The arrows continued to appear on the retina, indicating the direction in which the two men were headed.

The two of them continued to descend along the passage, at least ten meters down, passed through the negative first floor, the negative second floor, and went down to the negative third floor....... According to Fang Linyan's speculation, it should be at a deep position at the bottom of the lake, and then it turned into a horizontal passage.

Both sides of the passage are all offices, and at this time there is chaos inside, similar to the situation on the outside, and it seems that there is some kind of emergency.

Fang Linyan walked to the end of the passage and found that a transparent porthole had suddenly opened here, and he could see the outside, but it seemed that there was still a height of about three meters from the water here? This seemed to be a little inconsistent with Fang Linyan's conjecture.

Next to the porthole, there is a separate office, and it is worth mentioning that the door in this office is closed, not like the rest of the rooms have wide open doors.

Fang Linyan pushed it a few times with his hand, but he didn't move, but instead pushed the wood on the façade open.

He noticed that this thing looked like a Mediterranean-style solid wood composite door, but in fact, it could be seen from the cracks and cracks inside, and there was a metal inner layer inside.

If Fang Linyan didn't guess wrong, when the crisis broke out, some people chose to flee in panic, while others chose to stick to and wait for help, and this should be the stronghold that was chosen by people to wait for help.

The goat couldn't help but urge at this time:

"Let's move on, and complete the task first. ”

Fang Linyan shook his head and said:

"It's a strange place, and based on what I've gathered now, there are so many conflicts. If I didn't figure it out, I wouldn't have gone into the water. ”

Goat Road:

"Huh, go into the water?"

Fang Linyan shrugged and said:

"Can't you see that this hidden main quest has been leading us here, and finally it is going to take us to the deepest part of this underground lake, where there is the skull on the map that represents extreme danger?"

The goat gasped, but there was a loud bang in his ears, and it was the elite mechanical warrant officer who slammed his fist on the office door, but the thing still didn't move.

At the same time, the red warning light next to it also flashed brightly, and not only that, but somewhere in this complex, where it should have been a guardhouse, must have been ringing alarm bells.

However, these advanced security systems have lost their effectiveness.

Fang Linyan stepped forward, looked at the place where the elite mechanical warrant officer smashed his fist, shook his head and said:

"It's really sturdy....... However, we may be able to think differently. ”

Goat's Wonder:

"How?"

Fanglin Rock Road:

"My purpose is to enter this office, not necessarily through this door, let's go, go upstairs again. ”

After the two of them came to the negative second floor above, Fang Linyan finally stopped in the depths of the negative second floor, and then walked into a seemingly abandoned room next to it, and the goat said with some confusion:

"What is this doing?"

Fanglin Rock Road:

"I had adjusted my stride distance three minutes ago to make sure that the distance I took was the same as that of each step, so that I could roughly measure the distance by memorizing the number of steps as I walked through the hallway. ”

"I had walked a hundred and thirty-seven steps from the office to the corridor stairs on the lower floor, but now I only had to walk a hundred and thirty-seven steps to the second basement floor, which means that we are now directly above the seemingly sturdy office. ”

The goat suddenly said:

"Wow, are you trying to open the door yourself?"

Fanglin Rock Road:

"That's right. ”

After coming here, the elite mechanical warrant officer threw away the debris three times and divided by two, freed up a circle, and then first pulled the trigger on the ground and swept a shuttle (using the standard firearm configured by the company), and then stuffed a grenade into the pit, and pressed a cabinet on it to detonate it directly.

With a muffled sound of "bang", the cabinet shook violently, and then found that the pit on the floor had expanded a lot, and the elite mechanical warrant officer picked up his fist and smashed it with a "knock knock", which was comparable to a hammer demolition.

It didn't take long for a large hole to be punched into the ceiling of the airtight office below, and the three of them jumped down together.

After entering this office, I immediately found that it was quite spacious, about three to four times the size of an ordinary office, and it could be seen from the boss chair and the large solid wood desk in the center that this must be a room for high-ranking bosses.

Inside, in addition to a large office and meeting room, there is a lounge with a bed and a bathroom with a bathtub.

On the bed in the lounge, Fang Linyan found two corpses, a man and a woman, who had turned them into white bones in seven years, and the most strange thing was that the cause of their death was exactly the same as the dried corpse found above.

The fatal wound was on the top of the head, and the shape was flattened, like that of a swordsman, Edgeworth, stabbing directly into the top of his head from top to bottom.

Then Fang Linyan turned on the computer on his desk, and found that this thing actually needed a boot password or something, but fortunately, at this time, the elite mechanical warrant officer actually played a role, telling Fang Linyan that he had a way to use this primitive electronic defense method.

Then, it directly removed the protective skin on its fingers, and stuffed its fingertips into the USP connection of the computer, and soon the contents of the computer looked like they had been stripped of their clothes...... The plastic model appeared defenselessly in front of Fang Linyan.

Fang Linyan began to read the information in it quickly, and then his brows suddenly furrowed.

Originally, this was an underwater dock, and most of the structure of the entire building was directly sunk under the bottom of the lake, and the three special submarines that carried out exploration operations on the bottom of the lake were directly driven in and out here.

As for why he went to such great lengths, Fang Linyan found the answer through another document requesting maintenance.

Isn't it already said before, every once in a while, there will be a mysterious and powerful pulse wave, under this interference wave, the communication will be extremely disturbed, and even some electronic components on the plane will fail, directly leading to a crash.

The bottom of this mysterious underground lake is the source of this disturbance wave! It can be said that its power is several times that of the outside world.

In order to avoid the dangers of this wave of infection, the electronic equipment used throughout Veronica's lab is custom-made, so not only does it cost a lot of extra money, but the equipment also looks rather clumsy.

At that time, although the blood umbrella company was involved in a wide range, there was no in-depth research on the niche industry of submersibles, so it was difficult to carry out targeted transformation of the special electronic equipment inside the submersible.

So after some research, the surface of the three submersibles inside the underground dock was sprayed with a very unique coating, which can effectively prevent the destructive force of interference waves, so that the special electronic equipment inside the submersible can operate smoothly.

However, there are pros and cons to everything, this unique coating will be rapidly oxidized in the air, once exposed to the air for more than an hour, its effect will be directly reduced by 50%, more than three hours, it will directly fail.

This paint is extremely expensive...... That's fine, the blood umbrella company is not bad for money.

However, the output of this thing is extremely low, and it is not something that can be obtained with money! Therefore, in desperation, the Blood Umbrella Company can only find another way to get such an underwater dock out.

Keeping the operation and maintenance of the submersible underwater, although it is troublesome, is also a helpless move, and can also ensure that the underwater exploration can be carried out smoothly all the time.

But now the problem came, Fang Linyan stood in front of the transparent porthole of the underwater dock at this time, and found that the lake level at this time was actually lowered a lot, and the underwater dock had become a water dock.

You must know that when the Blood Umbrella Company mobilized the people to build this underwater dock, it must have been carefully inspected to ensure that even in the dry season, the underwater dock will not be exposed to the surface.

And there is a clear record in the hydrological data that Fang Linyan just saw, after expert investigation, this lake has existed for almost 2,000 years, during which from the analysis of the sediments on the shore of the water line, its depth has remained relatively stable, and there is no difference between the dry period and the rich water period.

However, in the short period of seven years after the disaster, the underwater dock with a depth of 15 meters has become an underwater dock, which is really a bit unbelievable, and there is a huge secret hidden in it.

After learning these things, Fang Lin already had a rough outline in his heart, and there were two very important pieces of information recorded in this computer.

That is, among the three submersibles that can be used, the one that has the longest service life and looks the most dilapidated looks the best to use, because it has the most mechanical structures in it, so it is the most reliable when diving underwater.

The other two submersibles appear to be more advanced and protected by strange paints, but the electronics still have to be replaced every two or three months.

Another piece of news is that these three submersibles have been specially modified, because of the need for frequent painting and other operations, so only the diving function is limited, and a special key is required to unlock, and the unlocked backup key and use manual are placed in the aviation station.

After Fang Linyan and the goat left this room, they continued to walk in the direction pointed by the arrow, and then came to the bottom of the underwater dock, and found that there were indeed two submersibles moored here....... The arrows on the retina point at them.