Faced with everyone's doubts, Su Yan did not immediately refute. He looked around and then said: "Everyone knows that there is a big difference between shooting at close range and shooting from a long distance..."
Forensic doctor Ren and others nodded, especially the criminal technicians. Although they were not bullet mark experts, they also knew the difference.
"The deceased's head was penetrated by a bullet. If it was from a long distance, the entrance would be small and the exit would be large. However, when shot at close range, it is just the opposite."
A criminal technician explained to the crowd.
"According to our preliminary investigation just now, the deceased was shot at close range!" Another criminal technician interjected.
Su Yan nodded: "Since everyone has no objection to this judgment, it means that the murderer was also in the house at the time, otherwise the deceased would not have suffered such wounds."
Everyone nodded, they really had no objection to this conclusion.
"So I would like to ask, where did the murderer hide to make the deceased unprepared and start his attack?"
Facing Su Yan's question, forensic doctor Ren immediately said: "We have already investigated. Look at the partition opposite the deceased, which can be used to hide the murderer."
Others also nodded and said: "This partition can indeed hide the murderer."
Su Yan smiled when he saw that everyone agreed with Dr. Ren's statement.
"The edge of the partition can be made of frosted glass more than a foot wide!"
Su Yan's meaningless words made everyone stunned.
"What happened to the frosted glass? You also said it was frosted glass. This makes it even harder for the deceased to tell whether the person is a family member or a murderer?"
Forensic Doctor Ren frowned and retorted to Su Yan impatiently.
In his opinion, although this young man could tell the difference between bullets, he was not good at other things and he also liked to talk a lot.
He was no longer prepared to continue arguing with him. He had to write a report when he went back, so why waste time arguing here.
Su Yan saw the forensic doctor's impatience, but still asked calmly: "The time the deceased was killed was around one o'clock in the afternoon?"
"Yes, I can guarantee this 100%." Forensic doctor Ren thought that Su Yan was questioning his forensic ability and said with a cold face.
Su Yan smiled slightly and said meaningfully: "At about one o'clock in the afternoon, the sunlight passed through the window of the villa and hit the glass. The sunlight passed through the glass and was aimed at the position where the deceased was sitting."
"ah?"
Forensic Doctor Ren and the others were stunned. They had never thought about this problem.
"Did the afternoon sun just hit the spot where the deceased was sitting?" someone asked in disbelief.
A criminal technician looked at the sunlight coming in next to him, squinted his eyes and calculated, then nodded and said: "Sergeant Su is right. When the deceased was killed, the sunlight was shining on the position where he was sitting."
The criminal technician was very authoritative in this calculation, so everyone was convinced by his words and accepted Su Yan's statement.
"What does this discovery mean?" someone asked in confusion.
"The sun shines on the deceased's position. If the murderer passes by the glass at this time, it will block the sunlight and disturb the deceased."
Su Yan said.
When everyone heard Su Yan's analysis results, they were stunned again. None of them had thought of this.
This phenomenon seems simple, but it can overturn the results of the research and judgment of forensic doctor Ren and others just now, thus affecting the investigation direction of the case.
"Could the deceased regard the murderer as a family member and not pay attention?" Forensic Doctor Ren said unconvinced.
Before Su Yan could speak this time, Shen Liqing, Zhao Yang and others all shook their heads and rejected his statement.
"No one else in the Wei family was home at that time. If someone suddenly appeared, the deceased should pay attention." Zhao Yang said.
"Even if the murderer blocked the sun and alerted the deceased, it is not impossible for the murderer to come out quickly and kill the deceased with one shot."
Someone said again.
Everyone was silent and looked at Su Yan to see how he would answer this time!
Su Yan shook his head again.
"Do you know how long it takes for an excellent sniper to aim at the target, adjust his breathing, pull the trigger, and hit the target?" Su Yan asked, looking at everyone with bright eyes.
Although all the police officers at the scene were familiar with firearms, they had not studied this issue.
"2.5 seconds, it takes 2.5 seconds for an excellent sniper to do all this." Su Yan looked at everyone and said slowly, "We assume that the murderer is more powerful than the strongest sniper today, but the minimum time cannot be less than 1.5 seconds. In addition to the time it took for him to pass through the glass, it cannot be less than two seconds."
Everyone thought for a moment and nodded in agreement with Su Yan's calculation.
2 seconds is already the limit of a person's movement, and it's still theoretical. It's hard to say whether anyone can achieve it.
"Xiao Su, two seconds to kill is enough." Shen Liqing said from the side.
"Yes, two seconds is enough." Everyone agreed.
Su Yan nodded: "Two seconds is indeed enough, but do you know how long it takes for the smile on a person's face to quickly disappear due to shock?"
"hiss"
When everyone heard this, they couldn't help but take a breath.
Only then did they understand why Su Yan wanted to confirm this. Although no one knew how long it would take for the smile to disappear quickly, they thought it would not take more than two seconds.
Since the smile on the deceased's face has not faded, it means that the murderer cannot be hiding behind the partition because the time does not match.
"So it can be ruled out that the murderer was the victim of the assassination?" Zhao Yang took a deep breath and asked.
Su Yan nodded: "This possibility is basically ruled out."
"hiss"
Everyone gasped again.
Su Yan's confirmation seems very simple, but it is impossible to refute!
"The murderer did not hide behind the partition to commit the murder, and there is no other hiding place in the living room, so there is only one possibility. The murderer is familiar with the deceased!"
Shen Liqing reached the final conclusion through Su Yan's judgment.
Forensic Doctor Ren and the others were speechless at this time, and they all nodded in agreement.
"Since it was an acquaintance of the deceased who committed the crime, this case will be easier to investigate." Zhao Yang couldn't help but said happily.
Even if there are many acquaintances of the deceased, it is better than finding a needle in a haystack, and the scope of investigation will be reduced countless times, which naturally makes Zhao Yang overjoyed.
Su Yan smiled slightly and said: "The scope of suspects can be narrowed down."
At this time, everyone at the scene was full of admiration for Su Yan, and they were all surprised when they heard that he could narrow down the scope of suspects.
"How to narrow the scope?" Even Shen Liqing couldn't bear it this time and asked hurriedly.
Su Yan said slowly: "The deceased kept smiling when someone pointed a gun between his eyebrows. Who can do this? As far as I know, the deceased was a serious person. Even his son Wei Anxiong probably couldn't do it. To this point.”
Shen Liqing and others nodded slightly, agreeing with Su Yan's analysis.
"That's strange. Since his son can't do this, who can?" Forensic Doctor Ren scratched his scalp and said in complete confusion.
"Someone can do it!" Su Yan said with great certainty.
"Who?" Everyone asked in unison.
"Child, if he is a child, he can do this!" Su Yan raised his eyebrows and replied in a deep voice.
"Child?" When forensic doctor Ren and others heard this, they looked at Su Yan in confusion, as if they were looking at a monster.
Su Yan nodded and said slowly: "That's right, kid. It's not that there were no other people in the Wei family at that time, but there was a child!"
