After Bai Song told Zheng Yanwu this information, he was very happy. If Old Zheng had a thought in mind, he would be able to cheer up.
"Your first step now is to find a place to clean yourself up." Bai Song saw that he was about to speak and interrupted him directly: "If you don't want to go to the hotel, you can go to the bathhouse and change your clothes."
"Okay." Zheng Yanwu nodded heavily, "I'll listen to you on this matter."
"Okay." Bai Song raised the corner of his mouth.
"By the way," Bai Song continued, "You just said that you used to be a host?"
"Well, the chemical factory produced dyes. More than ten years ago, about 10% of the garment factories in the Pearl River Delta used my dyes." When Zheng Yanwu said this, he did not feel nostalgic. He no longer cared about these past events.
This really made Bai Song look at it in a new light. What kind of place is the Pearl River Delta? It is the cradle of China's light industry written in textbooks. The clothing industry in the Pearl River Delta Industrial Zone is a market worth hundreds of billions of yuan, and one-tenth of it is dyes. It is definitely a big factory.
“I didn’t expect you had such a past,” Bai Song said with some admiration.
"It's all over." Zheng Yanwu took out two bowls that looked fairly clean and filled them with stewed meat. "Do you want to eat?"
"Eat," Bai Song took the bowl without hesitation and said, "Old Zheng, you are an expert in chemical engineering. Let me ask you something. Do you know anything about cyanide?"
"Cyanide? It's used in making dyes, but I'm not an engineer, so I don't know much about it. I just know that the anti-toxic standards for that thing are high, and you have to be very careful when using it. The vehicles used for transportation are special vehicles, and the prices are very high. I am quite clear about this." The boss always cares about the price.
"Then how difficult do you think it would be to get some cyanide without going through formal means?"
"Difficulty? That depends on how much you want," Zheng Yanwu said. "I haven't run this business for many years, so I don't know the current situation. In the past, sometimes I couldn't get a quota or approval to buy, so I had to pay a fee to borrow a few cans from my peers. It's indeed a bit difficult because the quantity is too large, but thirty or fifty tons is easier to handle." Zheng Yanwu stuffed a large piece of stewed meat into his mouth, inhaling hissingly due to the heat.
Thirty to fifty tons... Zheng Yanwu's figure instantly grew taller in front of Bai Song.
"Isn't this illegal..." Bai Song suddenly realized that this thing was not a joke.
"Yes, so the price has to be increased." Zheng Yanwu didn't care about what happened more than ten years ago. "I don't know the current situation. The supervision should be much stricter now, but these things are all dismantled by qualified companies. We were mostly fined when we were caught back then. I don't know about the past few years. By the way, why are you asking this?"
"Just curious." Bai Song didn't say anything else.
"Okay, I understand." Zheng Yanwu didn't ask any more questions.
I have to say that the meat stewed by Zheng Yanwu is quite good. Bai Song ate a bowl, reminded him again about photography, and left.
With nothing to do, Bai Song returned to the station and continued to organize the case files of Sun's murder. Only Wang Xu was in the office, and the others were busy with other things.
During this period, there were several new clues in the case of Sun's murder, but the person was still not caught.
People's reactions when they are under stress may be inaccurate. Similarly, sometimes when people are frightened, they are prone to memory problems or self-hypnosis in their minds, automatically imagining things as they imagined. It is for this reason that recently, Wei re-communicated with Sun's neighbors and took another statement.
The case was not long ago, but the neighbor's statement was different from the previous one. Of course, the sooner the statement is taken, the better, but the second statement at this time cannot be said to be unnecessary.
The neighbor's second statement pointed out that before the death of the deceased, the quarrel in the house opposite did not last as long as previously said, but only three or four minutes.
Three or four minutes is actually not short. When you hear a song you don’t like, it is very difficult and unbearable for you to finish listening to it. Sometimes you will feel that time passes very slowly.
After careful psychological counseling and comparison, the neighbor's final answer was that the quarrel in Sun's room only lasted about four or five minutes, but the content of the quarrel was extremely confusing. The neighbor could not even remember a word, and the accent was from another place.
"Is the detailed autopsy report out?" Bai Song asked Wang Xu.
"The copies were just delivered this morning. The originals are with Team Two. You can take a look. I took a rough look and found that they are consistent with what the forensic doctor said before." Wang Xu handed a stack of files to Bai Song.
Bai Song took a deep breath and opened the autopsy report. Although he still felt reluctant when looking at these colorful pictures, he was much calmer now. He carefully read every picture and the contents of the report.
"Why was hydrogen cyanide detected in the respiratory tract?" Bai Song asked in confusion: "Didn't you say it was taken before?"
"Inhalation?" Wang Xu didn't look at it so carefully. He took the case file from Bai Song and took a look at it: "Is it written wrong? Death from inhalation is not realistic, right?"
Although hydrogen cyanide can also cause death through inhalation through the respiratory tract, it is not realistic to use it for poisoning. Sun was a strong man after all. If he had no external injuries, he would have struggled for a few minutes after inhaling hydrogen cyanide. There were no obvious signs of a fight at the scene.
"Oh oh oh, I didn't read it carefully", Bai Song found out later that Sun did die from taking hydrogen cyanide, but a certain concentration of hydrogen cyanide was detected in the respiratory tract.
"So, Sun smelled it before drinking it?" Wang Xu was puzzled. "Doesn't hydrogen cyanide smell like bitter almonds? It must smell terrible. Only a fool would drink it."
"What you said makes sense. Could it be that Mr. Sun has a cold? Can't smell anything?" Bai Song laughed after he said this.
"It's really troublesome. If things continue to develop like this, it won't be long before a special case is set up for this case. The murder case has not been solved for so long, I guess the bureau is getting impatient," Wang Xu analyzed, "Once the heat of the telecommunications fraud case has passed, Team Ma will definitely keep an eye on this case every day."
"The disadvantage in this case is that there is no video recording," Bai Song said. "There is not much video recording in the neighborhood where Sun lives, and across the street is the bungalow where the bomb was found last time. There are blind spots everywhere for surveillance." Bai Song glanced at the map drawn on the whiteboard. He had checked all the roads nearby, but there was no trace of these two people. It was really weird.
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