Insect Witness

According to Shen Yuan's reminder, the police had indeed found a cave about 600 to 700 meters away from the scene of the corpse. The cave was filled with dirt and broken grass that was brought in from outside. The water in the cave was two meters high.

"According to your knowledge of entomology, flies usually don't lay their eggs in the yin. Does that mean they had sex before they died?" a policeman asked.

"If Wang Kaili had had sex with Ah San, it would have been before the rain. But this way, after being washed and soaked by the rain water, it was equivalent to having one's Yin X washed once. "Once the blotches are washed away, the smell inside will cease to exist, and there will be no more flies inside, but the fact is the opposite."

"I see. The smell that attracts the flies must be the filth left behind by someone who raped the dead, right?" Another policeman said.

"Right, the answer is the traitor! As for the adulterers, it was right after Wang Kaili had drowned and was just about to be washed down by the rain. The corpses were still relatively fresh, their skin was still elastic, and with Wang Kaili's pretty face and well-developed figure, there was no one in sight when the males passed by. After committing adultery, he quickly fled the scene without even putting on his clothes for the deceased. In this case, the assailant either knew the two dead or had inadvertently passed by. If it is the former, it means that the molester may know the purpose of Wang Kaili and Ah San's arrival at this mountain. "

Shen Yuan himself was also shocked by this deduction. Although Wang Kaili and Ah San were both from Xiangheng Company, they had been arguing for quite some time. Why did they come to the Grand Canyon together?

Returning to the Lai City Inn, a thought flashed through Shen Yuan's mind like a spark. Shen Yuan then made another bold hypothesis. If the plum fly entered the yin, would there be DNA left behind by a sex offender other than Wang Kaili's? Because when the flies enter, they are likely to ingest fresh spots remaining in the yin, so that the DNA of the sex offender can be detected.

Shen Yuan immediately got up, put on his clothes, opened the laptop he brought with him, and went online to search the internet for Google. According to the information obtained, there was a special part of the insect, the quaking, which was used to store undigested food. There is no secretion of proteolytic enzymes in the tremella, although the insect has a small amount of protease in its saliva when it devours food, and this digestion has little degradation of the human DNA contained in the external food, so that the food is preserved because it is not digested. In this way, useful information can be obtained from the food of the maggots.

Shen Yuan felt a burst of excitement, he found a way to lock on the suspect.

Shen Yuan sent the specimens to the Biochemistry Department of the School of Medicine of the Central South University. Through QQ guidance, he instructed the experimenter to extract the moans from the maggots, mash them, and place them in a refrigerator with a negative temperature of 70 degrees. The purpose of this was to make the samples easier to crush later, and to minimize the damage to the DNA double strand continuity left behind by humans, which would be beneficial for identification. Then the DNA was extracted from the quaking and amplified, and it was found that the DNA was different from Wang Kaili's and did not match with Ah San's. (This conclusion does not rule out the possibility that the two of them had sex before they died.) The testing technology has verified Shen Yuan's thoughts, there is indeed a third person on the scene.

Shen Yuan told Ding Wei the result. When Ding Wei arrived at the Lai City Public Security Bureau, he learned from the police that they had given up further investigation because there were no new clues.

Ding Wei was dissatisfied with the police's negative attitude towards the case and decided to personally pay a visit to Qiu Yunsan. At the entrance of Qiu Yun Mountain, two paths appeared in front of Ding Wei. One was the so-called "Road to Heaven", leading to the peak of the canyon entrance; the other was a hidden path that led to the inside of the canyon. After some analysis, Ding Wei decided to head deeper into the valley. After about half an hour, they reached the bottom of the canyon. There was an artificial reservoir built in the fifties, and the embankment was covered with deep weeds. It looked like no one had been here for years.

There was a waterway beneath the reservoir that connected with the terraced paddy fields below. The paddy field was reclaimed by the villagers of Qianyunzhuang in the 1950s. After the reform, there was no one to manage the reservoir, more mud was accumulated at the bottom of the reservoir, and the storage capacity of water continued to decrease. When the water supply was limited, farmers fought over it and even started to curse. With the increasing cost of farming, people are basically giving up farming. The ditch under the dam ran along the edge of the gorge to the beach of the Lai River.

This time, he went up along the ditches and arrived at the deepest part of the Grand Canyon. He discovered that the reservoir in the gorge was basically dried up.

No, after the rain, there should be more or less stored water here. Ding Wei thought to himself as he carefully examined the area. He discovered that the two thick wooden planks that usually blocked the exit under the reservoir dam had already been moved away. Two thick planks served as a gate. In normal times, when it rains and the gates are closed, they will act as a reservoir for water. In dry weather, when the gates are released, the water in the reservoir will flow down the gutter into the rice fields below. Because of the cold air and water at the bottom of the valley, the paddy fields in the valley could only be planted once a year, but now the villagers had given up on the season. The paddy fields were filled with weeds. Therefore, the gate should not have been opened for many years. But now, it was actually opened!

On the day of the accident, although there had been a flash flood, the dam had remained intact and had not been destroyed by the flood that poured down from the mountain.

So what happened to the flow of water in the reservoir when the sluice gate under the dam was opened? The water in the reservoir, combined with the mountain torrents that poured down from the hillside, was enough to create a terrible flood. Shen Yuan walked along the low-lying areas and found a cave. Ah San and Wang Kaili's corpses were about 600 to 700 meters away from the cave. The cave was a shallow cave, still damp in the dark, and the ground was covered with broken branches and fallen leaves from above, and mud from the bottom of the reservoir. Ding Wei understood that with the sudden surge of energy from the flood and the release of water from the reservoir, the flood was unstoppable. Wang Kaili and Ah San, who were unprepared, were drowned in the cave and lost their lives.

What kind of accident was this? Ding Wei thought of the couple walking up the mountain, but there was only one woman when they went down the mountain. Where did the man go? Tinwyl walked up the path, starting with small stone hills. From the outside, there was not a single bit of emerald green, let alone any plants. There was a pile of bare rocks of all shapes and sizes scattered around the edge of the valley, covering a radius of about half a kilometer. Some of the rocks were jagged, some were sharp, and some were even low-lying. He had to take a detour to get to the heart of the mountain.

This was the highest peak of Qiu Yunsan. Standing here, one could overlook the surroundings. It could be said that the scenery beneath the canyon was unobstructed. From here, he could see the area where Wang Kaili and Ah San's bodies were lying at the bottom of the canyon. There were paddy fields, ditches, and reservoirs.

What kind of people were this man and woman? Would they come to the highest peak? Because of the rain, it was almost impossible to tell from the footprints if anyone had ever reached the summit.

Had they witnessed the deaths of Wang Kaili and Ah San? Or were they the killers?

In the previous crisis, A-San had been insulted by Wang Kaili. Would he take revenge on her because of this? If he took revenge, would he choose to perish together?

Ding Wei tripped on his way down the mountain and almost fell into the canyon. At that moment, he suddenly discovered that the branch of a small tree in front of him had been broken. On the grass below the broken branches, there were traces of something heavy pressing against it. Following these traces, he discovered that there were more small trees that had been snapped off. It seemed that the man must have accidentally fallen, to the point of him rolling down from a high place. In any case, he definitely did not climb down on purpose.