White cat eyebrow tip to draw, immediately some embarrassed to get up.

Did she feed too much? It's not going to die.

Before the beaver finished thinking about it, the mouse stopped twitching.

The white beaver, with a black thread on his head, squatted down and stabbed the mouse with a branch. Seeing that it was not only dead, but also stiff.

Mo Beichen looked at the empty package of white powder and frowned slightly.

"It's really poisonous." Yan Hongtian's face was startled, and then he doubted, "but why didn't they die before?"

Didn't she feed them the powder yesterday? It seems that I have been fed a lot. How come I didn't die yesterday, but I died so miserably today.

White cat pick eyebrows, holding a white sand on the ground, "should have something to do with water."

"Water?" Yan Hongtian's brows are tight and his face is not clear.

White beaver stood up and explained, "you think, yesterday I gave them dry food, they didn't die, but now I just put the powder in the water for them to eat, and they died. What does that mean?"

Yan Hongtian blinked in a muddleheaded way. He didn't understand Bai Li's meaning at all.

Bai Li turned her mouth and deeply felt that Yan Hongtian was not as smart as Huba. If she was facing Huba now, Huba would surely understand her words.

White beaver had to explain more clearly, "it means that this thing will be toxic when it melts into water."

"Water!" White beaver said, his eyes light a bright, suddenly stare big eyes, "I understand."

"Somebody." The white beaver yelled.

A few soldiers came in quickly outside the house, "what do you want from the fairy?"

The white beaver looked at them eagerly and said, "you several go to the long river outside the city, the inner lake in the city, the short ditch in front of the door, and the well in the backyard to take a bucket of water."

Several people looked at each other and did not know why. But seeing Bai Li in such a hurry, they did not dare to neglect him. They immediately answered and went to fetch water.

Yan Hongtian didn't understand what Bai Li wanted to do, but he didn't dare to ask more questions when looking at Bai Li's anxious appearance. He just stood aside in silence.

Soon, the men who took water in front of the door and in the backyard came back.

Looking at the two buckets of water, Bai Li frowned and said, "one scoops one scoop and burns it on the fire rack outside."

"Yes." They answered and went out with the bucket.

White beaver also followed out, watching two people boil water.

Yan Hongtian and Mo Beichen also went out together.

Soon, the soldiers who came to fetch water in and out of the city also came back. The white beaver let them scoop a ladle and burn them dry.

Soon the results came out. There was nothing left after the well water in the backyard and the water in the short ditch at the front door dried up.

After the water from the river outside the city was dried, there were a lot of white powder. It was the same as the powder that the white beaver fed to the mice before. It was all in the shape of sand. And the water from the inner lake in the city was dried, and there was white powder, but only one third of that in the water outside the city.

Bai Li frowned and turned to look at Yan Hong's way of heaven. "Is the inner lake in the city connected with the outside of the city?"

Yan Hongtian nodded, "yes. Many of the inner lakes in the city are connected with the moat outside the city. "

The white beaver was indifferent, so the water in the inner lake was poisoned, but there was no poison in the short ditches and wells that were not connected with the outside.

At last, Yan Hongtian, who was slow, finally understood, "someone poisoned the water outside the city."

White beaver laughingly looked at him, hook up the corner of the lip way, "you finally understand."

Yan Hongtian's face turned red. He scratched his head with embarrassment. Then he said angrily, "is it the poison sent by the Lord of the holy heaven old city?"

The white beaver nodded and said, "it must be him. I wrote to you to guard against it. So they couldn't find a chance to poison the inner lake. They could only go down to the moat outside the city."

Bai Li said and frowned with guilt, "but blue pool is not so lucky. Those people should be poisoned outside and inside the city, so they will be so serious."

It was her fault, and she should have reminded him that there would be fewer deaths.

Yan Hongtian bowed down with a moving face and said, "the fairy is very kind. I have to repay Yan Hongtian for being a cow and a horse in my life."

He was very glad that he believed her. During that time, he had been taking strict precautions. Although he was still successful by them, he also saved nearly half of the people in the city.

He really can't believe that if he didn't believe her, what kind of scene would Chishui City be now.

Bai Li looked at Yan Hongtian and sighed, "OK, it's important to save people first."

Yan Hongtian frowned and looked at Bai Li, "does the fairy have a way?"

The white beaver looked at the white particles in his hands and shook his head.

"This kind of poison is colorless and tasteless, but the particles are not poisonous. When it is melted into the water, it becomes very poisonous. Once someone drinks the water, it will catch the disease and spread the disease to others, just like an epidemic. I haven't seen such a poison before. I don't know how to solve it

Yan Hongtian is a little dispirited. She is so skillful that she can't solve the poison. Who can solve it in this world?Baili took a deep breath and said, "well, you should inform the people in the city that they don't want to drink the water outside the city and the water from the inner lake. If you are safe, you can drink well water."

Yan Hongtian patted his head and suddenly said, "I almost forgot. I will go now."

Yan Hongtian said and ran out in a hurry.

The white beaver held the white grain and his frown was loose.

Finally, the source of the disease has been found, and the biggest problem has been solved. Now the disease has been controlled. Even if the epidemic can not be completely eliminated at the moment, there is no need to worry.

Thinking of something, white beaver went to the table, picked up a pen and paper and said, "I have to write two letters."

Mo Beichen pick eyebrows, "write to blue Mingyu."

"Well." Bai Li nodded, raised her eyes and worried, "the situation in blue pool city is more serious than that in Chishui City. LAN Mingyu should be able to control the disease, but in such a short period of time, he should not have known the source of the disease. I wrote to him, so as not to study it again."

She never doubted LAN Mingyu's medical skills. Even if she didn't write a letter, he would be able to find out the source of the disease. However, since she found out the truth, she did not ask him to check it again.

Mo Beichen nodded silently.

Bai Li bit his lip and said, "I have to write a letter to the second master. The second master is knowledgeable and skillful. He should have seen or heard of this poison."

Bai Li said and began to write.

After writing the letter, white beaver put the white powder into two letters.

"Somebody."

Bai Li wrote the letter, called for two soldiers, and handed the two letters to them respectively, "send these two letters to blue pool city and Aeolus college respectively. It must be fast, and it's better to send them tomorrow."

"Yes."

Two people should, dare not have any neglect, quickly went to the blue pool and the holy sky.

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