At first, Shi Lei and Jinshan had similar ideas, and they also thought that this kind of inexplicable disease could be spread in the air.

Only when he saw the group of people in front of him, Shi Lei's idea changed a lot.

If it was really contagious, there would have been all kinds of symptoms in such a large group of people in front of us. But at present, apart from the symptoms caused by lack of food and water, these people hardly have any mouth foaming phenomenon, which may not be caused by infection to a large extent.

After thinking about this, Shi Lei plans to look for the reason in the whole birch town.

See Shi Lei want to do so, Jinshan also can't sit, although know outside to him may be more dangerous, but still want to follow Shi Lei's steps, go out to see the situation outside.

After giving Jinshan a pill that can temporarily ensure that there will be no danger, Shi Lei immediately brought a lot of food and bottled water from outside, which can alleviate the current crisis.

Later, under the leadership of Jinshan, Shi Lei came to the surrounding of Huashu town and looked at the nearby facilities. He didn't see anything suspicious at all.

At this time, Shi Lei suddenly remembers the power of yin and Yang before him. If the power of yin and Yang still exists, he must be very sensitive to the source of this disease. He just needs to follow the hint of the power of yin and Yang.

But now that things are right and people are wrong and the power of yin and Yang is not there, it is very difficult to find the source.

"Doctor Shi, is it hard to find?"

Jinshan looks at Shi Lei, who is frowning tightly at the moment. Knowing that the matter is not so easy to solve, he asks with great concern.

"Before this happened, did you have any strange phenomena? Or, are there any strange people

Birch town is a relatively traditional town. In fact, there are not many places to contact with outsiders in birch town. Basically, it relies on traditional agriculture.

The existence of gas stations is only for the sake of prevention. On weekdays, few people are here, and this is not a tourist attraction, so there will certainly be no outsiders here.

"You mean outsiders?"

Jinshan began to think.

"If you say that, I have a little impression of a family of three, who is said to be driving around the world, but there is no gas on the road. I just add some gas at the gas station and buy some food and drink on the way."

Jinshan said slowly.

"Anything unusual?"

Shi Lei asked quickly.

"There's nothing unusual. It's just that when the car stopped at the gas station, the man got out of the car and said a few words to several of our fellow villagers. Later, he heard that he didn't say anything. That's to say, he asked about the industrial model of our town."

Jinshan tried to recall.

In fact, if it wasn't for Shi Lei's question today, Jinshan would not have thought of this man. After all, although there are not many people coming to the town, they are not isolated from the outside world, and there will still be some passers-by.

Therefore, Jinshan, who doesn't pay much attention to this matter, still has a vague impression of this man. It's just that he can't connect this strange thing happened in the town with that man.

But after hearing these things, Shi Lei thought more and more, and felt that something was wrong. He felt that this man still had a lot to do with birch town.

"So, does your town have surveillance?"

When Shi Lei saw Jinshan, he couldn't remember what was left of the man. After all, he had his own business to do. At that time, he wouldn't stare at the man all the time. No, the residents of several towns who talked with the man had all died of disease.

"Yes, there are. Although we all trust each other these days, there are still a lot of them installed with such advanced technology, but they are only some major road intersections. As for the entrance of some shops, it depends on the initiative of everyone."

"Enough."

Shi Lei doesn't want to waste time.

Now that he has seen the things in Huashu Town, he has to solve them well. However, the things in the capital are still a big stone hanging on Shi Lei's heart, which hasn't been settled for a long time.

Jinshan naturally agrees with Shi Lei, so he immediately takes Shi Lei to the monitoring control room in the town. The information in this room includes the last three months. It's easy to find the man.

After opening these monitoring data, the shocking picture instantly makes Shi Lei feel a thrill.

You know, in the past nearly a month, no one could be seen on the streets of the whole town. Even if someone passed by occasionally, they didn't seem to notice the abnormality here. They yelled around the gas station for a few times and didn't find any traces of people. Then they drove away directly, so they certainly wouldn't find people in the town.

Time goes back. Near the day mentioned by Jinshan, Shi Lei finally saw a car with a foreign license plate near the gas station.

After seeing the man coming down from the car, Jinshan exclaimed in surprise: "yes, yes, that's the man!"

As soon as he heard Jinshan say this, Shi Lei knew he was looking for the right direction, so without saying a word, he locked the time of the day and looked for the trace of the man on the whole monitoring screen.

There was no mistake in what Jinshan said at the beginning. After filling up the gas, the man didn't rush to leave. Instead, he wandered around the whole town and bought some food and drink from time to time.

After talking with those fellow villagers, Shi Lei inadvertently finds the smile outlined by the man's mouth, which seems to be the success of the plan. Then he looks up and looks at the monitoring on his head, with a deeper smile.

Shi Lei feels that things are very strange. When he looks at Jinshan around him, the man seems to have found the existence of the camera, but no matter his expression or attitude, he doesn't seem to pay attention to it.

"Keep looking."

In the following time, men continue to wander around, but Shi Lei is surprised to find that as long as there is a monitoring place, men's actions begin to lose their purpose and become arbitrary.

If it is true, the suspicion of a man will rise greatly. Facing such a person with suspicious whereabouts, even if the time is so consistent, a normal person will realize that there may be a bigger secret in a man.

Finally, the man disappeared in the monitoring for at least an hour, and after the disappearance, the man made a winning gesture towards the monitoring in the middle of the intersection, as if to show off something.