Chen Kang was slightly stunned, feed the cow?

"How did you remember to ask this?" Lu Chuan is a current survey, and his family is not a professional cattle raiser, so why do you ask this?

"Did you find anything?" Of course, Chen Kang is thinking about the investigation of the case.

"I don't know yet, but it feels like something might be wrong." Lu Chuan didn't say too detailed: "You ask first, and I'll take a look." ”

"Okay," Chen Kang nodded, snuffing out the cigarette butt that had burned to the filter: "Wait for my news." "Actually, when Lu Chuan just entered the room, it was okay to ask Sun Zhiyou directly about the situation.

But when you ask about this kind of thing, don't look at the criminal police in charge who are sometimes talking around, there are routines.

Whoever follows up will have to follow up until there is a breakthrough, unless there is no drama at all, or there is no effect of inquiry, and they will be replaced halfway.

This thing looks simple, but it's actually a mental tactic. Of course, not everyone has studied psychology.

It's not very useful to study that thing, it's all exercised in practice. Lu Chuan has always remembered the three points of attention that Liu Guodong explained when he came out.

A few words, less work, less self-righteousness. Those who can enter the task force of the provincial department do not have a straw bale. Of course, this is not only technical, but also about relationships.

As for Lu Chuan, it obviously belongs to the technical stream. Therefore, using Huazi to open the way, Chen Kang personally asked about the safest.

Sure enough, in less than ten minutes, Chen Kang walked out of the room again.

"I understand, Zhao Dong's cows need to add forage once a day in the morning, and they are usually fed water three times a day."

"Where to add forage? Where to feed the water? ”

"The hay trough is fed with hay, there is a special drinking bucket, and it is lukewarm, not cold." Lu Chuan didn't know the details of the feeding of cows, he had only drunk milk, not raised cows.

However, in this case, the problem arises. Zhao Dong died for two days, why didn't his cows rebel.

"Brother Chen, there is a question...... Lu Chuan told him what he had just seen in the cattle pen and the barn of the East Wing.

"Two days after Zhao Dong's death, a lot of forage was piled up on the ground in the cattle pen, so that the cows had grass to eat for two days in a row."

"And the sink...... Since Zhao Dong usually uses warm water and a special bucket to feed the cattle, how did this sink come about? Chen Kang also understood what Lu Chuan meant: "You mean that after Zhao Dong died, there were still people feeding his cows?" ”

Or ...... After Zhao Dong's death, someone specially put a lot of forage and drinking water in the cattle pen? ”

"Yes, otherwise, there is no way to explain the current situation!" Chen Kang only thought for a moment: "Let's go, report to Li." Three minutes later, Li Donglin stood at the railing of the cowpen in the west wing, watching the five cows leisurely grazing and nibbling on ice.

The ice was obviously hard, but there was clearly no other way for the cows. I can't die of thirst, I can only click and gnaw on the ice.

"Any thoughts?" Li Donglin was obviously asking Lu Chuan: "I don't understand a question, if the murderer did it, then what is his motive?" ”

"But if it wasn't the murderer who did it, who put fodder in the cattle pen?"

"Li, I want to do a detailed survey of the two wings to see if I can find anything." Lu Chuan's question is also Li Donglin's question.

It stands to reason that Zhao Dong was killed when Sun Zhiyou found out this morning and called the police. That is to say, during the period between Zhao Dong being killed and Sun Zhiyou finding out that he was killed, no one from the village should have entered Zhao Dong's courtyard.

Then, it seems that the forage in the cattle pen can only be piled up by the murderer. So, why did the killer do this?

If not the murderer, who would it be?

"Okay, if there is any need, the task force will fully cooperate."

"Yes!" In the ice and snow, it was the first time for Lu Chuan to do the field survey outdoors. And the situation on the site is very unsatisfactory.

The ground in the pen was covered with hay, cow dung, and cow urine that had been frozen to a yellowish brown. Two days, two nights, five cows, God knows how much they peed.

There is no way to collect and extract the footprints, so Lu Chuan can only start from somewhere else. At this time, in the face of such a complex and seriously damaged scene, the intermediate field survey skills gave Lu Chuan great support.

Compared with the indoor murder scene, the murderer thinks that the forage and water are all taken down by the murderer.

In the cattle pen and the east wing barn, the murderer obviously left more clues. For example, forage, the murderer must be through contact to move the forage from the east wing to the west wing.

Another example is the two semi-cylindrical buckets, which are obviously not Zhao Dong's original tools for giving water to the cows. The cutting marks on it are very new, judging from the size and material, the murderer divided the plastic bucket more than one meter high in the corner of the east wing into two, and then poured water on it.

In this way, there are too many contact surfaces between the murderer and the bucket. Carrying, cutting, and pouring water have all been in contact.

There is also a blue plastic bucket for the indoor stove, which is the only large container that can be found in the yard that can pour water.

Of course, iron basins and porcelain bowls on the bowl rack are also fine, but considering the size of the white drinking bucket, it is most likely that the murderer used a blue plastic bucket to hold water.

Then on the faucet, Lu Chuan also wiped his fingerprints and DNA samples several times. Zhao Dong's family has no running water, and the whole village does not have it, but they have their own well.

A water pump was installed, and a faucet was installed in the room. After this set, Lu Chuan was busy until half past three in the afternoon.

Although I was tired and smelled of cow dung, the results were also abundant. A large box, more than 70 evidence bags, which are not simple cotton swabs, hair, etc.

Here, it is very likely that there is key evidence to lock the identity of the murderer. The technical appraisal center of the provincial department, compared with that of the Haizhou City Criminal Investigation Detachment, is not the same in terms of equipment model or quality.

A lot of work doesn't need to be done by Lu Chuan alone. Most of the samples collected at the scene were processed by special personnel.

Lu Chuan can do his job well. This not only greatly improves the work efficiency, but also has a specialization in the technical industry, and there are many experts in this area in the provincial department.

In front of the computer, Lu Chuan was dealing with five one-third blurry and distorted fingerprints. Yes, on the two white semi-cylindrical drinking buckets in the bullpen, Lu Chuan collected five fingerprints!

The five fingerprints are stored in different locations, but they are similar in size. Basically, it's only one-third the size of a normal fingerprint.

In addition, it is very blurry and very distorted. Lu Chuan preliminarily judged that this should be a fingerprint left by the same finger.

The killer must have been wearing gloves when cutting the white plastic bucket, but the tip of one of the fingers should have been broken.

This causes a portion of the finger to come into direct contact with the white plastic bucket. This left five similar one-third fingerprints.

At this moment, Lu Chuan is doing fingerprint identification and analysis!