If someone did this on purpose, what was his purpose? Xu Yuntian thought and walked, he went to the surveillance room of the security department, where there was surveillance video of the entire building.

The security department's surveillance room originally had three security guards, but they also drank the water from the security department's surveillance water, and they were also poisoned, so there is no security guard in the monitoring room now.

Xu Yuntian checked the surveillance video of that day. When he played the video disk, he found that the video had been deleted.

After the poisoned person poisoned the water dispenser of the security department, he took advantage of the chaos and smuggled into the surveillance room to delete the video footage of him entering the security department.

"Damn, you thought you wouldn't be able to find you if you deleted the video!" Xu Yuntian said with a sneer on the corner of his mouth.

Xu Yuntian took out the USB flash drive, inserted it into the computer interface, and pressed the keyboard quickly with both hands. He quickly recovered the deleted video clip and saw a man entering the security department.

After pressing the keyboard, the video paused, then enlarged the video and watched the man carefully. Xu Yuntian didn't know the man. From his outfit, he was sure that he was an employee of Dadao Culture Group.

"Which department is this guy from?" Xu Yuntian looked at the man on the video and said.

He immediately left the surveillance room and saw Maggie Zeng in the company lobby. He waved to Maggie Zeng and said, "Maggie, come here!"

When Zeng Meiqi saw Xu Yuntian calling her, she immediately ran towards Xu Yuntian and asked while running: "Xu Yuntian, what's the matter with me?"

"Let you help me see someone." Xu Yuntian took Zeng Meiqi to the surveillance room.

He pointed to the man on the video and said, "Do you know this man?"

Zeng Meiqi looked at the man on the video and recognized him at a glance, "His name is Fan Jiansheng, he is an electrician in our group company." Zeng Meiqi said.

"Fan Jiansheng!" Xu Yuntian thought, thinking about the archives of the Human Resources Department's employees in his mind, and soon found Fan Jiansheng's archives.

Fan Jiansheng recruited the company two months ago. He is 32 years old this year, married, majoring in mechanical and electrical engineering at university...

"Fan Jiansheng is in the electrician class, and I saw him in the hall just now." Zeng Meiqi said.

"He didn't leave the company, right?" Xu Yuntian asked.

"No, I saw him going upstairs, probably back to the electrician class." Zeng Meiqi said.

"Has he gone upstairs?" Xu Yuntian said in surprise. He felt something was wrong because the electrician team was also in the first floor lobby, located on the north side of the lobby.

Just when Xu Yuntian was surprised, a bang suddenly came from outside, and someone shouted: "Someone jumped off the building!"

Xu Yuntian felt something was wrong, so he immediately went out of the monitoring room door, ran to the security department, quickly opened the security department window, and looked outside.

A man was lying on the ground outside. Although he was rushing face down, Xu Yuntian confirmed that the man was Fan Jiansheng from the clothes he was wearing.

"Damn it! It's Fan Jiansheng!" Xu Yuntian exclaimed.

Xu Yuntian climbed over the window and went outside. He ran towards Fan Jiansheng, arrived beside him, reached out to breathe, and found that he had died.

Before the ambulance left, this happened suddenly. The doctor and the nurse immediately came to check on Fan Jiansheng. After hearing Fan Jiansheng's heartbeat, a doctor frowned and said, "He is dead."

Flipped Fan Jiansheng, causing him to lie facing the sky. Xu Yuntian carefully checked what was wrong with Fan Jiansheng. Suddenly he found that Fan Jiansheng's eyelids were black and blue.

The under-eye eyelids were black and blue, which was a sign of poisoning. Xu Yuntian immediately checked Fan Jiansheng's lips and found that his lips were slightly black.

Then Xu Yuntian stood up and looked up at the group company. The window on the fifth floor opened. Fan Jiansheng jumped down from the fifth floor.

"Why did Fan Jiansheng jump off the building and commit suicide? I saw him just now?" Wu Yuxin said in confusion.

"He didn't commit suicide, he was infected with a poison. This poison would make people hallucinate, so he jumped down from the building." Xu Yuntian concluded.

"What! Fan Jiansheng was poisoned! He is honest and does not offend anyone. Who wants to kill him?" Wu Yuxin said in surprise.

Xu Yuntian knew the reason, and Fan Jiansheng was silenced. The man asked Fan Jiansheng to drink poison in advance, and then Fan Jiansheng went to the security department to poison him.

Then the poison broke out on Fan Jiansheng's body and had hallucinations. He jumped off the fifth floor, causing the illusion of his suicide.

"The whole process is planned very carefully, closely linked, without any leakage. Who is the meticulous behind the scenes?" Xu Yuntian said to himself.

Based on the time of the poison attack, Xu Yuntian calculated that Fan Jiansheng drank the poison an hour ago. Who did Fan Jiansheng meet an hour ago?

Xu Yuntian immediately returned to the surveillance room to check the surveillance video one hour ago. He soon saw a woman meeting Fan Jiansheng an hour ago. Now the only clue is this woman.

From the video, the woman is about twenty-five or twenty-six years old. She looks average but has a good figure. She has a D cup upwards and is dressed very revealingly.

The woman stayed in the electrician class for only five minutes before leaving. Fan Jiansheng personally sent her away. Before leaving, the woman shook her eyes at Fan Jiansheng, making Fan Jiansheng unconscious.

Something happened in the electrician class for five minutes. I can't know because there is no camera in the electrician class. However, it can be concluded that the woman must have given birth to poison to Fan Jian in the electrician class.

"Who is this woman?" Xu Yuntian frowned.

Although there was a video of the woman, it was not easy to find out who she was? Where did she live? What was her origin?

It takes a lot of time to investigate with videos. The fastest way is to enter the household registration system to check the woman's name and address soon.

Thinking of this, Xu Yuntian immediately typed the keyboard and prepared to enter the household registration system to query.

Suddenly, Zeng Meiqi appeared at the door of the surveillance room. She saw the woman in the video and exclaimed: "Isn't this Liu Xiaopin!"

Xu Yuntian turned his head and looked at Zeng Meiqi and said, "Maggie, do you know this woman?"

"I know her. She used to be an employee of our group company and resigned a year ago." Zeng Meiqi said.

Xu Yuntian stood up, Liu Xiaopin resigned a year ago. No wonder she did not have her information in the company's employee files, because the information of the employee who had been resigning for more than a year was destroyed.

"Oh! She used to be an employee of the group company. What department did she know Fan Jiansheng?" Xu Yuntian asked hurriedly.

"Liu Xiaopin used to be from the sales department, so she should know Fan Jiansheng. I don't know much about the specific relationship between them." Zeng Meiqi said.

"Then do you know the address of Liu Xiaopin's house?" Xu Yuntian asked.

Zeng Meiqi frowned and thought, "Well, I can't remember the specific address of Liu Xiaopin's family, I only remember that her family lives in Liujia Hutong." Zeng Meiqi said.

"Liujia Hutong, this address is enough!" Xu Yuntiandao.

"What are you doing with Liu Xiaopin? Is she related to today's poisoning incident?" Zeng Meiqi said in surprise.
Chapter completed!