After Lu Feng carefully searched the entire venue, the only place where they had contact with the outside world was the central air conditioning and oxygen delivery pipes.

Due to the installation of both, the ceiling is covered with pipes, which are large enough to accommodate one person.

Yuexing is in the cold winter period, and the central air conditioning and oxygen delivery pipelines of every household are operating 24 hours a day.

"Dark three, the list of items that the participants brought into the venue that day."

"Your Highness."

On the one hand, the business conference is a friendly exchange of development forms in the coming year, and on the other hand, it is a presentation of the company's products.

Lu Feng looked up from the bottom up, this list is compiled according to the strength of the company, and it is necessary to steal beams and change pillars, and small companies are even less conspicuous.

All participants could not detect the signs of poisoning, indicating that these neurotoxins are colorless, odorless, small in size, and easy to enter the human body.

In the end, he zeroed in on three small companies that produced star ore toner.

The toner is dark in color and has a strong taste, and the neurotoxin is doped in the star ore toner, and the toner is covered in the top layer during the test, which can be successfully evaded.

It is only necessary to take the opportunity to transfer the underlying neurotoxins during the sub-packaging and display, and finally disperse these neurotoxins into the air through central air conditioning or oxygen delivery pipelines.

Of course, all this is just speculation, and evidence is needed that can support the complete logical chain.

Lu Feng and the others first checked the surveillance video of the day, focusing on the distance from the venue to the central control room.

In the evening, the goods were displayed, and the lights of the whole venue were particularly bright, and people came and went, and Lu Feng had to spend their eyes on it.

After several cycles, no one paid attention to those star ore toners, and the boss of the company took root in the pile of people all night.

When Lu Feng cycled for the fifth time, he noticed that one of the waiters was acting very suspiciously.

At first, it was normal, all the star ore toner was safely in the box after being packed, and no one touched it.

The waiter's performance is also normal, and he is conscientiously serving the guests.

But when the exhibition was halfway through, Lu Feng found that under the cover of everyone, he took advantage of the fact that everyone was paying attention to the speakers on the stage, and stole a box of star ore toner.

If I'm not mistaken, he's still an orc with a talent for speed and star energy.

continued to track his movements, only to find that after stealing a box of star ore toner, he didn't stop, and some of the exhibits of several companies were exchanged by him.

Most crucially, he had not been to the central control room, nor had he opened the box of Star Ore Toner.

Lu Feng and the others had the mentality that they would rather be wrong than let go of any clues, and found out the information of this waiter as quickly as possible.

He is a regular employee of the venue, has been working for five years, but has been in debt for nearly half a year.

At present, he is also in a coma, and when he got a search warrant from the local police station, Lu Feng and they found a large amount of stolen goods directly from the rental house, including the box of star ore toner.

After investigation, it was found that this was the first time he had stolen, and the channels and methods of selling the stolen goods were not sophisticated enough, so he was unable to transfer these high-value items before he fell unconscious.

The final test results, as everyone vaguely guessed in their hearts, star ore toner is indeed non-toxic.

The investigation was completely deadlocked with the test results.

Moon Star: Artificial Escort Satellite 888.

The artificial satellite 888 is located under the name of the dark member of Lu Feng, and his identity is the factory director.

On the satellite is a machinery factory that makes aircraft and daily utensils, and the employees in the factory are retired veterans who have been on the battlefield in the shadows and have been disabled or physically unable to meet the standards due to injuries.

Chen Su first visited the factory on the satellite and inspected the finished product.

As soon as she got off the plane, she was startled by the battle in front of her, and the 20-meter-long red carpet was spread on the ground and extended to the factory gate.

On both sides of the red carpet stood smiling, high-chested employees, and Director Wang, who stood at the front and smiled at her, with a rather plump physique.

"Miss Chen, on behalf of all the staff of the Fafa factory, I would like to welcome you."

Before she could answer, she saw him turn around, his hands raised, and command the staff on both sides, "Ready, get up." ”

"Welcome Miss Chen to our factory, we will make you feel at home."

Chen Su unconsciously hugged his arm, thinking that before leaving, Song Cheng specially called her for vaccination, about Director Wang's enthusiasm.

I was mentally prepared, but I didn't expect to be so enthusiastic.

This amiable director Wang also personally performed a face-changing trick.

Chen Su saw with his own eyes that his round face instantly turned from white to red, and even his neck was red.

"Miss Chen, I... I... I—" Xu was so nervous that he didn't say a complete sentence for a long time.

A thunderous voice sounded in Chen Su's ears, "Our factory director is your fan. ”

She looked at the source of the voice, a young man of no more than twenty-five years old, and then he shouted in a louder voice, "We are all your fans. ”

Everyone nodded together and shouted, "Yes." ”

Chen Su faced these sincere hearts of affection and showed the happiest smile in this time.

She also raised her voice with Star Energy, "Thank you all for your likes." ”

"Okay."

Director Wang took the lead in applauding, allowing Chen Su to really experience the feeling of being surrounded by applause and cheers.

When you enter the factory, you will be equipped with a variety of high-tech equipment, and the finished products that are placed in the warehouse are also of the highest quality.

The whole factory is in good order, and it can be seen that the management of Director Wang is in place.

Liu Shan had arrived an hour before Chen Su had finished touring the factory, but he was not allowed to enter the factory, but was only invited to the meeting room of the factory director's office.

For Liu Shan, taking over Chen Su's order this time is secondary, and it is the most important thing to have a good relationship with Director Wang and win long-term orders from the Fafa factory.

When he saw Chen Su and them coming, he hurriedly got up to greet them, first nodded to Chen Su, and then took the initiative to go forward to shake hands with Director Wang.

"Hello, Director Wang. I'm Xiao Liu, Liu Shan. ”

When facing Liu Shan, the majestic aura on Director Wang's body increased, and the whole person's posture was more like a leader.

"Xiao Liu is really young and promising, and now he is the leader of the private express delivery industry."

"Don't dare, don't dare, it's all the lifting of the seniors, how can I be the overlord among the tigers."

"Hahaha, humble."

Chen Su was on the side, honestly being her melon-eating crowd, watching the two of them come and go, greeting each other.

After chatting for hours and half a minute of business, all three of them signed and stamped the paper and electronic contracts in triplicate.

Liu Shan carried this contract, like a big baby, and happily left the satellite first.