Now there is not one person in ten who has authenticity on the entire Mexican border. Pen "Fun" Pavilion www.biquge.info

This is due to the relentless crackdown by the US border police and the increasing deployment of more and more advanced detection equipment by the United States.

The tunnel here refers to the kind of tunnels that are excavated dozens of meters underground, have a length of several kilometers, and have a complete lighting and ventilation system. It has a regular house or warehouse cover, connects the two towns, the entrances and exits are guarded by henchmen, and there are multiple high-level underground passages with hidden exit measures.

As for the humble stuff of digging a hole more than ten meters long under the wall, using wooden planks and grass to cover it, it is not an authentic at all, and López prefers to call it a "dog hole".

Last year alone, the U.S. Border Police found more than two dozen dog holes. The way they deal with the dog hole is simple, pull two truckloads of concrete, pump the concrete into the dog hole, and then engrave the date as a souvenir.

The López tunnel, built thirty years ago, is one of the oldest in the city of Salvaro.

This is thanks to López's father, who had an international outlook and was forward-thinking.

His father and five brothers worked together in the United States, and later saw many people trying to smuggle them across the Mexican border into the United States.

When they make money, these people want to go back to Mexico in every possible way and return to their hometown.

This made his father, López, smell a huge business opportunity. He immediately returned to Mexico with the five brothers, and spent several years digging a hidden tunnel to collect exorbitant transportation fees for these people.

The López family started with this tunnel, and today, the exit of this tunnel has changed several times.

"What kind of detection equipment does the United States use?" In the office, Ye Qing asked with great interest, this big Mexican businessman who was a little restrained for some reason.

"It's supposed to be vibration sensors, and since the Americans installed some detection equipment at the border three years ago, if someone digs tunnels on the Mexican side, most of them will be found halfway through the excavation. ”

"By the way, these devices need to drill a deep hole beforehand and bury it in the ground. ”

López spoke, his eyes glued to the beautiful model of the edifice on his desk.

At this moment, he suddenly realized that the magnificent skyscraper across the road was the hand of this young man.

How much does it cost?

"Oh yes~ Those who are found are those long-distance tunnels, dog holes dug under the separation wall, and often have to rely on police patrols to find them. Now my tunnel is carpeted directly on the floor, and I ask them not to make a sound when they walk. ”

López doesn't think it has anything to do with saying this, the young president's products have been embargoed by the United States, and he can have a good impression of the United States?

"It should be an analytical instrument for some fixed vibration frequency, a simple vibration sensor, which will be disturbed by the vibration of large vehicles. ”

Ye Qing nodded, "Actually, it's very easy to crack. ”

"The easiest way to detect vibration is, of course, to detect mechanical vibration. The machinery has an indelible fixed transmission clearance, and the spiral blades also have a fixed frequency for screwing into the soil. ”

"If you dig by hand, dig today, dig tomorrow, and change the tools, the instrument will naturally not be able to detect it. ”

López was stunned, this young president wanted to teach himself badly......

Then he nodded understandingly, but manual digging would definitely not work now. A few years of excavation time, this return on investment period is too long, decades ago, now a few years, there are too many variables.

"As for mechanical excavation, it's even simpler. Ye Qing smiled mysteriously and knocked on the table very casually, "Mechanical vibration cannot be eliminated, but if the machinery does not rely on the motor, or the diesel engine works, there will naturally be no vibration." ”

"You see when I knock on the table, it shakes. If I press on the table, the table is subjected to the same pressure, but it doesn't vibrate. ”

López was already confused.

"In layman's terms, it is to change the way machinery moves. ”

"Our company will launch a new product in two days, but there will be no market for this product. So Mr. López, you want to help us share the sales. ”

López understood. After struggling out of the petrified state, the first thing he did was to run to the desk in ecstasy, holding Ye Qing's hand and shaking it constantly, "Mr. Ye, don't worry, I will definitely help you sell as many products as you want." ”

"Don't get excited, our product is just for urban areas where noise pollution is becoming more and more important, and it is used by the construction team to work quietly during the day. ”

López strongly assured that after he came to Huaxia, he felt a lot when he saw the ever-changing urban architecture, and he was planning to go back to get a construction team to build a residential real estate, which could be regarded as a great help to him.

……

Two days later, Behemoth Heavy Industries launched a new product in a low-key manner.

This new product is not sold to Huaxia at all, and even the company's sales department does not know.

This is a small TBM with a peculiar shape and a semi-circular counterweight metal cover behind the rotary excavator. Once the power is turned on, the counterweight metal cover moves slowly and irregularly in a flat surface to completely divert the vibrations generated by the rotary excavator.

The TBM's head is also peculiar and not a traditional spiral blade. Instead, rows of steel brushes brush the dirt at a uniform speed.

Ye Qing named it [Super Silent Roadheader], and also equipped it with a construction manual detailing how to eliminate all kinds of vibrations.

For example, if you encounter a hard obstacle such as rock, you can destroy the rock structure by burning the rock and then pouring cold water on it. In case of hard soil, you can first wet it with a water hose.

There is no manufacturer, and there is no contact number.

This is the legendary three no products, but the price is one million, which is dozens of times more expensive than the small rotary excavators on the market.

Watching the ten pieces of equipment being transported away by the shipping channel contacted by López, Ye Qing smiled and said nothing.

This small TBM can drill hundreds of meters a day if you brush ordinary soil. Even the dirt that has been brushed down will be passed down the bucket to the back of the machine.

Trying to use vibration sensors to detect such devices is a complete dream.

Because it produces mechanical noise, it is much lower than natural noise in the natural environment.

Everything that can be done for the time being has been done, and as for how much it can penetrate into the United States, it depends on the ability of these Mexican businessmen. The greater their ability, the more points Ye Qing earned.

When you're in a good mood, you naturally want to find something pleasant to do.

After returning from the company, Ye Qing casually sent a WeChat message to Doudou and asked her if she could ask for leave?

If you come, I'll take you to Asashima City for two days.

Well......

Ye Qing is really not easy to say, but Doudou himself also understands.

So after a while, she replied with a shy face. said that she had just gone to ask for it, and the director promised to give her two days off, but she had to record the show in advance.

"Hey, hey. Ye Qing sent a wicked smile to his hand.