The three colors of black, red and yellow are clearly distributed into three rings on the map, like ripples spreading in circles.

And the center of the ripples is where black dots gather.

"Many people died in Nanhu Lane..." Sister Mei couldn't help but sigh.

Lu Weiwei looked at the map and was puzzled: "It's so strange, why is it here?"

"It's true that the experimental base is located in the south of the village, but from the map, Nanhu Lane is located to the west of the village." Chen Yan said, "Water pollution has been eliminated, and soil pollution is impossible. If there is a problem with this soil, others will have had an accident long ago, and the testing agency will also find the problem. Now only air infection and biological contact infection are left."

Sister Mei blinked and asked him, "What does it mean?"

"Let me give an example." Chen Yan pointed to the location of the experimental base on the map, swung upwards, and stopped to the west of the village. "Is it possible that a mouse carrying a pathogen ran out of the experimental base and accidentally entered the village, causing a large number of villagers to get infected."

The deer frowned slightly, "If it was an experimental mouse or a rabbit, the infection route should be irregular and tortuous, and it should not be radiating around with a point as the center."

Chen Yan nodded slightly: "Then now there is only one possibility left, air infection."

"What's going on with air infection?" Sister Mei asked.

"It's better to use a guinea pig as an example." Chen Yan explained, "A guinea pig carrying a pathogen ran out of the experimental base and died in this place after entering the village-"

He once again pointed to the black area, "The dead rat's corpse was not processed in time, and the virus spreads around with the air, causing what we are seeing now."

"How long did it take to drive when we came from the experimental base?" Sister Mei looked at the two of them and did not agree with Chen Yan's guess. "It's seven or eight minutes? If this distance is walking, it will take at least two hours to keep walking, let alone a mouse without a clear direction?"

"It seems that my analogy is not appropriate." Chen Yan shrugged indifferently, "There is still a large forest outside the experimental base. This is not the city. Weasels, owls, and rural free-range cats will threaten the mice. Faced with so many natural enemies and such a long distance, it is indeed unlikely to run into the village."

Lu Weiwei listened to their discussion and was also full of doubts, "Don't forget that the mice used in the experiment have always lived in a sterile environment, kept breeding in a constant temperature, and their survival ability in the wild is almost zero."

Sister Mei smiled helplessly, "I don't understand. According to this analysis, there is only one possibility. Someone in the experimental base deliberately brought the sick mouse into the village."

Lu Weiwei's expression moved slightly and looked at Sister Mei: "It may also be... someone in the village took the mouse away from the experimental base?"

Chen Yan sighed: "You two, don't go to the mice. The ones carrying the poison in the experimental base may not be mice, but other things, and anything that has a transmission nature is suspected."

"That's right." Lu Wei smiled, "Let's go to Nanhu Lane to see the situation."

The three of them put away their things and got out of the car, and walked towards the target.

The closer you get to the black area, the quieter the surrounding environment and the weirder the atmosphere.

I clearly saw the houses one by one, but there was no one in sight for a long time.

Sister Mei looked at the houses on both sides of the road and murmured: "It seems that no one lives in it."
Chapter completed!