Chapter 39 Chapter Thirty-eight

The next day, Gao Dong and Chen Forensic took the two original replicas of the tire nails, and drove a Honda randomly found in the county bureau to the parking lot under the Peninsula Hotel. Both of them were in plain clothes, not wanting to attract attention. After getting out of the car, Gao Dong took the tire studs and went to the tires. He carefully studied them. If they were placed directly under the tires, the car might bend after starting, and it might not be possible to drive right on the tire studs. , it should be that the murderer pressed part of the tire nail into the tire first, and then the car can be fully pressed in after starting the car.

Gao Dong did the same thing, got on the car and started the car again. He noticed that when the tire nails were fully pressed into the tire, there was no harsh sound of tire breaking. No wonder Zhang Xiangping didn't notice it at the time. After driving for more than 2,000 meters, they came to Fengqi Road and stopped. Gao Dong and Chen Fayi got out of the car and went to the side to observe. Although the tire nails were buried under the tires, so far, the car only showed a slight tilt. If you don't pay attention to the observation, you will not find that the two tires are a bit flat.

Gao Dong was puzzled: "Peninsula Hotel is only two kilometers away from Fengqi Road. The tire nails will not be effective during this period of time. Why did Zhang Xiangping know that the tire was blown at that time and get out of the car to check the tire?" Forensic doctor Chen said: "Is it possible that the nail piercing and the murder case are two different things?" Gao Dong shook his head: "Impossible, it must be related. First of all, the tire studs are self-made, and the surrounding car repair shops have never seen tire studs of this shape. Secondly, witnesses said that Zhang Xiangping said that the tire had blown, and there was a car next to it. Someone was checking the tires. These two points are enough to show that the tire blowout has an important relationship with Zhang Xiangping's murder. Perhaps the murderer used the blown tire to lure Zhang Xiangping out of the car to check. However, the Peninsula Hotel is only 100 meters away from Fengqi Road. For a two-kilometer drive, the tire studs will not be effective, so Zhang Xiangping should not feel that the tire is blown."

"Could it be that the tire nails were already stuck in when Zhang Xiangping's car was parked under the Peninsula Hotel, instead of being pushed in after the car started? In this way, Zhang Xiangping can feel the car body tilting after a long time." Gao Dong denied: "It's impossible. I asked Zhang Xiangping's friends. They didn't have a fixed time for the end of the card game. Sometimes they would continue to drink some tea and chat for a while after the game. The murderer had no way of knowing in advance when Zhang Xiangping would be." Leaving the hotel and going home. If he had pierced the tire nails into the tires in advance, Zhang Xiangping might have noticed that the car was tilted when he left, so he would not have started the car and drove away. Wouldn’t it be worth the murderer’s careful preparation? , It also made Zhang Xiangping more vigilant, and it will be even more difficult for the murderer to find a way next time."

"Well... Let me think about it, boss, your car is a Honda, and Zhang Xiangping's is an Audi. Audi cars are much heavier. Maybe the same tire nails will leak air at different speeds after being pierced in different cars. Woolen cloth?" Gao Dong thought for a while, and immediately felt that Lao Chen's judgment was reasonable, so he immediately called Zhang Yiang and asked him to find an Audi car of the same model as Zhang Xiangping's in the county bureau to drive over. This time, Gao Dong gained a lot from the experiment of using the same model of Audi car for tire nailing.

The Audi car drove more than 2,000 meters. After arriving at Fengqi Road, people in the car could feel a slight tilt of the car body. Although this feeling was not obvious, after getting out of the car, it was obvious that the car body was leaning. You can tell at a glance that the tire is flat. This discovery simply shocked Gao Dong, and at the same time created a strong sense of fear for the murderer. The murderer's self-made tire nails cannot make the Honda car have a clear sense of body tilt after driving two kilometers. It can only make the Audi car of the same model have a very obvious sense of tilt in the visual sense.

Isn't the murderer's calculation so profound that it makes people frightened? In addition, Gao Dong guessed that the diameter and quantity of the nails on the tire nails were also carefully calculated, just enough to make the Audi car have such a flat tire after driving two kilometers. Gao Dong pursed his lips, the murderer must have a background in science and engineering, otherwise, he would not have such an exquisite design. Gao Dong felt his heart beat faster, the murderer's technique was superb, obviously surpassing any murderer he had encountered in the past, and at the same time, his overall outline of the murderer became clearer.

To be able to make this case, there must have been experiments. Since the experiments were conducted, the murderer also owned an Audi car, and he had repaired the tires many times during the experiment. Yes, check the car repair shops one by one!