Chi Wan sat beside Xie Yutang, Xie Yutang habitually poured a glass of water for Chi Wan and said to her, "You must be thirsty after working for so long, drink some water." ”

Chi Wan took the water and sniffed it, frowned instantly, threw the teacup on the ground and said, "Don't drink this water!" Poisonous! ”

Xie Yutang had just sat down, and was so frightened by Chi Wan's words that he jumped up like a spring, and the teacup in his hand was thrown out, falling to the ground and falling apart.

"Why don't you drink this water?" Xie Yutang asked.

Chi Wan sniffed the water in the teapot carefully again to make sure she was not mistaken, and then said, "Where did you get this water from?" ”

"It should have been picked up from a stream of water in Heijo."

"All the water in this Pingcheng water flow is no longer drinkable, they are all poisoned!"

Chi Wan's words surprised Xie Yutang very much, and said, "Poisoned? This water seems to be no different from any other water, so how can it be poisonous? ”

Chi Wan took out a herb from her pocket that Xie Yutang had never seen, and then took out the kettle she had brought with her. She poured the water into the cup and put the herb into her own water, and the herb did not change.

She put the herbs in the teacup again, and saw that the young leaves, which had been green a second ago, suddenly withered and yellowed, and the rhizomes also curled up.

"In fact, this water is the root cause of those people's illness," Chi Wan explained, "Water is the source of life, everyone has to drink water every day, this water is poisoned, and the poison spreads silently in the human body, and people and gods get sick without knowing it." ”

Xie Yutang suddenly realized: "No wonder those doctors are wearing isolation clothes, and they still get sick even without contact with those who are sick, so that's the case." ”

"And it's not an epidemic, it's not the same as it is described."

Ji Wan thought back to her modern times, when she was not proficient in medical science, but she still knew some basic common sense. Plagues, also known as pandemics, are characterized by being extremely contagious and are infectious diseases caused by some strongly pathogenic microorganisms, such as bacteria and viruses.

And the plague will not happen for no reason, it is generally produced after a natural disaster, because of poor environmental sanitation, which breeds that kind of microorganisms.

However, the serious disease in Heicheng did not coincide with the characteristics of the plague, first, there were no natural disasters, and second, the contagiousness was not strong.

Chi Wan had personally observed that the person who was responsible for going out to the yard to inquire outside every day had never had any disease on his body after going back and forth several times.

This made Ji Wan feel strange, but in the end, she finally found out the problem, why the people in the courtyard were not sick, but the people outside were seriously ill.

The reason is that there is a well in the yard, and everyone is afraid to go out because they are afraid of getting sick on weekdays, so they drink well water all the time. Well water is clean groundwater and naturally not toxic.

The people of Pingcheng outside have always carried water from the river to drink, and Chi Wan has also personally visited the river, which looks clean and clear. But it was so clean that there wasn't even a single fish or shrimp, like stagnant water.

Chi Wan told Xie Yutang all of her recent discoveries, Xie Yutang thought about it carefully, frowned and felt that something was wrong, and asked: "According to what you say, although the river in Pingcheng is dirty now, the well water is still drinkable?" ”

"That's right." Ji Wan nodded and said.

Xie Yutang took Chi Wan to the backyard of the inn, where there was a well, he pulled up a bucket of water for Chi Wan to identify, Chi Wan sniffed it but also shook her head, and said, "The water in this well has also been poisoned." ”

"No wonder ......," Xie Yutang said, "because the river water that can be picked up is limited, the doctors and I generally use the river water, and the officers and soldiers use the well water that has been idle for a long time." According to your words, my officers and soldiers should not be sick, but almost all of them have been ...... lately."

"I'm afraid there are moles here." Chi Wan's eyes were sharp, "This well water must have been poisoned by someone." ”

"But it's easy to find out who poisoned the person, as long as it's the only one of you who isn't sick, it's the poisoner, because he knows that the water is poisonous and won't drink the water here."

Xie Yutang nodded and shouted, "Someone!" ”

"The minister is here!" The guards who had been following Xie Yutang responded with a peaceful voice.

"Go and get everyone to meet outside the inn and make sure everyone arrives!"

"Yes, General!"

However, after a while, the open space in front of the inn was full of people, whether it was a doctor, a maid, or an officer or soldier, thousands of people gathered to wait for Xie Yutang's order.

The guards reported to Xie Yutang that everyone had arrived, and Xie Yutang shouted: "Everyone, the men will take off their shirts, and the women will roll up their sleeves!" ”

Although everyone didn't understand Xie Yutang's intention for letting them do this, they still did it. The men showed their strong chests and well-defined abs to show off their strength. The only fly in the ointment is the large red spots on the skin, which are shocking.

The women's arms are also very slender, but many people's arms are already unbearable, the original fine skin and tender flesh, but now swollen here and there, uncomfortable tight but unable to scratch, it is really torturous.

Xie Yutang went to check in rows, almost no one was spared, although those doctors drank the antidote, but the traces on their bodies had not faded, but they had only decreased.

Until he arrived in front of that person, Xie Yutang's deputy envoy, his body was white and flawless, without any red spots, and he looked out of place in the group. Xie Yutang stared at him, he didn't dare to face Xie Yutang with his eyes at all.

Suddenly, Xie Yutang made a move, he pinched the other party's shoulder, and the pair made a subconscious punch to counterattack Xie Yutang, and hit Xie Yutang straight on the chest.

Everyone was shocked, although he was a deputy envoy, and his position was second only to Xie Yutang, but after all, his position was still not as high as Xie Yutang, so logically speaking, Xie Yutang wanted to punish him, but he couldn't fight back, otherwise he would be guilty of the following crimes!

His punch repelled Xie Yutang a few steps, and then he subconsciously wanted to escape, but you must know that everyone else here is loyal, they blocked his way, surrounded him, and left him with no way out.

Just when the envoy was flustered, Xie Yutang had already pinched the back of his neck and shouted: "Take it for me!" ”

More than a dozen shirtless officers and soldiers around him rushed up to completely suppress the envoy, and tied him up with a rope in three or two strokes.

"General, why are we arresting him?" Some people asked, puzzled.

"Look at yourselves, and me, we all have this disease, why is he the only one who doesn't?" Xie Yutang explained, "Because he poisoned the water we drank, he wanted all of us to die in this peaceful city!" ”

Everyone was shocked, and suddenly looked at the envoy's eyes, but the envoy was still not afraid, staring at Xie Yutang with vicious eyes and said: "Yes, there is always one person who dares to act, that is, I put poison in the water you drink, and I also arranged for them to pick poisonous river water for you to drink every day!" ”

Some people still don't know what happened, Xie Yutang repeated Chi Wan's words, and they suddenly realized like Xie Yutang just now, it turned out to be like this, it was really unexpected.

Xie Yutang asked, "Come on, who is the person behind the scenes?" ”

"I don't know, I've never seen the man's face clearly." The deputy envoy was also telling the truth, Xie Yutang was puzzled and asked: "You call the other party without knowing the identity and still helping him?" ”

"He was the one who threatened me, and one night he came into my room and told me that the reason for the illness in Heijo was because he had poisoned the river. ”

"Then he gave me a packet of powder, told me to sprinkle it in the well water in the backyard, told me where there was a clean water source, and threatened me that if I didn't do it, he would kill me."

The deputy envoy's words showed that he had to do this, but this was not the reason why Xie Yutang could spare him. Xie Yutang waved his hand: "Lock him up, don't let him die, and then punish him when he returns to the capital." ”

"Yes." When they had received the order, they took the traitor to the woodhouse and imprisoned him.

After going back, he relayed everything that had just happened to Chi Wan, and said, "The deputy envoy said that the person would go to the river to poison him, but there is still no way to know his identity. ”

"If you want to know who he is, you just have to go to the end of the water source and squat." Ji Wan analyzed, "There are three streams of water in Heiseong, but the end of these three streams is the same place. ”

She pointed to a towering mountain outside the window and said, "That's it, the waterfall on that mountain, it's the end." ”

"But that mountain is very dangerous, if you lose your life for poisoning, no one will do this kind of stupid thing, so if that person wants to poison, it will naturally be there, at the foot of the mountain."

"But in this way, as the river keeps flowing, the poison will soon be washed away by the current, and the poison will be washed out of Pingcheng. Therefore, if he wants the people of Pingcheng to drink poisonous water all the time, he must go to the water source regularly to poison it to ensure that the toxicity does not dissipate. ”

Xie Yutang nodded and said, "Okay, let's immediately send someone to arrest the person who poisoned him, and we must see who is behind it!" ”

"Hmm." Ji Wan said, "I'm going with you." ”

"No, this matter is too dangerous, you are a girl's family, so don't go."

Chi Wan shook her head and said, "Such an abominable person, I must see who it is that would do such a thing to the people of Pingcheng." ”