After the task was assigned, Liu Qing, He Liang, and Song Zhiyi and the other two arrived, followed the information found online and went to find the organizers of the cross-country race on May 12 to learn about the relevant situation.

Xiao Ran and Zhang Lei are preparing to go to Wanggong Mountain to investigate the site again.

However, when I was about to set off, Yu Yu followed up with the forensic box, "Green market, go to the vegetable market first! I will buy something and put it on site for experiments."

"What do you buy at the vegetable market? If you do the experiment, don't you have anything in your laboratory? You have to search at the vegetable market?" Zhang Lei asked in confusion.

"Meat, there is no meat in our laboratory!" Yu Yu said, sighing resentfully: "What a pity, I finally went to the vegetable market, but I couldn't eat the meat I bought by myself..."

"You bought meat to test those fly larvae, right?" Xiao Ran asked looking out the window.

"Yes, yes." Yu Yu nodded like a chicken pecking at rice, took out a medium-sized self-sealing bag from the box happily, and kept shaking in front of Xiao Ran: "Look at you!"

Xiao Ran turned his head and saw the fresh and fat maggots that were about to hit his face in his self-sealed bag!

"I'll go, what are you doing with these things?!" Even though Xiao Ran has always had excellent psychological qualities, he was shocked to see these densely packed little things that were about to hit his face.

Zhang Lei, who was driving, shouted when he saw these: "You perverted girl, you still bring these things with you when you go to the vegetable market, so you don't feel disgusted!"

"I'm bringing these to help you handle the case!"

Yu Yu gave Zhang Lei a blank look, pointed to the fresh and fat maggots in the bag, and explained: "These are the best developed larvae I picked from the dead body. In addition, after my observation yesterday, there were no pupae that had broken shells on the scene, which means that the maggots on the dead have not yet turned into flies."

"Then?" Zhang Lei grinned and forced himself not to look at what Yu Yu had in his hand, otherwise the breakfast he had just eaten might have been vomited in the car!

Maggots picked out from the dead!

This girl can do this.

When Zhang Lei thought of the dense situation on the deceased yesterday, his scalp became numb, especially when he thought:

In the middle of the night, Yu Yu looked down at the corpse, carefully holding tweezers and picking out such a ball of maggots one by one. After that, he raised his hand and slid the chubby and soft bugs, and smiled and said, "Perfect"!

Can't think, can't think...

"We did research last year. You should know that insects are the most common among the destruction of corpses. Flies are very sensitive to corpses. Sometimes they can gather on the surface of organisms before they completely die, and they start laying eggs.

After the fly eggs hatch, they secrete a liquid containing protein-soluble enzymes. The first thing they need to digest and destroy is the soft tissue of the corpse, and the fat in the abdomen is the first choice, and then invade the subcutaneous muscles and internal organs.

The most common species of fly in the local area. In summer, fly eggs usually hatch into larvae after 12 to 24 hours, and then turn into pupae after 5 to 7 days. The pupae breaks out into flies after 3 to 5 days."

Yu Yu put the larvae in the bag back, "These are the best-developed batches of larvae. I put them on the scene with my meat and it will take several more days to watch them regularly to turn into flies.

After determining this time difference, I cultivated two groups of fly eggs outdoors and in the laboratory, compared the time taken to observe the growth of the fly eggs to these larval states, and then eliminated the interference factors to calculate, and then I can get a more accurate time for the deceased to die."

"I admire you. Although I don't understand what you said, I think it's so powerful!" Zhang Lei joked.

Xiao Ran silently listened to Yu Yu's experimental ideas and suddenly asked: "But if you do this, it will take a long time?"

"It'll take ten days and half a month."

Yu Yu thought for a while and said, "But this is just a bottom-up experiment, just in case. What if you can't figure out the situation in a short period of time, with my experimental results as a foundation, it may be of great help to you."

"But you know, our Xiao Ran has always handled cases very quickly. If you haven't come out yet and we have solved the case, wouldn't you be in vain?" Zhang Lei said with a smile.

"It's better than if you want data from me then, but I can't get the results, right?"

Yu Yu didn't care at all, but then he thought about it and looked at Xiao Ran and said, "That's right, I haven't seen a case that has been in your hands for more than half a month. Alas, if you make me work in vain, you have to treat you to dinner!"

"What does it mean that I'm going to waste your work? I'm not a god. Besides, I can't handle the case alone. You still have to rely on your help."

Xiao Ran glanced at Yu Yu, "But what you said is quite pitiful, so let's do it. If the case can be broken before the results of your experiment come out, I will treat you to a big meal, a lot of meaty ones!"

"It's settled!" Yu Yu cheered.

While talking, Zhang Lei drove to a vegetable market on the way, and the vegetable market was crowded in the morning.

Yu Yu had a lot of effort and picked a large piece of pork that was fatter and thinner, and then asked the owner to divide the meat into three evenly. Then he returned to the car and headed to the Wanggong Mountain scene.

On the side of the road at the foot of the mountain, an auxiliary policeman was dozing in the car. Zhang Lei parked the cars side by side. Without alarming the auxiliary policeman in the car, he went straight up the mountain.

Next to the mountainside guard belt, there was an auxiliary police officer guarding the scene. The three of them greeted him and then walked over to the scene.

It has to be said that the atmosphere during the day was much better than last night. After the body was removed, most of the odor disappeared after the air flowed overnight, and only a little stench remained in the mountain pit.

After helping Yu Yu fall to the bottom of the pit, Xiao Ran and Zhang Lei began to survey the outside of the mountain pit again. Last night, their attention was all around the mountain pit, and this time they wanted to expand the scope of survey and search.

Taking the deceased as the center of the circle, Xiao Ran and Zhang Lei spread out. The shrubs and weeds near the edge of the pit were all flattened yesterday. It was quite easy to check, but there were grass and trees farther away, so I could only push the weeds and shrubs a little bit to check carefully.

"I've discovered it! Xiao Ran, come and see!"

A shout came from Zhang Lei, and Xiao Ran immediately walked over and saw a piece of green stone the size of two steamed buns, with many edges, which were quietly embedded in the soil beside the grass.

The most important thing is that there are mottled blood on one side of the stone, and there is a bloody handprint on the other side!

After Zhang Lei took out the camera to take a photo, he carefully put the stone into the physical evidence belt and said excitedly: "This must be another murder weapon. The deceased's fingers might have been smashed by this stone. Perhaps the murderer's fingerprints can be extracted from it!"

Xiao Ran nodded and looked at the small pit left by the stone on the ground. "It should have been thrown over by the suspect after the murder."
Chapter completed!