Lu Yao and Chu Sheng discovered salicylic acid in the laboratory of Guan Yueliang, and You Ning also brought some personal information about Guan Yueliang. After the investigation by Chu Sheng, the students and the teacher went in together, and there was only one person in the classroom. No one left in the middle. You Ning immediately thought of the topic of the news.
After the autopsy, it was the time of Guan Yueliang’s death. There were three people entering and leaving the experiment building during his autopsy, one of his younger brother, a colleague Liu Yansheng, and a colleague Lin Ai. But after verbal inquiry, he did not ask any valuable news, and he could not confirm who was the murderer. Chu Sheng had to arrange people to investigate the background of these three people, and Lu Yao also took You Ning’s death scene to check.
Lu Yao discovered the substance after the reaction of potassium permanganate and formalin in the large cylinder of the corpse. After the reaction of the two substances, a lot of corrosive gas was generated and entered the nasal cavity, mouth and esophagus of the corpse. At this moment, Lu Yao found that someone appeared outside the window and took Youning to rush to chase. As a result, the shadow fell from the third floor and escaped. The two of them chased from the stairs, but they did not catch anyone. You Ning is going to chase and is blocked by Lu Yao, because Lu Yao does not want to lose such a perfect roommate. You Ning listened to Lu Yao’s praise, and she was very happy. Lu Yao told the autopsy officer and Chu Sheng why the body opened his eyes and opened his mouth. Chu Sheng suspected that the murderer was a medical student, and he hated the dead so much that he trampled on the dead.
Early the next morning, Chu Sheng told Lu Yao about the background investigation of the three suspects. Liu Yansheng turned against him because of Guan Jiliang ’s loss of research results for self-protection, and his younger brother Guan Xuanliang because of his father ’s death. The problem of inheritance distribution also conflicted with his brother, and Guan Yuanliang was still a gambler.
Guan Yuliang died after being caught and did not admit that he had killed, Lu Yao also believed that he did not kill. Because he found arsenic on the rose cake on the desk of the deceased’s laboratory, and he also touched potassium permanganate on the rope of the rose cake, and Guan Yanliang did not print the potassium permanganate on the whole night after washing. The marks on his hands were washed away, so he was not the murderer who knew chemical knowledge well. Therefore, Guan Xuanliang only tried to kill, and did not kill.
The coroner came to report that the needle hole of the medical needle was found on the back neck of the deceased, and that the deceased was stuck in the middle of the brain and died for a while. Lu Yao and Chu Sheng went to school to investigate the use of potassium permanganate and medical needles, and found nothing. Lu Yao found that the person in charge in the laboratory of the small animal used in the medical school was Liu Yansheng. Lu Yao suspected that Liu Yansheng was the murderer, because the person responsible for cleaning the animal house would have a large amount of formalin solution in the hands of potassium permanganate. . But when Chu Sheng and Lu Yao arrived at Liu Yansheng’s house, they found that they had been killed in their bathtubs. Lu Yao loved to find a matchbox and a booklet at the scene. This was a serial murder case. Mr. Bai wants Chu Sheng to solve the case as soon as possible. He wants to become the school’s director and strive to get patents for those commonly used Western medicines.
You Ning wrote the formalin serial murder case in the newspaper. Lu Yao thought that You Ning should not say anything like condemnation. In this way, no one would donate his body. You Ning told Lu Yao that both Guan Yueliang and Liu Yansheng had persuaded their families to donate their bodies. You Ning went to Liu Mo for an investigation and was told that Lu Yao was a playboy and dumped his former girlfriend to drink in Paris.
Lu Yao went to Lin Ai’s house to investigate the case. As a result, Lu Yao found that Lin A as a student did not live in a house but rented a house outside, and the food and clothing were very good. The photo of her mother and daughter two years ago showed that they lived in a dilapidated house. After investigation, Lin Ai’s suspicion was also ruled out. Because the experiments she did need to stay close, and she also showed the results to others.
