C75

The results of toxicological biological analysis were as follows: blood alcohol 220mg/mL, gastric contents analysis showed that caffeine 0.85mg/g, diazepam 0.12mg/g, norazepam 0.03mg/g. Toxicological analysis revealed that the deceased had taken heroin several hours before his death. The average temperature of the day was 20.3 ℃, and the average temperature of the previous day was 23.18 ℃.

After removing the fat from the skull, Shen Yuan bleached it with hydrogen peroxide and saw many small holes on the surface of the skull. This meant that there were flies laying eggs there. If there were knife wounds or gunshot wounds, the way these insects ate would be very different. Because the insect must first reproduce where there is a wound.

From the fact that the dried body had rotted, it was no longer possible to determine exactly how the deceased had been murdered. Shen Yuan made a sample analysis of the remaining insects in the body, and selected the filament green flies as the time of death. The most common species of flies in spring, summer and autumn in most areas of China, and one of the first flies to arrive at the corpse, the locality of the flies is extremely wide, but some experiments show that the development rate of larvae is faster in the rabbits injected with morphine. In other words, eating body tissue containing morphine will affect its growth and development. According to the normal insect growth law, the mortality time deviation will increase. Shen Yuan did some experiments, and the results confirmed these claims. He also observed that the larvae fed on morphine entered the pupal phase earlier than the control group. According to the shape of the flies spawning, larvae and maggots in the body. Combining the survival stage, species and area of the flies, Shen Yuan deducted the influence of morphine in the calculation, and finally deduced that the deceased could have died 15 days ago, the earliest time was September 12 and the latest time was September 14.

The only species of flies raised to adults and identified as the silvermouth flyfly. In Changsha, the fly was found only on the food containers around the garbage heap and in the zoo. So far, the fly has not been found on the indoor corpses in Changsha. Furthermore, there is no literature on the presence of the fly in the body, and the higher the house floor, or the cleaner the environment, the more difficult it is to find traces of it. Thus, it appears that the silvermouth flyfly can be used as a characteristic species to distinguish whether a body found in an environment that is more or less closed or at a relatively high altitude has ever been left outside for a period of time. In a city such as Changsha, where there are only a limited number of carrion flies, it is helpful, Shen says, to determine whether a corpse has been placed outside a room for short periods of time or even on a balcony. From this, Shen Yuan concluded that the first scene of the murder was not on the balcony on the second floor of the rented apartment, but somewhere else outside. That is to say, the deceased was killed and placed at the first scene for a period of time before being moved to the rental house, and it was likely that the migrator had grasped the key to the rental house so that the front door could be opened with the key and thrown onto the balcony.

The usual practice of the murderer is to try to move the victim into the field after he has been murdered indoors, in order to prevent anyone from seeing where the body has been and to make it more difficult to solve the crime. But the murderer in this case, who seems to have done the opposite, actually moved the body indoors.

After hearing Shen Yuan's analysis of the crime scene, Ding Wei felt that what he said made sense. Without a doubt, Li You Chun was not murdered indoors, but in the wilderness. Ding Wei called Little Fatty and Little Gao to come with him to the northern outskirts of the rubbish dump.

When they got there, the three of them found that the wanderer was still searching for what they needed beside the dumpster, as if he had no interest in Ding Wei's group's arrival. His left hand was black, and his index finger was wrapped tightly around an old piece of cloth. It seemed that his finger was injured, and he struggled with it with his right hand.

There was a lot of new rubbish added to the pile, and not only had to endure the stench, but also had to be patient in order to search through it bit by bit. Even so, the three of them didn't understand what they could find out from it. They didn't know if the victim had been killed here. It would not be impossible if the victim had been killed and moved here. Whether he was killed here or moved here from the first scene, he would more or less leave behind some evidence or evidence. The three of them endured the huge stench for two hours before finally finding nothing. Finally, the three of them broke down and decided to give up.

The insect evidence gathered by Shen Yuan had been reaped. While he was collecting the remaining insects in the body, the jeans of the deceased also collected some specimens of the prickly plant seeds. No similar seeds were found around the dumpster. Where could he have come from?

Ding Wei believed that since the victim's body may have appeared in the dumpster, the body was found in a rented house a kilometer away from the dumpster. Therefore, the wild plant seed must be somewhere between the garbage dump and the rental house.

The two of them began their search along this route.

Surprisingly, the two found the burr-shaped plant seed near Ah Shuang's grave. After comparing it with the plant seed of the dead man's jeans, they confirmed that the plant seed on the clothes of the dead man came from the cemetery. This was an extremely important clue for Li You Chunsheng to visit Ah Shuang's grave.

It was not far from the dumpster. If the victim was killed in the cemetery, they could move the victim to the dumpster and hide him, then wait for the opportunity to move the corpse to a rented house. However, this also raised a question. Why did the murderer spend so much effort just to go back and forth?

Since the Hengzheng Judicial Identification Center does not have a dedicated laboratory and does not have enough knowledge to explain the seeds, Shen sent samples of the seeds to a lab in Shanghai called "Seed Technology Laboratory" for inspection. By professional analysis, botanists identified the seeds as those of the larger brassica and the smaller strawberry herbage. Eventually, experts determined that the seeds on the dead man's jeans were identical to those found near the cemetery.

The dead man's clothes had been identified by the two officers following him, and were now completely different from the clothes they had worn when they had followed him. They clearly remembered that they were not wearing a gray jacket and jeans, but a brown suit. This meant that Li Youchun had changed clothes and pants with another person before he died. The man, dressed in the clothes of Li Youchun, came out of the dumpster pretending to be Li Youchun. He then headed off in the other direction, leading the two policemen away from the dumpster and leading them away from the dumpster.

Ding Wei said to the two police officers who were following him. "You saw that Li Youchun was not Li Youchun, but someone who looked a little like Li Youchun. If you didn't see the front, you'd be fooled by the clothes and the back."

"Could Li Yichun have been killed at the garbage dump?" the tall policeman asked.

"It's hard to say. The only evidence is that the body stayed at the dump for a while."

"But why did Li Youchun stay in the dumpster for so long?"

"One possible reason is that he was waiting there for someone. He already knew that the police were watching him, so he chose a very special place to let our security personnel relax their vigilance and become careless. This gave him a chance to escape or to make contact with someone. Another possible reason was that someone had asked him to wait there. This person could be the murderer. "

"But the result of the insect deduction is that Lee Yo-chun died in the open air, on the very day we followed him. Why would the body appear in a rented room about two miles away from the scene?" another policeman asked.

"The victim wasn't killed in the rental house. The killer killed the victim somewhere outside the house and moved the victim's body to the rental house."

Who was the murderer of Lee Ye-chun? Ding Wei immediately began to investigate.