Chapter 38

Zhong Kui smiled without saying a word.

"I know there is someone in Nancheng Investment who understands medicine!" Qi Fei said immediately.

Soon, in the interrogation room, where Feng Yi had sat, it was replaced by Li Jian, that Dr. Li who looked harmless to humans and animals.

His eyes looked somewhat innocent, and he looked at Qi Fei sitting opposite him in a panic, asking in a low voice: "Who did you say died?"

"Pan Ting, don't you know him?" Qi Fei showed Pan Ting's photo to Li Jian.

Li Jian nodded ignorantly: "Oh, this person is Pan Ting, I know." Although he admitted to knowing Pan Ting, he still looked like he wasn't familiar with him.

Qi Fei looked at the doctor in front of him, that sincere-looking appearance. If he wasn't truly innocent, he must be a ruthless character whose acting skills were scary. He stared at the other party's fair face and continued: "According to the current investigation, someone replaced the liver protection tablets he took daily with deadly poison. He died of poisoning."

"Poisoning? Which medicine did he take?" Li Jian blurted out, his professional curiosity aroused.

"You don't know?" Qi Fei looked at Li Jian with a questioning gaze.

"I... how would I know?"

"We learned that you originally had a chance to be promoted this year, but because you also signed off on the joint audit of Pan Ting's project, the audit is investigating you, so you lost the opportunity. You hated him for ruining your future, so you used your medical knowledge to kill him," Qi Fei said.

Hearing this inference, Li Jian hurriedly waved his hands: "This is absolutely impossible! Regarding this joint audit, I had already explained it clearly to the audit team. It was a routine matter. From the perspective of my department, there was indeed no problem with his project. You have to produce evidence to say I killed someone. I don't even know what poison he was poisoned with!"

Qi Fei listened and threw the drug report to him: "Does it look familiar?"

The moment Li Jian saw the drug composition, he suddenly fell silent.

His lips moved twice, wanting to speak but stopping.

"This is not something easily bought on the market, and ordinary people wouldn't know such specific components. The dosage to poison Pan Ting was measured in milligrams. Without a bit of professional knowledge, you really can't do this. Tell me, where were you last Friday and what did you do?" Qi Fei continued to ask.

However, Li Jian looked at the drug report as if he were possessed, completely ignoring Qi Fei's words.

"Li Jian?" Qi Fei raised his volume and called his name.

"What did you say?" Li Jian raised his head as if waking from a dream.

"I asked about your itinerary last Friday."

"I, I can't remember."

"Hm? Can't remember the whole day? People in your department said you were not at work all day on Friday. Where did you go?" Qi Fei's suspicion was constantly increasing.

"I..." Li Jian began to hesitate, "I wasn't feeling well, so I asked for leave to rest at home."

"Can anyone prove it?"

"No, I live alone," Li Jian said, as if he had suddenly reacted, and said, "You have no evidence to prove that I killed Pan Ting. I studied medicine, and I wouldn't do such harmful things."

After several rounds of questioning without results, they could only let Li Jian leave.

Qi Fei knew that Li Jian was right about one thing: they didn't have sufficient evidence to prove he was the murderer.

"He is hiding something from you," Zhong Kui said as soon as she saw Qi Fei.

"You don't need to tell me, I also discovered it. The moment he saw the drug composition, his expression was clearly wrong," Qi Fei said. "We asked, Pan Ting also had a social engagement on Thursday night. The restaurant waiter confirmed that he also took liver protection tablets before drinking on Thursday night, and a table of people drank until the second half of the night. So no matter who swapped the medicine, it must have been in the early hours of Friday. It seems we need to investigate Li Jian's movements that day properly."

At this time, Wu Shanqiu ran over from a distance.

Seeing the two chatting intently, she deliberately put on a puzzled look: "Hey, Brother Fei, aren't you in a hurry to check the report? Why are you chatting?"

"Mind your own business, we are chatting about the case. Is there any new situation?" Qi Fei looked at the report in Wu Shanqiu's hand and asked.

"There is a new discovery in the hair of Niu Yinzhu found at the scene of Pan Ting's death."

Qi Fei took the report and frowned, clearly not understanding the content on it.

Xiao Tao followed Wu Shanqiu over unhurriedly and interpreted it in time: "Intestinal exfoliated cells, trace amounts of bacterial decomposition metabolites, straw fibers..."

"Speak human language!" Qi Fei was always speechless at Xiao Tao's pedantry.

Xiao Tao pushed his glasses unhurriedly: "It means that fecal components were detected in Niu Yinzhu's hair."

"Feces? Human or animal?" Qi Fei immediately chased and asked, "Or Niu Yinzhu's own?"

Zhong Kui was more concerned about the meaning behind these words and asked Xiao Tao: "You said there was an important discovery. If it was Niu Yinzhu's feces, it wouldn't be strange. It looks like the owner of this feces is someone else, right?"

Xiao Tao didn't know why, but seeing Zhong Kui, he had a kind of tacit understanding, and smiled at her: "Correct answer. I tried to extract a part of the DNA, and it was successful. However, what I obtained was not just one person's DNA."

"Hm?" The three people present made surprised sounds at the same time.

"Specific analysis is still being done. So far, five people have been found. In other words, at least five people's feces are mixed with Niu Yinzhu's blood."

Wu Shanqiu shook her head: "Too cruel, I dare not think about what kind of humiliation Niu Yinzhu suffered. Could it be a group crime?"

Qi Fei listened, thoughtful, and then nodded to himself, "Is it reasonable to say so?"

"Brother Fei, what are you saying is reasonable?" Wu Shanqiu asked curiously from the side.

"It's about the location where Niu Yinzhu finally went missing," Qi Fei said, taking out the timeline he had recently circled and drawn from his pocket. "Let's assume, assume the other party committed the crime alone. The time this person impersonated Niu Yinzhu's identity to send a message to Pan Ting, this location is one hour away from Nancheng. If he wants to deal with Niu Yinzhu, he has to run to this place to send a message to confuse the public. If it is a collective crime, it is reasonable."

"You are wrong," Zhong Kui interrupted Qi Fei, "You forgot two very important factors. One is that Niu Yinzhu is already dead, and the second is that the other party disposed of the corpse, making you unable to find her. Killing and eliminating evidence requires time but also requires keeping secrets. Collective crime is more likely to leave more clues. Three years of time without a leak, and now you suddenly find so much DNA. Do you think it is reasonable?"

Zhong Kui stunned the two people.

"What you said... it's as if you have killed someone," Qi Fei muttered.