Chapter 231

"The deceased's name was Wang Feifei, a student of Shangnan foreign language school and a member of the Department of economics and management of level 16."

Shen Mengxi took a wallet out of the dead man's pocket: "their school has been notified. At present, the school is sending relevant principals."

On the student ID card, Wang Feifei's ID photo is also very beautiful. Walking in the school should also be the object of attention.

"Foreign language school?"

Zhong Tianzheng whispered, took a breath and looked at Ah Xiang: "where is the foreign language school?"

"In the pine work area."

"Pine work area?"

Zhong Tian just nodded, indicating that he knew, and there was no sound.

The dead have been taken away pending subsequent autopsy for more details.

The murderer's motive is temporarily unknown.

Now what they want to determine is the murderer's modus operandi and location to see if they can get useful information.

"Look around for clues."

The team leader quickly gave instructions and dispatched the surrounding law enforcement assistant police.

Zhong Tianzheng stood where he was, looking straight at the location where the body was salvaged, and looked up from time to time.

above.

It's the towering Xupu Bridge, full of traffic.

About ten minutes later.

Zhong Tianzheng turned his head and looked at the group leader around him: "did you find anything?"

"Not yet."

The group leader shook his head and explained: "there are few monitoring on this section of the road, and there are checkpoints on the sightseeing belt. The car can't get in at all, but there are no signs of struggle around. From the preliminary cause of death analysis of the dead, she was drowned alive, so I doubt whether the killer threw people directly off the bridge."

"Yes."

Zhong Tianzheng nodded and agreed: "I agree with you very much, because I'm sure she was thrown off the bridge."

"Huh?"

The group leader's eyes were full of questions.

"The navigable height from the deck of Xupu Bridge to the water surface is about 45 meters. At such a high height, this method is undoubtedly the fastest and safest way to kill people."

Zhong Tianzheng quickly said the basis of his judgment and stretched out his hand to point to the direction of the pier: "the location where the dead fell into the water is closer to the pier. Pay attention to that location. Are there several remaining water spots at the position more than one meter above the water surface?"

“……”

The group leader looked at Zhong Tianzheng silently.

Their current position is at least 20 meters away from the pier. How can they see the water spots above?

however.

Besides, there seems to be no reasonable explanation.

If the killer threw people into the water from the sightseeing belt along the river, he would face two big problems.

First: there is a isolation belt for sightseeing. The car can't get in. If a living person is brought to the sightseeing belt, she will certainly resist. The process is very difficult.

Second: even if he took people to the river, according to Shen Mengxi's preliminary judgment, the death time of the deceased Wang Feifei was very short, and the water depth along the river was not very deep, so it was impossible to drown people.

The main problem is.

Wang Feifei's death place is more than ten meters away from the shore. If you want to throw people into drowning, you can't use a motorboat. However, in Shangnan City, people who own private motorboats are registered big people, and the motorboats are under unified management, so the goal is too big.

In that case.

Zhong Tianzheng's statement is the most practical.

"However, your judgment has no basis."

Ah Xiang on one side expressed different opinions: "in such a high position, throwing a man tied with an iron ball should have a great impact."

"According to the most ideal environment, H = 12 ^ 2, we can get t, and then according to v = we can get that her falling speed is about 90ms." Ah Xiang spoke quickly, and she was doing mental calculation quickly: "with the help of the formula ft = MV, Wang Feifei's weight plus the five iron balls on her feet, there must be 200 kg, right? Assuming that the falling time is two seconds, we can conclude that the approximate impact force is about 4500n. "

"Although the things calculated by this formula are not accurate, it is enough to show that she had a great impact when she fell. If she really wanted to produce water spray, the water mark left on the pier is also large, not so small, isn't it?"

Ah Xiang looked at Zhong Tianzheng with a serious expression and his tone was full of impoliteness.

"Ha ha."

Zhong Tianzheng didn't know whether to cry or laugh: "I can only say that Comrade Xiang's previous physics results were very good, but he didn't stay in books too much?"

Ah Xiang retorted naturally, "what I said is wrong?"

"You're right."

Zhong Tianzheng nodded for sure, and then a brain banged a bullet on her forehead: "but you're not enlightened enough. Do you know what I mean?"

"Ouch."

Ah Xiang couldn't dodge. She rubbed her slightly painful forehead and complained, "how can you do this, but just hit someone? Violent submission? "

"When you were in the police school, didn't your teacher tell you that all knowledge should be judged according to the scene, present things and reality?" Zhong Tianzheng pointed out unhappily: "Comrade Xiang, I ask you to consider the reality when calculating. Wang Feifei's legs are pulled down by a heavy object. Her falling posture should be 90 degrees perpendicular to the water surface. Her shoulder width is 60, but the actual contact surface at the moment she enters the water is her feet, the contact area is very small, and then gradually becomes larger, How much water spray can it produce? "

"To put it bluntly, the more perpendicular the diver's entry posture is to the water surface, the smaller the spray, can you understand?"

“……”

Ah Xiang nodded thoughtfully. With a proud hum, she simply turned her head and didn't look at Zhong Tianzheng.

Originally I wanted to show off. Who knows, I was beaten in the face in an instant.

The group leader nodded approvingly and stood on Zhong Tianzheng's side, adding: "ah Zheng's hypothesis will be presented in the subsequent detailed autopsy report, so we don't have to tangle. The top priority is to go to the bridge to find the trace that the murderer may leave."

The group quickly turned to the top of the bridge.

At the same time.

The team leader also asked people to contact the traffic police department for the first time, perhaps the picture monitored by the camera.

Xupu Bridge is located on the suspended river, connecting the left and right districts of Shangnan City, with a total length of about six kilometers.

When the three drove up, the completely rising sun covered the A-shaped main tower.

From a distance, the whole bridge is golden.

When the car was driving on the two-way eight lane bridge deck, Zhong Tianzheng's line of sight had been looking at the electronic monitoring equipment on the bridge outside the window.

Basically.

Almost all the positions within the reach of the eyes are covered by the monitoring equipment. Will the monitoring capture anything?

Will it give a great impetus to the investigation of the case.