Xu Zhonglai asked again: "How did he do it?"

Lin Han said: "At that time, Director Chen took advantage of the chaos and told Qin Tianshi that Shadow would find a way to save him, and taught him to use the excuse of smoking to stop Shadow."

Lin Han paused and continued: "Of course, Qin Tianshi did not expect that this 'shadow' was not his angel, but his messenger. The tool for killing was the poisonous cigarette."

Zhou Tong said: "But we all checked the cigarettes at that time and found no problems?" Xu Zhonglai also looked at Lin Han with doubts.

Lin Han said: "Judging from the autopsy report, Qin Tianshi died from a plant extract called digitalis. This extract was not extracted by boiling traditional Chinese medicine, but by chemical means. The murderer must have something."

Hospital or military background.”

"This extract is both a cure and a poison. It mainly depends on the dose and the person who takes it. One thing you may not have noticed is that Qin Tianshi was a patient with severe heart disease, which was also confirmed in the autopsy report

.”

The forensic doctor next to him also nodded in agreement.

Lin Han continued: "The dose of poison placed in cigarettes is not enough to cause death to a person with a healthy heart; for some people who are in particularly good health, there will not even be poisoning."

Lao Cao asked doubtfully: "So Qin Tianshi will die, but the other two smoking policemen are fine?"

Lin Han continued: "After taking this poison, the heart rate will be significantly slowed down or accelerated, depending on the person. Qin Tianshi himself has a serious heart disease, and before he was arrested, he had an affair with two prostitutes.

He had crazy sexual behavior, and was frightened when he was arrested, which caused his heart rate to become abnormal. After he smoked the cigarette poisoned by 'Shadow', his heart rate became extremely abnormal, and he eventually convulsed and died.

.”

"Oh!" Everyone sighed in unison.

Lin Han glanced at Lao Cao and said: "The dose of poison in this cigarette will not cause obvious reactions for normal people, so the two policemen did not feel any discomfort."

Lin Han finally said: "The most important point is that this 'shadow' knows Qin Tianshi very well. Not only is he bold and careful, but he has also received an extremely professional education in modern chemistry. He is definitely not an ordinary person!"

After a brief silence, everyone applauded.

Xu Zhonglai smiled and gave Lin Han a thumbs up and said, "Brother, you are so smart. You can understand these things. It's really amazing."
Chapter completed!