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Most of the vegetation in tropical rainforests are perennial plants.
Although the vegetation destroyed after trenching and wiring can grow quickly, it will not recover to the same extent as the surrounding old vegetation within a few months at least.
If you observe carefully, it is not difficult to find the difference.
And this difference has undoubtedly become a directional guide.
This made Liu Yi no longer need to rush into the depths of the mountain forest. He slowed down and observed the difference in vegetation between the undulations on the mountain surface, and cautiously moved forward.
In the next two kilometers or so, Liu Yi once again marked two hidden monitoring points.
After marking it on the map, I was about to continue walking towards the core location when I heard a faint buzzing sound.
The sudden buzzing sound was too familiar to Liu Yi. It is the wind noise generated by the silent motors and blades of small drones when they are working.
The moment the sound entered his ears, Liu Yi immediately judged the exact location.
Seeing a protruding soil slope on the right side, I turned sideways and turned over in a low posture.
The buzzing in his ears became more and more obvious, and Liu Yi kept adjusting his position.
To ensure that the soil slope in front of him can tightly cover his person, as well as the heat radiation radiating outward all the time.
The buzzing sound quickly flew closer. Judging from the intensity of the working sound, it should be a medium-sized reconnaissance drone flying above the canopy.
As the drone gradually moved away, Liu Yi had moved almost 180 degrees around the slope.
It wasn¡¯t until the buzzing sound completely disappeared that Liu Yi¡¯s tense body completely relaxed.
With a grin on his face, he gently moved his stinging toes in his shoes a few times, then held on to the dirt slope with one hand and tried to stand up.
But what Liu Yi didn¡¯t expect was that the hand he was holding up was empty.
After falling into the dark for a while, I hit something hard, flat, and felt like metal.
To be honest, this moment really shocked him.
After stabilizing my rapidly beating heart, I held the object I touched with one hand and carefully turned on the low-light flashlight with the other hand.
Peeking in along the lush grass, what I touched was a thick iron door about thirty by fifty.
After looking carefully, there was a not too thick layer of dust on the iron door, but there were also cobwebs hanging around it.
But the gray anti-rust paint surface is very new. After wiping it with my hand, the red weak current logo on it is almost the same as the one that was just sprayed on.
After studying the keyhole on the iron door, Liu Yi reached out and took out a set of small tools from his side pocket.
The combination of the probe and the thin steel bar fiddled with each other for a while, turned to the left, and successfully opened the lock cylinder, which was not very secure.
With a little force, I pulled open the iron door wrapped with waterproof tape and looked inside. I found that inside was a semi-underground relay box with some depth.
Use the light of a low-light flashlight to observe carefully.
The first thing you see is a few 75-12 signal lines, which are merged into the fiber optic main line here.
In addition, there is a 2.5 square meter cable that is divided into a bundle of multiple power supply lines.
Since the 75-12 signal line is used, the distribution of surrounding terminal equipment should be within a range of two to three and a half kilometers.
Judging from the itemized wiring harness, the total number of devices should be around fifteen to twenty.
If there is no error in the estimated target position, this is fifteen to twenty pieces of terminal equipment, covering a sector range of about sixty degrees.
It can be deduced from this that there should be six more similar relay boxes. The total number added together is between 90 and 120 monitoring terminals, forming a relatively complete peripheral monitoring system.
¡°Coupled with the drone that just flew over, the overall monitoring intensity is so strong that it goes without saying.
¡° Moreover, this is the most peripheral monitoring method within a range of seven to ten kilometers from the core area.
The further you get closer, the difficulty will only get higher and higher.
For Liu Yi, the biggest problem right now is the jungle combat uniform he is wearing.
It is said to be a "jungle combat uniform", but it actually looks like something bought in an outdoor supplies store.
Although the camouflage print above has a certain ability to deceive the naked eye, the material and printing and dyeing technology cannot detect infrared at all.
What I just encountered was an active infrared device. Because Liu Yi had good eyesight, he avoided it in time.
????????????????????????????????????????OUT, definitely within the reception range of the small compliance antenna.
So, leave with peace of mind.
More than an hour later, Liu Yi quietly returned to the high point where Liu Yuling and Cai Allen were hiding.
Cai Aalun said excitedly for the first time that he had captured the complete data stream of the drone sending and receiving information.
Moreover, solution packages sent from China can be smoothly imported.
When Liu Yi heard the news, his heart suddenly felt at ease.
His ears heard correctly. The drones used by the other party for patrolling and warning were indeed from the same technology range as the ones he had encountered in China before.
For this series of drones, we have mastered all the software and hardware parameters through the previously captured equipment.
In other words, as long as the independent docking password of each aircraft is solved, you can seize control of the drone.
Of course, we will not compete with the enemy for control. However, the sending and receiving data can be intercepted to obtain the drone's view.
If everything goes well, there will be no need for Liu Yi to take huge risks to investigate the core area within five kilometers.
As long as we have enough patience, the enemy's drone will naturally reveal all the information we want to know.
As for calculating the docking code, under the "exhaustive method", it is only a matter of time.
Around four o¡¯clock in the morning, the previously intercepted data was successfully decoded.
Looking at the footage shot by the drone within the reception range of the small composite antenna on the monitor, Liu Yi was full of confidence in the subsequent investigation. (Remember the website address: www.hlnovel.com