As soon as he read the content of the letter, Xiao Zheng understood eight or nine points, this is the Mo family coming to the door, as long as someone shows their heads, it will be easy to do, Lao Tzu is afraid that you will hide in the dark and make no sound.

When I took out another letter and saw it, I was stunned, only to see that several different graphics were drawn on the three pieces of paper, and a few paragraphs of text were written under the graphics.

After reading it, Xiao Zheng realized that it was originally three arithmetic problems, which in Xiao Zheng's eyes were a simple similar triangle to find the side length and the Pythagorean theorem, and one was to calculate the side length of the fan. These arithmetic problems will be placed in the future generations, that is, problems that junior high school students can solve.

This is a bit interesting, use your family's skills to challenge Lao Tzu? I can't compare to you for killing people and setting fires, Lao Tzu is the ancestor of arithmetic in the Tang Dynasty.

"Ruoyi, transfer troops to strengthen the protection of the hospital and protect Sun Daochang and these gentlemen. Patrols have been strengthened in the city, inspections have been strengthened at the city gates, and suspicious persons have been arrested immediately and then reported."

After arranging things, Xiao Zheng took people out of the hospital, and before returning to the city, he sent someone to paste a few large pieces of paper outside the hospital wall, each paper corresponded to the answer on the letter, and the Pythagorean theorem was written on the paper with three different proofs.

After answering these questions, Xiao Zheng reversed three questions on three sheets of paper: one to calculate the length of the string, one to calculate the curve of the ellipse, and one to calculate the thirteen-digit number of pi.

Looking at his own question, Xiao Zheng pondered for a while, picked up the pen and wrote on the paper: "Hurt my three people, and return your six lives."

Watching the sun sink in the west, Xiao Zheng told Sun Daochang a few more words, and led people to Yangzhou City.

Fifteen miles west of the hospital, in Jiajiazhuang, the village was extremely quiet under the cold moonlight, only the occasional barking of dogs broke the peace of the village, and the windows of a house in the village were dimly lit.

An old man in his fifties in the room knelt in front of the desk, and there were a few pieces of paper on the desk, which were the answers and arithmetic questions that Xiao Zheng had pasted on the wall.

There were seven or eight people around the desk, and after looking at it for a long time, I saw the old man sigh and say, "We thought it was a difficult problem to solve, and this person gave the answer in a moment." And he asked the opposite question, but none of the people present in our door answered, and I still think that arithmetic is the first in the world, and there is a sky outside the sky, shame! ”。

"Uncle Shi, his ability to solve the problems of my sect shows that he has some skills, but he probably can't do the question, what if he lied to us and wrote it blindly?"

"Bastard! This is a battle of sects and faces, do you think they are all as brainy as you do? The old man scolded at the young man.

The young man was scolded so much that he blushed and bowed his head and didn't speak, maybe the old man felt that his words were a little heavy, he looked at the young man and said: "Qingcheng, although you are the leader of the young generation of my faction, you must also remember that there is a way in the Tao, don't indiscriminately hurt the innocent in doing things." What you and Jia San did today is extremely inconsiderate, you can threaten Xiao Zheng in order to save Dong Wu, but you must not start with ordinary people without saying hello, and Sun Simiao Dao Changren is famous all over the world, and he has saved countless people in his life, but you are looking for trouble with him. In addition, Xiao Zheng will solve the problems of my sect as soon as he makes a move today, thinking about all the unique knowledge he bears, we don't have the slightest doubt that he is also the heir of the hidden sect, you have offended two masters in the world today."

"Uncle Shi, in the past, the head of the sect taught us not to think about other people's lives for the benefit of our own family, only when we master the world can we realize the grand wish of the ancestor, you don't have to worry too much, I want to compare with him, see whose means are smart, doesn't he not let go? The surname Xiao Zheng is not a few years older than me, I don't believe that I can't save a few disciples of this sect, and the disciples will retire! ”。

After saying that, he got up and retreated with someone.

Looking at the few people who went out, the old man sitting alone in the room stared at the paper for a long time, and suddenly sighed and said, "Fight for the world? We have worked hard for a thousand years, and how many states and cities have we had? Which time is not a flash in the pan, when you have made up your mind today, and you still want to compete for the world? A Xiao Zheng has already shocked me, how many such masters are there under Li Shimin, Qingcheng, you are still too tender, alas! ”。

After saying that, the room fell dark.

Every two days, Xiao Zheng called all the families of the three deceased to the lobby of Yangzhou Mansion, and after telling the cause of death of the three people, the family members were also very surprised, and they didn't come back to their senses for half a day, and they didn't understand that their own people had never had enmity and grudges with others, how could they suffer from this unwarranted disaster.

Xiao Zheng looked at these people and said, "Everyone, this official mainly wants to ask you this time if you feel anything unusual happening to them when you go to the doctor.

Xiao Zheng asked, and one of these family members saw an old man and said: "My lord, you really remembered something when you asked the villain, I was following my brother to see a doctor, and when I walked out of the hospital gate, I met a woodcutter who carried firewood on his back and chatted with us a few words and said that he was on the way, and asked about my brother's condition and left." When he carried firewood on his back and hung up on my brother, my brother also said that he was stabbed by the tip of his firewood. But everyone is a farmer, and it is not uncommon for a thorn to be pricked by firewood and grass, so he didn't pay much attention to it, and after walking for a long time, the woodcutter chose a fork in the road and left."

"Old man, how did you think of this?"

"Because the old man often chops firewood when he has good legs and feet, we used to chop the firewood sticks neatly, in order to carry more wood. The firewood on his back was uneven, as if it had been put together improvised and tied together, and you only remembered it when you mentioned it."

"Do you remember what that man looked like?".

"The man was tall and thin, with a mole on his left forehead and a mustache on his chin, but he looked very energetic and spoke with a lot of energy," the old man recalled.

A woman next to her also said: "My lord, just now this old man said that the woman also remembered something, I took the child out of the door after seeing the disease, there is also such a person, carrying a bag of cakes in his hand and saying that he had just seen the patient come out, and by the way gave my son a piece of cake, at that time he also touched my son's head, and praised my son for his tiger head and likable, if this murderer is really him, the woman will ......" The woman cried again after speaking.

Someone from another family here also said: "My lord, I seem to have seen such a person after I went back from accompanying my father to see a doctor, he chatted with my father at the door and helped him get into the carriage......

"Immediately find Yan Liben and let these three people quickly draw the appearance of this person from memory," Xiao Zheng said to Xu Jingzong.

After sending off these family members, Xiao Zheng sat in the lobby and said to Xu Jingzong: "I wonder, why did everyone die who had taken anthelmintic medicine, while the others were fine?" ”。

"My lord, it's also possible that these three people just happened to meet this person?" Xu Jingzong thought for a while and said.

"This possibility is not ruled out, and the evildoers are caught first."