Evidence Collection of the Crime.
It's not just about comparing the damage on the leather seat.
The reason being:
By comparing the damage on the seat leather, the fastest way to confirm He Yong's criminal act could be found.
After committing the crime, He Yong was constantly in a state of fear and anxiety, worried that the case would be exposed, so he did not make any deliberate attempts to clean or handle the car.
Su Ming quickly found multiple clues related to the case inside this second-hand car.
First:
There was the seatbelt on the passenger side.
On this somewhat old black seatbelt, Su Ming clearly saw a faint, dried bloodstain, about five centimeters long and half a finger wide.
It could be roughly judged...
This bloodstain came from the victim struggling fiercely during strangulation, causing the fragile capillaries in her neck to rupture, smearing a small amount of blood onto the seatbelt.
Since the amount of bleeding from capillaries is limited, the stain was naturally not very obvious.
Additionally:
A few long strands of female hair were found on the passenger seat, which, through rapid DNA testing by the forensic team, could confirm that both the bloodstain on the seatbelt and the hair on the seat came from the victim.
Finally:
Su Ming retrieved the video from the dashcam.
A dashcam that automatically records footage is, in many cases, an excellent piece of video evidence.
Unfortunately:
The dashcam did not have any footage from the night before last or had been deliberately turned off early by He Yong.
Even though there was no video recording:
The act of deliberately turning off the dashcam, along with the missing footage from that period when the car was damaged, corresponded precisely to the timeframe when Han Mengyao was murdered.
This was enough to prove...
He Yong's murder of Han Mengyao was not a spur-of-the-moment act but was premeditated and planned.
If:
Finding a single piece of evidence could be a coincidence,
Then with so much evidence emerging simultaneously, it could no longer be called a coincidence; it was irrefutable proof!
...
Inside the Huaihai Criminal Investigation Unit.
Three suspects related to this murder and corpse disposal case had already been apprehended.
Of the three, Xu Yiguo and He Lianshan, who had lighter involvement, either confessed and were temporarily detained awaiting trial, or sat in a mediation room waiting for family members to sign and bail them out.
However:
When He Lianshan's wife came,
She didn't just come to bail him out but also brought a divorce agreement hastily prepared by a lawyer.
Meanwhile, He Yong, who was confirmed to be the murderer,
Was brought back and directly escorted to the interrogation room for an immediate session.
After organizing the evidence and leads,
Su Ming and Xu Changsheng, the two officers most familiar with the case, entered the interrogation room.
At that moment:
He Yong, seated and shackled in the interrogation chair, looked disheveled, his hair greasy and unkempt, eyes dull and lifeless.
His legs swung from side to side nervously, and his bound hands twisted and strained slightly, showing his deep anxiety.
Su Ming and Xu Changsheng sat down at the interrogation table opposite him and turned on the nearby recording camera.
Although surveillance was installed in the interrogation room,
Most detective teams still used cameras for close-range recording to prevent unexpected incidents.
At this stage of the case,
Whether He Yong admitted to the murder was not too significant.
Because:
There was already sufficient evidence to prove He Yong's guilt.
Even if he remained stubborn in court, he would not escape justice, but due process still had to be followed.
Xu Changsheng lightly tapped the table, drawing He Yong's attention from his daze, and spoke coldly.
"He Yong."
"I don't want to waste any more time with you. We have all the evidence we need, so stop trying to deny it."
"Confess and you'll receive leniency; resist and you'll face the full consequences."
"If you cooperate now, there might still be a chance for a lighter sentence. Now tell me seriously."
"What time did you meet Han Mengyao the night before last?"
He Yong, pale and weak, slowly looked up at Xu Changsheng, wearing a half-crying, half-defiant expression as he shouted:
"Officer, I really didn't do it."
"I didn't see Han Mengyao at all the night before last; we broke up three months ago, and she even blocked me on WeChat!"
"I only just heard that she was killed!"
Clearly:
Although he was deeply anxious and afraid,
He Yong had no intention of confessing, hoping to muddle through by denying everything, thinking the police didn't have enough evidence.
Xu Changsheng's brows furrowed, and he slammed the table heavily, already losing patience as he scolded:
"He Yong."
"You have a criminal record. Don't you know how investigations work? Still trying to deny and refuse to cooperate?"
"This is your last chance."
"Immediately recount how you lured out Han Mengyao and the full sequence of events leading to her death, and I'll do my best for you!"
This chance Was not recognized by He Yong, who clenched his teeth and continued to deny.
"Officer, I really don't know!"
"Han Mengyao was indeed my ex-girlfriend, but we broke up three months ago and haven't been in contact since. I really don't know what happened!"
"Do I not even have the right to tell the truth? Or do you want me to lie and confess to murder just so you can close the case?"
Xu Changsheng completely lost his patience.
He tapped his fingers lightly on the table, looking at He Yong, who was stubbornly denying everything, and said sternly:
"Now."
"You have lost the opportunity to voluntarily surrender and confess. There is no way for you to receive a reduced sentence in this case."
"Xiao Ming, show him the evidence we collected."
Sitting beside him, Su Ming did not immediately present the evidence but glanced at He Yong a few times, shaking his head as he spoke:
"If I were you."
"After committing such a poorly executed crime, I would never be foolish enough to deny it. It's truly stupid."
"Do you know what your biggest mistakes in this case were?"
At this point,
Su Ming paused for two seconds, then looked at He Yong, who appeared dazed, and mocked him with his extensive experience in crime-solving:
"First."
"Since you had already decided to commit murder, you actually sent a warning text message to the victim beforehand. Were you afraid she wouldn't know or that the police wouldn't find out?"
"Second."
"To avoid the dashcam recording, you turned it off, but only for a few hours—precisely the time you committed the crime. Couldn't you have just removed the dashcam or poured water on it to short-circuit it?"
"Third."
"You chose strangulation as the method of murder but couldn't bring yourself to buy wire or thin cords and instead used the seatbelt in the car? You left the victim's blood on it and didn't clean it in your panic, nor did you notice that the seat was torn?"
"Fourth."
"Forget it. There's no point in continuing. With such a poorly executed crime, you're still denying it. Let's just show you the evidence and stop wasting time."
With those words,
Su Ming picked up several evidence bags and gestured to them with his fingers.
"This is the seatbelt from the passenger seat of your car, with Han Mengyao's dried blood on it. This is the leather found under Han Mengyao's fingernails, which matches the damage on the passenger seat in your car. And this is..."
As Su Ming raised each evidence bag,
He Yong's eyes filled with terror, his face suddenly turned pale, and he bit down hard on his teeth.
Especially...
Thinking back to the detailed process Su Ming had just described and realizing the overlooked crime details, the taut string in He Yong's mind finally snapped.
His emotions crumbled, fear surged within him.
Su Ming's slow explanation was interrupted by a banging sound.
"Bang!"
"Bang!!"
"Bang!!!"
At that moment,
He Yong slammed his head against the interrogation chair, tears streaming down uncontrollably, as he cried out in a hoarse voice:
"It's all her fault, it's all her fault!"
"Who told her to betray me, who told her to sleep with someone else, who told her to leave me!!!"
"So what if she had money? Just because I didn't have money, just because I didn't have money..."