possibility at the crime scene, that is, the fingerprints of two fingers belonging to an unknown person that appear on the snuff bottle are because the snuff bottle was exchanged or replaced after Zhang Taijiang was poisoned.
It is left over during processing.
Saying this will definitely make people feel confused.
How could anyone replace or dispose of a snuff bottle after the victim was poisoned?
Wouldn't this be superfluous?
And, what is the purpose of doing this?
Are you doing something to cover up the facts for Deng Chengfeng?
Isn't this right?
If this person wanted to help Deng Chengfeng, he should have replaced the snuff bottle with one that was not mixed with poison, right?
Or, he simply took the snuff bottle away from the scene, creating a situation where there was no evidence of death. For Deng Chengfeng, that could be considered a helpful thing.
However, this person did not do this. Instead, he left the poisoned snuff bottle at the scene after Zhang Taijiang was poisoned.
So the purpose of this person is not to help Deng Chengfeng, but to do the opposite.
What this person must do is to frame Deng Chengfeng.
Through secret operations, the fact that Zhang Taijiang was poisoned and killed in the "Ruixiangxuan" teahouse became a matter of conclusive evidence.