In mid-June, Chang Shan's training officially ended, and the first eyestroke massager accessory product he invented, the micro dust collector, was officially launched to the market.

This miniature vacuum cleaner is only the size of a mung bean. The price is as high as 1,500 yuan per unit.

Ordinary people naturally don't need this kind of thing, so although many netizens have long known that Chang Shan and his research institute invented this kind of thing, the attention is not high.

The attention is not high, but it does not mean that there is no market.

Before Changshan, this kind of miniature dust collector already existed. It's just that the volume is several times larger, but the range of dust removal is several times smaller.

This is something that is only used on a very small and expensive apparatus with cutting-edge and expensive tips.

The market demand is not very large, but the profit is not low.

If the R&D cost is not included, the material, labor and marketing costs add up to less than 100 yuan.

If this mung bean-sized instrument can be successfully promoted to the world with its smaller size and better effect, it will bring hundreds of millions of dollars in profits to Changshan every year. What's more, the micro dust collector can also reduce the cost of each eye fatigue massager by more than 1,000 yuan.

For Changshan, this miniature dust collector is not only a propeller for his research base to maintain rapid development and growth, but also one of the contributors to the large-scale popularization of eye fatigue massager in the future.

……

Late at night, on the main road, three Audis with ordinary license plates were parked on the side of the road.

The doors of the front and rear cars opened, and two sturdy and burly men in their thirties stepped out of the back seats.

The four big men looked at each other like blades, and after quickly scanning around, they came to the cart in the middle.

The doors on both sides opened, and out of the left was a middle-aged man in his forties.

He was slender-headed, wearing a crisp shirt and trousers, and his gaze was unremarkable, and he didn't look anything unusual.

On the right, down is a tall man in his seventies, with white hair and a pair of reading glasses.

A big man stepped forward, took out a coat from the car, and wanted to put it on the old man.

The old man smiled and waved his hand: "Take two steps and take it off, trouble!"

Dahan didn't say anything more, and put his coat back in the car.

"It's better to come out with you, if Xiao Zhang is here, there will definitely be a few words. The old man smiled and waved his hand, and said with some spirit: "Keep up at a normal pace and see if I can keep up." ”

Two big men stepped forward to lead the way, their bodies tense, their steps steady, and their eyes vigilant.

The old man and the middle-aged man walked side by side, and the other two big men followed closely behind.

A group of six people, by the bright moonlight, came all the way to the outside of the horticultural training class.

The old man took out his handkerchief, wiped the sweat from his forehead, and couldn't help sighing: "I'm old, I've only been walking for a few minutes, and I'm a little out of breath." ”

After wiping his reading glasses again, the old man looked up at the somewhat vague signboard, and couldn't help laughing: "This Teacher Li is really good at choosing a name and picking a place." ”

He raised his right hand and waved it slightly.

A big man jumped up abruptly, climbed the fence, and like a wild cat, quietly jumped into the courtyard.

Another big man came to the small door, waited for more than ten seconds, took out a wire from the pocket of his shirt, and poked it into the door lock.

With a click, the door opened easily.

When the five people entered the courtyard, one of them who climbed over the wall first had already appeared on the open platform.

The old man glanced around: "Simple and simple, quiet and elegant, it is a good place in the city!"

He walked to the gazebo with a smile and sat down where Li Feng usually sits.

The silk cloth on the table was lifted, revealing a set of tea sets.

Opening the small teapot next to him, the old man sniffed lightly: "It's a little fragrant, but it's not very strong, this is the top cloud he often drinks?"

"Try it!"

found the teapot, grabbed a large handful and threw it in, the old man looked at some dark black unreadable keys on the tea set, he couldn't continue, he couldn't help but look up at the middle-aged man: "Xiao Liu, will you use this?"

The middle-aged man shook his head.

"I knew you wouldn't, you can't waste ......"

The old man seemed to be very fond of talking to himself, and he babbled on and poured the tea-leaves that had been stained with water into the teapot.

At the end, he stretched out his fingers and pulled out the tea leaves that stuck to the inner wall of the teapot and put them into the teapot.

……

In the room, Li Feng was sleeping soundly, and a pleasant mobile phone rang.

He rolled over.

The ringing continues.

When I grabbed it, the caller ID was actually Ah Fei.

Look at the time again.

Two o'clock in the morning!

After a brief accident, he was startled and bounced violently.

Don't say it's Ah Fei, even if it's Yang Xixi, who is very arrogant, if something big happens, otherwise it would be absolutely impossible to wake him up in the middle of the night.

"Hey!" he quickly answered the phone.

"Teacher, there are six people. Ah Fei said.

"Very powerful?" Li Feng couldn't help frowning, thieves and robbers or something, Ah Fei was afraid that he would have knocked down the bundle a long time ago, and he would talk about it when it was dawn.

"There is one who can't see the depth, and there is an old man inside, which should be very big. Ah Fei explained: "But looking at their actions, there seems to be no malice. ”

"In the middle of the night, the third watch didn't tell you, there was no malice and there were attempts, with the two of us, can we deal with it?" asked Li Feng.

"I'll be enough. Ah Fei said confidently.

"Then go out and ask!"

Li Feng stepped forward, put on a pair of shorts at random, and opened the door.

Next door, Ah Fei opened the door and went out almost at the same time. Unlike Li Feng, who was naked and shorts, he was dressed in a strong suit, and even wore the black coat that he hadn't worn for a long time.

In the pavilion, when the two of them came out, the old man's eyes flashed away.

When Li Feng and Ah Fei approached, he stood up, greeted the pavilion, and stretched out his thick, calloused right hand towards Li Feng.

Li Feng ignored him, his gaze swept over the other four people, and fixed on the seemingly ordinary middle-aged man.

Vaguely, he could feel a dangerous aura from the middle-aged man's body.

The old man didn't think it was a pestle, so he found a stone chair nearby and sat down, patted the stone chair next to him, and said, "Teacher Li, don't worry, we don't have any malicious intent here, come here to sit, it's best to get some wine, let's watch a dragon fight while drinking." Let's see if the king of killers you cultivated is powerful, or the Xiao Liu I cultivated with my own hands. ”

The middle-aged man unbuttoned the shirt on his body, one by one, meticulously.

Ah Fei looked at him silently.

Li Feng smiled, staggered past the middle-aged man, came to the pavilion, and sat down on the stone chair next to the old man.

Leaning forward slightly, his hands on the table.

When the three big men saw that he was in a posture that he could do to the old man at any time, they all frowned and took a step forward.

"Let's go in without telling us, it's normal for Mr. Li to be careful. ”

The old man waved his hand a little displeased, and the three of them hesitated for a moment, but still stepped back.