Police Detective

　　Bai Song gave Zheng Yanwu the information, and he was very happy. If Old Zheng has a thought, he can always cheer up.

　　 "Your first step now is to find a place to clean up yourself." When Bai Song saw that he was about to talk, he interrupted him directly: "If you don't want to go to the hotel, you can go to the bathhouse and change some clothes or something."

　　 "Okay." Zheng Yanwu nodded heavily, "I will listen to you about this matter."

　　 "Okay." The corner of Bai Song's mouth rose.

　　 "That's right," Bai Song then asked: "You just said that you opened the scene before?"

"Well, chemical factories, which produce dyes. Ten years ago, almost 10% of garment factories in the Pearl River Delta used my dyes." When Zheng Yanwu said this, there was no feeling of nostalgia. These past things, he no longer thinks about it.

　　 This really impresses Bai Song, where is the Pearl River Delta? That is the cradle of China's light industry, which is written in textbooks. The garment industry in the Pearl River Delta Industrial Zone is a market worth hundreds of billions of dollars. With 10% of dyes, it is definitely a big factory.

　　 "I didn't expect you to have this kind of past," Bai Song said with some admiration.

　　 "It's long gone." Zheng Yanwu took out two brushed bowls and looked at them very clean, and filled two bowls of stew: "Can you eat it?"

　　"Eat", Bai Song unceremoniously took a bowl: "Old Zheng, you are good at chemical industry. Ask you something, do you know about cyanide?"

"Cyanide? You can use it as a dye, but I’m not an engineer, so I don’t know much about it. It’s just that the anti-virus standard is high, and you are very careful when you use it. Every time you transport a car, it’s a special vehicle and the price is very high. I know one thing better." The boss always pays attention to the price.

　　 "If you think, if you don't use formal means, how difficult is it to get a little cyanide?"

"Difficulty? It depends on how much you want." Zheng Yanwu said: "Now I haven't been in business for many years. I don't know the current situation. In the past, sometimes I couldn't get the quota and approval for the purchase, so I looked for a partner. Adding money to borrow a few cans is indeed a bit difficult, but thirty to fifty tons is better." Zheng Yanwu stuffed a large piece of stew into his mouth, hissing hot and inhaling.

　　 Thirty to fifty tons... Zheng Yanwu's figure instantly grew taller in front of Bai Song.

　　 "Isn't this illegal..." Bai Song suddenly thought that this thing is not a joke.

"Yeah, so we have to increase the price." Zheng Yanwu didn't care about what happened more than ten years ago. "I don't know the current situation. Now the supervision should be much stricter, but these things are mutual exchanges between qualified companies. Demolition, we were caught at that time and the fines were mostly. I don’t know about it in the past few years. By the way, why are you asking about this?"

　　 "Curious." Bai Song didn't say anything else.

　　 "Well, I understand." Zheng Yanwu did not continue to ask anything.

　　 I have to say that Zheng Yanwu's stewed meat is still good. Bai Song ate a bowl, once again asked him about photography, and left.

　　 There was nothing to do, Bai Song returned to the office and continued to sort out the case file of Sun Mou's murder. Only Wang Xu was in the office, and the other people were busy with other things.

　　 During this period of time, the murder case of Sun has a few new clues, but no one was caught.

People’s responses during stress may be inaccurate. Similarly, sometimes people are frightened, and they are prone to memory problems or self-hypnosis in their minds, and automatically make up some things as they think. It is also because of this. Recently, Wei Suo communicated with the neighbors in Sun's residence again and took a new record.

　　 It’s not a long time since this case, but the neighbor’s record is different from before. Of course, the earlier the transcript is taken, the better, but the second transcript at this time cannot be said to be unnecessary.

　　 The neighbor's second transcript pointed out that before the death of the deceased, the quarrel in the opposite room did not last as long as previously said, in fact it only lasted three or four minutes.

　　 Three or four minutes is actually not too short. When you hear a song that you don’t like to listen to, it is very difficult and difficult for you to finish listening to it. Sometimes you may feel that time passes very slowly.

　　Through careful psychological dredging and comparison, the neighbor's final answer was that in Sun's room, there was only about four or five minutes of arguing, but the content of the quarrel was so confusing that the neighbor could not even remember a word, and the accent was a foreign accent.

　　 "Has the detailed autopsy report come out?" Bai Song asked Wang Xu.

　　 "The original copy sent this morning is on the second team. You can take a look. I took a look at it, and it doesn't differ from what the forensic doctor said before." Wang Xu handed a stack of rolls to Bai Song.

　　 Bai Song took a deep breath and opened the autopsy report. Although Bai Song looked at these colorful pictures, he was still very resistant, but he was much better. He carefully read every photo and report content~www.novelmtl.com~Why was hydrogen cyanide detected in the respiratory tract? "Bai Song asked suspiciously: "Didn't it say that it was taken before? "

　　 "Inhalation?" Wang Xu didn't look at it so carefully. He took the case file in Bai Song's hand and glanced at it: "Is it wrong? Dying by inhalation, isn't it realistic?"

Although hydrogen cyanide can also be inhaled through the respiratory tract and die, it is not unrealistic to use it for poisoning. Sun is a strong man anyway. Without trauma, he can struggle for a few minutes without inhaling hydrogen cyanide , But there were no obvious signs of fighting at the scene.

　　 "Oh oh oh, I didn't look carefully", Bai Song saw it later and discovered that Sun did indeed die from taking hydrogen cyanide liquid, but only a certain concentration of hydrogen cyanide was detected in the respiratory tract.

"That said, before this Sun Mou drank it, he smelled it and then drank it?" Wang Xu was a little puzzled: "Does this hydrogen cyanide smell of bitter almonds? That smells so unpleasant, fool." Will drink it."

　　 "What you said makes sense, or Sun has a cold? You can't smell the nose?" Bai Song said, he was happy.

"It's really troublesome. If we continue to develop like this, it won't take long for this case to be established as a special case. The murder case has not been solved for so long, and it is estimated that the bureau should not be able to sit still." Wang Xu analyzed: " When the telecommunications fraud case is over, Ma Detachment must be watching this case every day."

　　 "In this case, the disadvantage is that there is no video recording," Bai Song said. There is no video in the community where Sun lives. The other side is the bungalow where the bomb was found last time. It is a blind spot for surveillance. "Bai Song glanced at the map drawn on the whiteboard. The roads around here have been checked, but there was no trace of these two people, which is really wicked.