After writing the challenge book, Ye Qing asked the master to make several metal detectors.

The principle of a metal detector consists of two systems, a magnetic field coil, and a sensor.

When the coil is energized, a magnetic field is generated, and when a metal enters the magnetic field, it causes a change in the magnetic field. The sensor senses a change in the magnetic field and can sound an alarm.

The metal detector is used to detect the pipeline, and the leaf green does not need to be explored along the line as long as it is confirmed that the root pipe leads to the sea.

The remaining products are the derivative technology products of the magnetic generator. The magnetic generator can interfere with the characteristics of the damaged electronic products, and the interference device is specially designed for the surveillance camera.

Wallet-sized jammers, low operating parameters, press the power switch, can interfere with the normal operation of the camera.

If you look at those modern spy films, you will be familiar with the variety of camera interference devices.

In some large movies, a peanut-sized jammer can disturb the normal operation of several cameras.

That is a science fiction movie...

The monitoring equipment is wired, unless the ladder is moved and the jammer is stuck on the line. Otherwise, it is expected that through remote interference, before the energy technology is broken, there is no such thing as a dream.

Then again, there are several sets of security measures for monitoring some key places, such as corner-to-corner shooting, and the circuit and the body use electromagnetic shielding. With the work of the sticky messenger, it is better to take the vise directly and cut the wire.

Or stick gum or use a laser to illuminate the lens.

When the sunset Xishan, the entire Longxitan Bay, was sprinkled with a layer of golden afterglow, Ye Qing drove his old buddy, the Wuling Light that was torn off the advertising paper, the main production plastic in the Western District Large chemical plants of raw materials drove off.

On the van, Ye Qing took sunglasses and a hat, and two giants worked hard in the back seat.

After walking a few miles along the Huanhai Avenue, the car turned into a winding road and walked for another ten minutes. In the foreground of Ye Qing, a factory with various reaction kettles and cooling towers is located in a large field.

————Jinmei Chemical Co., Ltd.!

The company ranks 27th in the list of monster factories, with total assets of more than 600 million.

There are intricate rural cement roads in the fields, and the roads at the factory gates are spacious four-way lanes, with greenery and vegetation.

The factory's wall is very high, and the security guard at the gate is two young men with gaze and a security suit, but with a little gold necklace on their neck.

When I saw Ye Qing’s van parked at the door, the two security guards threw their suspected eyes from time to time.

Hanging the stalls, Ye Qing left the factory gate.

Along the country road, the van travels to the side of the factory.

While driving, Ye Qing kept scanning the wall through the data glasses.

If it is this company, Ye Qing believes that they will install several cameras to monitor the situation near the sewage pipe.

Only the whole factory went around, Ye Qing did not find the traces of the camera on the fence, and found a lot of infrared alarms to prevent climbing.

"Isn't this?" Ye Qing held his chin and turned his eyes on some doubts.

The data glasses suddenly mark a small circle on the side of the ocean tree, and then the circle expands with the scene, and a detailed description is displayed on the side.

[Found 6mm focal length, infrared camera. 】

As the scene in the circle expands, Ye Qing found that on this poplar tree, he hangs an apparently carefully disguised, leaving only inconspicuous lens monitoring.

The cable of the camera has been buried in the trunk. This is to first engrave the groove in the tree. When the cable sticks in, it will not take long for the tree to heal itself and wrap the cable inside.

The branches in front of the lens are clearly trimmed to ensure that the lens can be seen in the field ahead.

Later, Ye Qing found the same camera on another poplar.

Both cameras are aimed at the field, and Ye Qing is not within the capture range of the picture.

Behind the van is just a chemical company, not a spy organization, or a secret research institute. This unreasonable disguise proves that this factory must have ghosts.

When the night fell, Ye Qing parked the van in the distance, and then, according to the tips of the glasses, quietly touched the poplar with the camera.

Pressing the start switch, Ye Qing slammed the jammer on the tree, followed by the second one.

Imitation of the jammer, two giant laborers, immediately with a shield-like metal detector, along the monitoring scope to check the past.

Jinmei Chemical's factory monitoring center.

In addition to the normal factory monitoring screen, there are four monitors in a secret small room.

Two monitors are equipped with no negative pressure pipe network booster equipment, and two monitor sewage pipes buried in the fields.

Nowadays, the two night vision cameras in the outdoor have become the Panda brand black and white TV with no signal. The full screen is full of snowflakes.

There was only one person in the monitoring room and found that the screen was spent. His first reaction was to check the line behind the bypass monitor.

Several line interfaces were fine, he reported the situation to the security guard room at the door, let the security guard go under the two trees, check the camera.

The two security guards were drinking beer, received news, and smashed the flashlight.

Next to the field, two giant laborers have already followed the whistle of the metal detector and walked out for several miles.

The two detectors in their hands are not the land sold on the network, the kind of thing that will be alarmed when they encounter a nail.

The detector showed an abnormal metal reflection at a depth of one meter from the ground. This anomalous reflection line directly points to the direction of the sea in Longxi Beach.

Two security guards who walked with a flashlight and walked a little under the poplar.

Two muscles bulging, exaggerated black shadows, quietly wandered around them.

When they were smothered by a pair of palms like a fan, they covered their mouths and covered their hair like a farmer hoeing grass.

The two security guards screamed fiercely, and the three souls and six scorpions were almost scared to the sky.

They tried their best to look back, but the other's arms were strong like an excavator.

In the fierce struggle, they faintly heard a young voice, saying that they were stripped naked and tied to the tree.

The powerful big hand that grabbed their mouths was released, and they hadn’t come yet. There was a heavy slap in their faces.

"啪~啪~"

After two dull sounds, their faces seemed to be evaporated from the human body, and the skull seemed to blast a cannon, and the golden light was flashing.

When their thoughts returned to the brain, they were already in a large shape and were attached to a one-meter-high trunk.

The two security guards were naked, and they were the ones that were torn apart.

The night is like a dark monster, looking down at the earth quietly.

In the golden eyes, the two security guards captured a pair of exaggerated strong shadows and slowly left like Jungle King Kong.

"Save... life..."

...