To Zheng Kai's surprise, there are very few workers in the production factory, most of them are replaced by machines, and only a small part of the manual testing and inferior screening is required.

Such a large factory is almost fully automated. Soon, Zheng Kai and Su Qing saw the general person in charge of the factory.

"Who are you?" The person in charge was a shrewd-looking man, a little thin, not tall, and a little dark, apparently often exposed to the sun.

The receptionist stepped forward and muttered a few words in a low voice, and the man's eyes gradually became clear: "The two are policemen?" Hello, I am the general manager of the first production factory of Zhiwang Technology, you can call me Lu Dafu. Su Qing took out a photo of the tranquilizer from his pocket and handed it over: "This type of tranquilizer is produced in your factory." ”

"Yes." Lu Dafu only glanced at it and responded. Hearing this answer, Su Qingdang even said that he wanted to check the factory's orders.

Each tranquilizer has a fixed number, and the number is in the two-dimensional code at the bottom of the pressing head, only need to use the internal identification two-dimensional code instrument of Zhiwang Technology to identify, you can know the production batch, production date, and who the inspector is of the tranquilizer.

Under the leadership of Lu Dafu, Zheng Kai and Su Qing came to a room in the factory, there were some computer equipment in the room, Lu Dafu randomly typed a few times on the computer, and all the orders of the factory in the past year appeared on the screen.

"The drugs we produce are rarely sold directly to individuals, and are generally sent to distributors, such as hospitals, pharmacies, etc., to sell them on their behalf, and there is basically no situation where only one syringe is sold at a time." Lu Dafu explained.

Although Zheng Kai and Su Qing have not been exposed to this knowledge, they still understand the general knowledge. Lu Dafu was right.

The factories are all mass-produced. And what is produced is rarely sold directly to individuals. In particular, this factory is for the production of medicines.

It is impossible for drugs to be sold directly by the manufacturer, because the safety of the customer's body must be considered.

Through the order inquiry and the QR code on the needle, Su Qing was able to determine that the tranquilizer used by Watson was a batch of drugs produced earlier in this factory, that is, what Zheng Kai said, the old drug was labeled.

Externally, these can be advertised as new tranquilizers. But in fact, the ingredients in it are not much different from the previous tranquilizers.

Anyway, customers use tranquilizers and don't delve into these issues. Moreover, the people who use tranquilizers are generally not used at home, but by professionals.

The new two words are just to make patients feel more at ease and ask for a little more treatment fee. Subsequently, Su Qing took out the photos of the tranquilizers used by Yue Fang and compared them.

The tranquilizer used by Yue Fang was also a drug produced in a very early batch, and in terms of batch, Watson and Yue Fang used the same batch of tranquilizer.

This is a very clear clue. Although Watson did commit suicide, Yue Fang's death was full of suspicions.

In particular, who is the man on the foot of the slope who appeared at the police station? Why did it disappear out of thin air?

In order to find out Yue Fang's death, Su Qing needed to grasp these details and slowly grope down. At this moment, Lu Dafu's mobile phone rang, and after connecting the phone, Zheng Kai only saw Lu Dafu's expression flustered, then hung up the phone and said hurriedly: "Look at it slowly, you two, I have something to leave, come back immediately." After speaking, Lu Dafu didn't care about Zheng Kai and Su Qing, and directly pushed the door and left.

Zheng Kai's eyes flashed slightly. Su Qing didn't think much about it, and searched for where that batch of medicine was delivered on the computer.

After a while, Su Qing finally found out.

"The inspector who produced this batch of drugs was a man named Zeng Qiang, but I looked at the list of incumbents at the factory, and this person had already left. In addition, the tranquilizers used by Watson and Yue Fang were all produced in the same batch, and after the production inspection, they were all sent to the same place. ”

"Where?" Zheng Kai asked. Su Qing looked at the folder in Zheng Kai's hand. Zheng Kai suddenly understood.

"All sent to this mental hospital?" Su Qing nodded. Zheng Kai looked at the computer screen and did not find the address of the psychiatric hospital on the details page of the order.

Orders are made in-house. The factory did not send them to the psychiatric hospital, but the psychiatric hospital sent someone to take the drugs away, which is why there was no address to the psychiatric hospital on the order.

Zheng Kai took out the information in the folder again, compared it repeatedly, and found that there was a column of free provision of drugs in the funding plan of Zhiwang Technology that year, that is, the psychiatric hospital took this batch of tranquilizers from the factory without spending a penny.

The tranquilizers produced in those years are still in stock. Zheng Kai's expression was very solemn. Su Qing also thought about the seriousness of the problem.

From the documents, it can be known that Zhiwang Technology funded the psychiatric hospital for three years, and after three years, when the project was canceled, the psychiatric hospital was announced to be abandoned and no longer accepted new psychiatric patients.

Since the man at the foot of the slope was able to send tranquilizers to Yue Fang, it means that this man knew where the tranquilizers were produced back then, and maybe even this man was one of the patients in the mental hospital back then.

Thinking of this, Su Qing felt that Yue Fang's death was becoming more and more difficult. Maybe something bigger will lead to later!

At the moment, the crux of the matter is: where was the psychiatric hospital back then? Figuring out the location of this psychiatric hospital is the only way to find the man at the foot of the slope.

"Let's get out of here first." Su Qing wanted to go back to the police station and convene a meeting with his colleagues to discuss. Zheng Kai has no opinion.

Zheng Kai walked to the door, twisted the doorknob, and his expression changed instantly: "I can't unscrew it." "Zheng Kai's strength is definitely not small.

Especially after such a long period of exercise, Zheng Kai's arm strength is much larger than normal, even so, he twisted the doorknob with all his strength, but there was still no reaction at all.

Su Qing asked Zheng Kai to stand aside, and she tried it. Su Qing took a deep breath, and the muscles on his slender arm instantly bulged, and Zheng Kai's eyelids jumped, and what was hidden under the fine skin and tender flesh were muscles that could kill people!

Click~ The doorknob is broken. But the door still didn't open. The doors of the factory are all custom-made solid steel doors, and in order to prevent things from being lost, there is no way to force any door open without a key.

Bang! Su Qing kicked on the door. The steel door only dented a small pit. You must know that if Su Qing's kick was on someone, he might die on the spot.

"We're stuck." Su Qing was helpless. At this moment, the shouts of the workers rang out outside: "It's on fire, the factory is on fire!" The sound faded away and faded away.

Only Zheng Kai and Su Qing with ugly faces were left.