Many police officers had already evacuated the scene. Bai Song should have been able to rest this morning, so there was nothing for him to do at the unit, so he stayed at the scene. Several leaders of the criminal investigation team saw him and greeted him.
"Brother Sun, are the forensic doctors at the Municipal Criminal Investigation Bureau better than you?" Bai Song asked curiously.
"Well, do you think a forensic pathologist is a doctor or a policeman?" Sun Jie asked.
"You graduated from a medical university, so of course you are a doctor," Bai Song said, "Although you are also police officers, forensic doctors can work in the procuratorate, courts and other departments besides the public security bureau. They are doctors, right?"
"Yes, it's a doctor." Sun Jie nodded: "The profession of doctor is pronounced as 'doctor' in English, and this word, in addition to doctor, also means 'doctor', you know this, right?"
Seeing Bai Song nodded, Sun Jie continued, "Why are doctors in larger hospitals more skilled? In fact, the same is true for forensic medicine. Forensic doctors in larger places see more bizarre cases, so naturally they gain more experience and their skills naturally improve."
"It's true. There's no difference between him and a doctor." Bai Song was standing outside the corridor. He could see Sun's body from his angle. Although observing the body at such a close distance still made Bai Song feel quite stressed, he had made great progress compared to two months ago. He had no problem just staring at it carefully.
"This person's face is a little dark," Bai Song said, "Could he have suffocated to death?"
"Of course!" Sun Jie said in amazement, "You can see this, not bad. What you said is indeed what we have also considered. The deceased Sun had bruises on his face, accompanied by petechial hemorrhages and cyanosis of the eyes. There is indeed a possibility of mechanical asphyxiation. However, in the theory of modern forensic medicine, these symptoms cannot mean that this is asphyxiation, because there are many diseases and other ways of death that also have this situation."
"Disease? If it's a disease, it's unlikely." Bai Song said this, and the isolation belt outside was opened, and three or four policemen walked up from downstairs.
Daguangli Community is an old residential area with three households per elevator and six floors. Sun's residence is on the sixth floor. Sun rents the house for only 600 yuan a month. The landlord was shocked when he heard the news and has been taken away by the on-duty police officer at the station.
There are two neighbors living in Sun's residence. The middle one is now empty. The one who called the police was the one opposite. There was only a middle-aged woman at home, who has also been taken away to take a statement.
Four policemen came up, two of them were criminal police from the branch, one of them was a deputy captain. Bai Song had seen him in the detachment before, but he couldn't remember his name. Another one was Duan Fei, and the remaining two must be the city's forensic doctors.
The forensic doctor in charge was about 40 years old, wearing a pair of very light glasses. Although he was wearing a police uniform, it was spotless and very neat. The four forensic doctors, including Sun Jie, began to wear shoe covers, head covers, gloves and other necessary equipment at the same time and entered the scene together, leaving Bai Song and the deputy captain of the criminal investigation team to watch outside.
Bai Song didn't know what to say, so it was better to keep silent. He still felt uncomfortable looking at the corpse, so he just sat down at the corner between the fifth and sixth floors.
The corridor of the old community has no heating at all, and the windows at the corners of the corridor are also cracked. It is now the "heavy snow" period of the twenty-four solar terms, and it is still very cold in the corridor. If you sit directly on the ground, your butt will be frozen in a short while. Bai Song can only squat in the corridor to rest for a while. It is indeed a bit tiring to always stand.
Squatting in the corridor, Bai Song looked up. From this angle, he could only see the walls and stairs on the roof.
The old-style building has a skylight between the sixth floor and the top floor, but not every unit has it. There are five units in this building. The crime scene is in unit 3, and the access to the roof is from units 2 and 5, so there is no possibility for someone to get to the roof from here.
Bai Song looked at the dilapidated roof. This community was really old. The walls of the corridors were not clean. Even the roof of the sixth floor was black. He didn't know what was on it.
The several forensic doctors might need some time, so Bai Song was not idle either, he went downstairs.
Not sure if it was intuition or just plain obsessive-compulsive disorder, Bai Song wanted to go to the rooftop to have a look. Since there was no passage to the rooftop in this unit, the station had not arranged for patrols there. After going downstairs from unit 3 and leaving the cordon, Bai Song went directly to unit 2. Unit 2 was very quiet, and there was no one in the corridor. After Bai Song reached the sixth floor, he saw the road leading to the rooftop.
This is a passage similar to a wellhead. The way to go up is to step on the steel ladder embedded in the wall. After climbing to the top, open the cover on top and you can reach the roof.
Bai Song also learned on-site investigation in school, and gained some experience from several practices. He easily saw that someone had climbed this steel ladder recently. However, such traces were basically impossible to retrieve. Bai Song looked carefully and started climbing directly. People who have been to old buildings should have an impression that the first bar of this kind of steel ladder is usually more than 1.5 meters above the ground. It is difficult for ordinary people to climb up alone without the help of a stool or ladder, but this is not a problem for Bai Song.
Bai Song was very careful during the process of lifting the roof cover. The cover was a wooden frame covered with iron. It was not very heavy, so Bai Song lifted it up easily.
Looking around secretly, Bai Song saw two people, Captain Ma and Hao Zhenyu.
Seeing that some colleagues had already come up, Bai Song simply opened all the lids and climbed out.
"Captain Ma, Master Hao, you two are here too." Bai Song stepped forward and greeted them.
Ma Zhituan smiled slightly: "Do you also think there is a problem here?"
"Ah? No, I just think we should take a look here." Bai Song said truthfully.
"Yeah, you're a bit as meticulous as an old scout." Master Hao nodded, "Come and take a look here."
Bai Song immediately looked forward in the direction Master Hao pointed.
"Bai Song, I heard that you almost fell from a tall building some time ago?" Hao Zhenyu pointed to the guardrail here.
The rooftop guardrails of old houses are different from those of high-rise buildings. The guardrails here are only 15-20 cm high and are not used to prevent people from falling. They are only used to collect rainwater and discharge it from the drain outlet.
Following Hao Zhenyu's line of sight, Bai Song clearly saw that there were three or four very obvious rope marks on the rooftop of the deceased Sun's household in Unit 3. Master Hao used tools to extract several very fine rope fibers.
"This scene has been handled professionally." Captain Ma looked around in thought.
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