4-1-603, Donghua Garden, Nanfeng Road, J County.

"Officer, you take a saliva. Lao He laughed with him, holding an old teapot in one hand and two cups in the other, and the cups were still dripping.

"Don't worry, you sit, this... Well... After 11 o'clock, we will continue to talk. Liu Shuyuan looked at his watch.

It was already past eleven o'clock in the evening, and Liu Shuyuan came over at six o'clock in the evening today and stayed here for five hours. This is also the first time that the owner of this house has brought out water to entertain the two, and his tone has been much looser.

"I... Officer, why don't you be here tomorrow? You've been here for two days... I have to go to school early tomorrow morning to take my grandchildren to school..."

"Lao He, I'll give you an account, and I have to do it today. Liu Shuyuan sighed: "The Li family is a family of five, and the bones are not cold. ”

"But..."Lao He was a little anxious, "what are you telling me to do all this... Oops, alas ... Officer, you say, what are you trying to do with me..."

"I just said that I can't wait until tomorrow. Sun Jie also nodded affirmatively, giving Lao He a psychological hint that he would not give up.

"Lao He, we've known each other for two days. Liu Shuyuan took out a piece of paper and pressed it on the table: "Do you know that your grandson has been bullied three times recently in school, and he was beaten five days ago?"

"What?!" Lao He was anxious: "Who did it?"

After speaking, Lao He immediately thought that his grandson was indeed injured five days ago, but his grandson said that he fell...

"Tell you who it is, what are you going to do?" Liu Shuyuan said seriously: "On the back of this paper, it is the situation of several people who bullied your grandson, do you want to see it?"

"I..." Lao He was held there.

Lao He's children died in a car accident a few years ago, leaving him with a grandson, who is now in primary school. Because of family reasons, my grandson was always bullied at school, but every time I asked, my grandson wouldn't tell him.

...

The case in J County has been arrested.

The suspect was the prospective son-in-law of the deceased's family.

The cause of death was a bride price.

The family surnamed Li, that is, the deceased's family, was a local farmer and asked for a huge bride price.

The murderer is the boyfriend of the Li family's dead daughter. Now, except for the youngest son, the Li family is still alive, and everyone else is gone.

To put it simply, it was supposed to be time to talk about marriage, and the man also gave the money for the marriage, but in the end, the woman had to pay a high bride price.

Province A is not a big province for bride price, but it does cost a bit much, 188888 yuan.

In a place like J County, the standard in 2015 would not exceed 100,000 per household, and the man prepared 80,000, which was far from enough.

The money itself is actually nothing, but the woman feels that the man's family can come up with more money, and temporarily changes the hexagram.

The most important thing is that the woman was originally good, but when she finally wanted to talk, she rebelled, regardless of her feelings for many years, and completely listened to her parents.

The man is really cold-hearted, and his years of relationship are actually because of this...

If the bride price is an obstacle, his girlfriend's attitude is like a knife stabbed by his companion.

It's like two people going up the mountain and encountering a tiger, and instead of helping, the companion stabbed the other for his survival. Companions are more hateful than tigers.

The man is also a college student at a prestigious university!

However, the current people don't look at what you can do in the future, they want the results now.

When you get married, ask "Do you have a house", "Do you have a car", "Do you have a deposit?"

No matter how much you earn now, no matter what your future holds, ask directly about the deposit... What the hell is this question...

The man was helpless, the marriage was not married, and he asked for the return of the deposit of 10,000 yuan and gold jewelry, but the woman did not return it.

The more he thought about it, the more angry he became, but he couldn't bear it, so he made this decision and used some of his authority in the school laboratory to get a small amount of cyanide, and then poisoned the locusts.

Regarding this issue, Liu Shuyuan asked several doctors of biology on the way to District J County to determine the basic cause of the locust toxicity.

It has now been found that social locusts, stimulated by high densities, cause a gene to convert phenylalanine into phenylacetaldehyde oxime, which is rapidly hydrolyzed into phenylacetonitrile.

Phenylacetonitrile is an olfactory warning sign to which locusts' natural enemies are disgusted. And if the natural predator insists on eating it, phenylacetonitrile will be converted into highly toxic hydrocyanic acid. In this way, birds can be poisoned if they eat it.

The mechanism of action of cyanide is very wide, as long as there is a cell structure in the body, the need for mitochondria to provide energy organisms are afraid, locusts themselves are no exception, so the concentration of this thing is not as high as imagined, after high-temperature frying, part of it volatilizes, and it is unlikely to poison a family of five.

Moreover, the hydrocyanic acid produced by locusts is volatilized in real time, and there are not so many remnants in the body of locusts, and if you want to eat people to death, you generally have to eat several kilograms in a row.

It is meaningless to talk about toxicity without measurement, apples and other plants of the Rosaceae family, for example, apple seeds also contain cyanide, but if you want to eat dead people, you have to eat a ton of apple seeds in a row, tomatoes actually have a certain toxicity, you only need to eat four tons at a time to be poisonous~

With the development of autopsies, forensic doctors gradually discovered that the cause of death was cyanide poisoning, a degree of poisoning that could not be achieved by poisonous locusts.

Therefore, the local police still carried out relevant work quickly.

However, before the cause of death was announced, Liu Shuyuan started the operation in advance because of the adequate preparation for the preliminary work, and arrested the suspect as soon as possible.

At this moment, the chain of evidence is still a closed loop.

No one knows where the suspect bought the locusts from, or how they were delivered. In this closed loop, there is an eyewitness Lao He, but Lao He is unwilling to testify.

"He..."Lao He's voice was a little low: "At school, someone bullied my grandson, won't anyone stand up to help?"

"Perhaps, many people are as indifferent as you, maybe they know what justice is, but they cherish themselves too much, and they hide behind when they encounter things, so that's why they are like this. Liu Shuyuan sighed.

Lao He was silent for a few seconds, but still lowered his head: "Officer, let's go..."

"Good. Liu Shuyuan turned around, and when he was about to go out, he said, "I have already solved the matter of your grandson." ”

Liu Shuyuan's words seemed to have a kind of magic, and Lao He believed it at once.

He was not afraid of the murderer, he was afraid of the man who sold locusts. If this case is successful, one person is not enough, and the suspect also bought off a locust seller, and clever words were used to let this person sell cheap and poisonous locusts to the deceased's family.

Now, the person who bought the things is dead, and Lao He has also sold locusts in the market in the past few days, and he knows the family surnamed Li, who was originally from a village before his children had an accident. Later, when his children died, in order for his children to go to school, he took the compensation money to buy a sixth-floor house in the county seat and accompanied his grandson to and from school.

There are a lot of locusts sold in the market recently, and those who know the family surnamed Li are the only ones.

"Officer... Sit down and have a glass of water... Alas..."