When Yu Fei and the others came to the vicinity of the hospital and saw the situation around the hospital, they immediately felt troubled, because it was obvious that the hospital was surrounded by people from the Bear Country. It looked like there were no people around.

People come and go, but it is obvious that most people are not real people.

Suspicions were also thick inside the hospital, and Yu Fei could feel an atmosphere even more tense than outside.

The reason for this situation should be that there have been too many injured people living here recently, and it is a real mixed bag.

Most of the casualties caused by the bombing carried out by Yu Fei before were probably people from the Bear Country, and a small number were accidentally injured.

Therefore, the patients currently living here may be officers or soldiers of the Bear Country, they may be martial arts masters, or scientists. Of course, there are also spies from various countries and civilians of the Bear Country who were accidentally injured.

The nurses and doctors in the hospital looked nervous. With so many patients suddenly added, it was inevitable that their workload would increase dramatically, and they might also feel the tension.

Because people of all identities in the Bear Country also need this hospital, Yu Fei discovered that this ordinary member actually had additional security personnel. There were people at all major passages and roads, and they were all even holding guns.

He looked at everyone around him with vigilant eyes.

It is too difficult to enter this hospital. First of all, you need a reasonable reason and excuse. Even if you have one, as long as you enter here, no matter what the reason is, you will be suspected, let alone the appearance of Yu Fei and Scar.

If you faked your serious injuries, people would definitely think you were a spy infiltrating.

"How to get in?"

Scar took a quick glance and knew in his mind that there were three to four hundred people surrounding the hospital, both covertly and covertly, and all the routes on the ground that wanted to enter were basically blocked.

"We can't fly either, so we can only think of ways underground."

Yu Fei stared at the hospital and said speechlessly, he didn't expect this to be the case.

"Underground? Sewer? Although I can bear it, we'd better choose a method that's not too disgusting."

Scar frowned after hearing this.

"In your opinion, the only underground things are sewers? Heating, water supply, and power supply all need to go underground!"

Yu Fei rolled his eyes speechlessly. This guy is simply too naive. He must have been brainwashed by movies and TV shows. Movies and TV shows often deliberately ignore other passages, as if the world only has sewers.

"All right!"

After hearing this, Scar immediately realized that he still lacked this kind of experience, and Yu Fei was obviously more experienced.

"Try again. It's best if the people inside can come out. Once the two of us are exposed, the consequences may be more serious than letting them stay here!"

Yu Fei was still unwilling to give in, and tried to contact the other party using the methods given by Chen Dong, including normal mobile phone contact, email contact, and satellite phone.

But after doing this and waiting for a long time with Scar, but still no reply, the two decided to sneak in on their own.

They first bypassed the hospital and found the entrance to the heating pipe further away. While avoiding the sight of pedestrians, they went directly underground and restored the manhole cover above.

It's even colder here in the Bear Country, so heating is actually more necessary in their city, so underground heating pipes extend in all directions.

Although Yu Fei doesn't understand the route here, he can figure it out if he knows the general direction. The people in the Bear Country are not fools and cannot deliberately build a maze. Their streets are not messy, so the underground pipes are also in order.

This pipeline was built a long time ago, and the dust underground is very thick, and when you come down, you can hear underground noise.

There were many rats, and rattling sounds came from all directions.

For Yu Fei and Scar, this was already a good condition. They walked slowly along the heating pipes in the underground passage.

In the underground passage, no one usually comes down, because this place is really not a good place.

The two of them groped towards the hospital according to the general direction. They both made as little noise as possible because they wanted to prevent people from the Bear Country from thinking of this, so some people were waiting underground in such a quiet passage.

Among them, the sound can spread far.

Occasionally, when passing by a place with a manhole cover above, you can hear the sound of vehicles passing by and the sound of people talking.

Yu Fei thought that these sounds were a good thing. They could generate some noise in the underground passages and eliminate the slight movements that he and Scar accidentally made.

After groping forward like this for more than half an hour, Yu Fei estimated that they had arrived near the hospital. The hospital is a unit with many people, so the demand for heating is also large, and the pipes must not be small, so it is not that difficult to judge.

"If you encounter someone, should you deal with it or control it?"

Scar suddenly asked Yu Fei in a low voice.

"If you can control it, control it. If it's really difficult, then kill it, because once someone dies, even if we do it quietly, people will probably find out soon."

Yu Fei thought for a while and said.

"Um!"

Scar nodded, feeling confident about the strength of his attack.

The two of them continued to move forward close to the heating pipes. After all, it was not designed for people to pass through. It was just for the pipes to be erected. There was still a narrow space left, which was barely enough for maintenance personnel, so it was not too spacious.

The two of them walked sideways, holding on to the heating pipe and moving forward slowly. Scar wore night vision goggles, because if they used flashlights to illuminate the situation, they might be exposed in advance. Anyway, they were thinking of all the risks in advance.

Finally, we encountered a complex bifurcation again. On the left and right sides of the main pipeline, there were five or six passages branching off in this section.

From the general direction, the pipe on one side can be eliminated, but there are three channels on the other side leading to the hospital.

Because the maintenance workers had maps, there were no signs here, so it was difficult for Yu Fei and Scar to judge.

So they could only consider eliminating them one by one. Yu Fei chose the middle passage and walked in with Scar. The heating pipes in this passage were the thickest and most likely because there were more places in the hospital that needed heating.

.

After walking forward for a while, Yu Fei couldn't help but twitching when he saw the situation seven or eight meters away.

Because the front was actually welded with railings to avoid the heating pipes, the rest of the space was sealed off with railings.

The welding uses steel bars as thick as a thumb, and the welding is very dense, so it is not easy to destroy it.

Yu Fei walked over and looked at the traces of the welding machine. He felt that he had found the right one. This should be the passage leading to the hospital, because the railing was only welded in the past day or two, and the dust on it had not fallen much.

.

As expected, Mao Xiong Country thought of this possibility and adopted a very simple method, which saved a lot of manpower costs.

If you want to destroy this railing, the common method is to cut it, but cutting will produce huge noise, which will be exposed in seconds.

"It should be right, but how to get there?"

Scar asked with a frown.

"Actually, I just have an idea!"

A smile appeared on Yu Fei's lips.

Yu Fei discovered that sometimes people

It took a little more preparation, but Yu Fei got a kind of special agent equipment in the warehouse of the latest equipment that Scar let him in.

Yu Fei took out a needle-like thing from the Dragon Ball space, with four big words written on it, corrode all things!

This is special agent equipment, and it will be of great use in a special situation, such as Yu Fei and the others at this time.

Yu Fei gently opened the outer package, then turned the knob, and the end was opened.

Then Yu Fei gently aimed the end of the needle tube at a welding port of the steel bar, and pressed a little of the contents inside out from behind.

Then his eyes widened in surprise, because he only squeezed out a white thing about the size of a mung bean. Unexpectedly, he saw the steel being corroded rapidly the next moment, and the welded joint where the two steel bars crossed quickly turned black.

The liquid flowed to the ground.

And there is almost no sound, just a slightly pungent smell.

Scar's eyes widened in surprise. He suddenly thought of using this thing to destroy corpses and eliminate traces. It couldn't be too perfect.

Yu Fei also found that this thing was very useful, so after planning the corrosion points, he thought of using the most economical method to open a gap for them.

Yu Fei also knew that this special equipment must be very useful, because it is said that even the most acidic aqua regia cannot achieve this effect, and it will produce a strong pungent smell, which is not suitable for such things at all.

Just like this, after Yu Fei clicked on eight points, he reached out and took down a piece of grid-shaped steel mesh.

Although they can only drill into the broken space carefully, it is enough, because this saves the most equipment that corrodes all things. This good thing may be needed in the future.

The two people waited for the corrosion to completely end, then carefully drilled through the gap, and then gently placed the corroded piece of steel mesh up. From a distance, it was not easy to spot the gap here.

After passing this roadblock, the two continued to move forward. After walking about a hundred meters, they saw that the main pipeline began to be divided into many smaller interfaces, leading to different directions.

There is a manhole cover above the head that can enter the ground, but Yu Fei feels that if this is leading to the hospital, the manhole cover must be inside the hospital at this moment, and must be under the surveillance of many people. This manhole cover is definitely not a suitable place to go out.

Yu Fei decided to explore several directions. The injured brother is most likely to be in the inpatient department, so he had better choose the right direction and not waste his time in other places.

The two of them moved along the branch pipes. Because the branch pipes inside were getting thinner and thinner, the space inside was getting narrower and narrower. It was not as easy for people to move inside as it was outside.

They could only lie gently on the heating pipe, squirming forward like insects, and finally came to a place that could lead to a certain building. There was another manhole cover on it, because this place connected the interface to the building.

.

Yu Fei climbed up, put his eyes on the very small ventilation holes in the manhole cover, and looked out.

Then I saw one side of a building. Because my line of sight was very narrow, I could barely see the outside of the building. I probably saw separate rooms and the curtains hanging on them, but I couldn't see clearly.

What is the purpose of this building?

The distance they can advance is limited to this, and the rest are small pipes leading to the inside of the building, so what is left are only smaller passages, and it is no longer possible for people to climb in.
Chapter completed!