Seeing the crossbow arrows flying towards him, Lifei Shouyu subconsciously squatted down to avoid the fatal blow.

"Wow......"

The crossbow bolt hit the wooden pillar of the city gatehouse, causing the wooden pillar to emit a melodious crisp sound.

"There are assassins, there are assassins."

The crossbow arrows shot by Mi Niang immediately aroused the vigilance of the soldiers of the Hengye Army on the city gate tower, and they immediately shouted loudly.

Li Fei Shouyu stood up violently, raised his eyes to look out of the city, but found that Mi Niang's figure had disappeared, which made him feel surprised.

"There is a letter on the arrow, Shouyu personally opened it."

"Give it to me."

Li Fei Shouyu snatched the letter.

After reading the content of the letter, Li Fei Shouyu looked out of the city, and sighed with emotion in his heart, where did Mi Niang have the intention of killing him, she clearly cared about him and asked him to leave Anbian City as soon as possible, so as not to save his life.

But he has decided to follow Li An to defect to Wang Zhonghei, and he is a common man of the Tang Dynasty, how can he watch the Fan army bully his compatriots? He is destined to live up to Mi Niang's kindness.

'If the spies of the Fan army want to poison the water in the well, they must tell Li An immediately. ’

Lifei Shouyu didn't dare to delay, and immediately ran down the city gate tower and ran towards the city.

At this moment, most of the people who fled into the city have already entered the northwest corner of Anbian City, and the remaining few people who are unwilling to vacate the place have all been put in prison by the officials in the city.

Li An was very satisfied with the execution of these officials, and said that he would ask for credit for them in front of Zhang Qiqiu, which made all the officials very happy.

"Li Shaolang, the hundreds of people in this prison are all unwilling to move places, and I have arrested all of them according to your orders."

Li An looked at the people who were arrested and put in prison, most of them were honest farmers, and they didn't look like spies in the Fan Army at all, but spies are generally disguised, so if you want to determine who among these people is a spy, you must carefully examine it.

"Is there a family register in the city?"

Li An believes that as long as they are examined one by one according to the household registration book, they are not afraid that they will not be able to judge the spies.

"Li Shaolang, according to the household registration system of the Tang Dynasty, the household registration book is in triplicate, the household department of the capital has one copy, the state city has another copy, and the county town also has a copy, and Anbian City is only the garrison of the Hengye Army, so naturally there will be no household registration book."

A small official in charge of household registration explained systematically.

When Li An heard this, he felt a little regretful in his heart, but the spies of the Fan army may not know this, so just take a booklet and fool around, maybe it can make the spies of the Fan army exposed.

The prison official brought a stack of pamphlets full of handwriting and placed them neatly in front of Ang Lee.

Li An glanced at several small officials and motioned to the jailers to mention people one by one, and he wanted to examine them personally.

"What's your name, which village, what are your parents' names, how many people are in your family, what is the name of your village?"

Li An held a pamphlet full of handwriting in his left hand, flipped it casually with his right hand, and paid attention to the words and expressions of the people being questioned, and the little official next to him stared directly at the people who were questioned, and scolded them from time to time.

After examining more than a dozen people in a row, but no problems were found, Li An slowly got up, handed over the task of review to the little officials, and left the prison with a few brothers.

"Shouyu, what's so urgent?"

As soon as Li An came out of the prison, he met Li Fei Shouyu who rushed to him.

Li Fei Shouyu took out Mi Niang's handwritten letter, handed it to Li An's hand, and said hurriedly: "Mi Niang said that the spies of the Fan army will poison the well in the city, and if they really succeed, the consequences will be unimaginable." ”

Li An naturally understood the consequences of the poisoning of the well water, and he couldn't help but feel a chill in his heart, he only thought that the spies of the Fan army would assassinate Zhang Qiqiu and attack the east gate, but he didn't think that they would do something poisoned, which showed that the Fan army was far more cunning than he imagined, and there were really many places that needed to be guarded against.

"Poisoned, the Fan army is really insidious enough."

Li Feiyu sighed casually.

Li An smiled and said softly: "Not to mention poisoning, sometimes, the tongue can also kill, thousands of fleeing people gathered together, if the Fan army spies spread rumors and cause riots, it may be more terrible than poisoning." ”

"Okay, so what do we do now?"

Li An returned the letter in his hand to Li Fei Shouyu, and said, "Shouyu, you give this letter to Zhang Qiqiu, and ask him to transfer people to guard the wellhead, and I will lead the brothers to the northwest corner." ”

Li Fei Shouyu nodded lightly and led the two brothers to Zhang Qiqiu's mansion, while Li An led dozens of brothers to the northwest corner of the city.

Li An believed that the Tibetan army was afraid of the retaliation of the main force of the Tang army, so it was eager to fight quickly, quickly grab enough property and then evacuate, so that the Tibetan army spies would definitely be in a hurry to act, and the more urgent they were, the easier it was to show their feet.

"Hurry up, hurry away, there's a plague here, there's a plague."

As soon as Ang Lee and the brothers arrived at the northwest corner, they saw the rioting crowd rushing towards them, and the expressions of these people seemed to be panicked.

"Stop me, what's going on?"

Li An shouted loudly and asked his brothers to intercept the way of the people.

A small official hurriedly explained: "Li Shaolang, there is a plague here, the people have just come, and in just a few hours, many people have contracted the plague, and the death is really terrifying." ”

"What kind of nonsense, what plague can start so quickly, only a few hours, and people die?"

Li An didn't believe that this was a plague, all plagues in the world had a process of attack, and it would lead to people's lives in a few hours, which was simply impossible.

"Li Shaolang, this matter is true, several people are lying there, you can understand it at a glance."

Li An nodded and looked at the little official: "Lead the way." ”

The little official looked reluctant, but Li An was a popular person next to Zhang Qiqiu, so he had to lead the way in front of him.

In a small courtyard, there were five corpses lying side by side, the surface of the corpses was wrapped in a white cloth, which looked terrifying.

Li An walked over, gently lifted the white cloth wrapped in the corpse, and immediately put down the white cloth after just one look, this kind of death was really terrible, the blood spots on his face and the stench of vomit in his mouth made Li An's head nauseous.

Walking into the distance and taking a few breaths, Li An said softly: "What symptoms did these people have before the onset of the disease?" ”

"Li Shaolang, in the morning, they were all fine, but after coming here, it was suddenly like this, and there is no one living here all year round, I am afraid that there are unclean things, and people will get sick as soon as they live in."

The little official's eyes were wide open, and he looked like he was in trouble.

Li An will not believe in these feudal superstitions, but the death of these people is indeed very strange, which makes people feel very panicked, and it is no wonder that the people are fleeing from here, but Li An believes that this is a ghost made by the treacherous army.

"Have you seen it?"

"I've seen it, he said it looked like the plague, and hurried away."

Li An shook his head helplessly: "It's like a plague, the future of this work is worrying!" ”

"Li Shaolang, this servant has a senior brother with very good medical skills, he left in a hurry, it is likely that he went to invite the senior brother."

Li An nodded lightly, frowning and pondering, he felt that the possibility of these people dying of the plague was very small, and the biggest possibility was that they were poisoned by the spies of the Fan army, and thus died of poison, but what kind of poison would make people in this situation? Li Anke doesn't know much about medicine, so naturally he doesn't know.

"Senior brother, look at it, what kind of plague is this?"

It didn't take long for Qi Zuo to come over with a middle-aged Langjun and immediately start the autopsy.

The middle-aged Lang Jun gently lifted the white cloth wrapped in the corpse, carefully examined the head of the deceased, frowned and pondered for a long time, and suddenly showed a smile.

"Senior brother, what did you find?"

The middle-aged Lang Jun pointed to the corpse in front of him and said, "Senior brother, where is this plague, it is clearly poisoned." ”

"Poisoned, what kind of poison is it?"

Li An hurriedly walked over and asked eagerly.

The middle-aged Lang Jun said: "It's fish poison, many years ago I lived in a fishing village by the North Sea for a period of time, I have seen this fish poison, this poison is refined from the internal organs of the deep-sea poisonous fish, it is extremely toxic, after people are poisoned, this situation will appear, I don't understand, I think it's a plague?" ”

"It turned out to be fish poison." Li An suddenly realized, and looked at the middle-aged Lang Jun: "Thank you Lang Zhong, dare to ask the honorable surname?" ”

The middle-aged Lang Jun hugged his fists and said: "Li Shaolang is polite, in Xia Wang Bing, a small Lang Zhong, farewell." With that, he turned and left.

Knowledgeable and skilled people are always so proud, but they never slip around and are not very good at interpersonal communication.

Li An looked at the little official beside him and said softly, "I saw it!" This is not a plague but poisoning, which shows that among these people, there are spies of the Tibetan army, and the order is sent down, so that the common people can supervise each other, and report any suspicious people immediately, and tell the people not to eat the food given by strangers, so as not to be poisonous. ”

The little official nodded lightly and immediately went to prepare.

Looking at these people who were poisoned by fish, Li Anxin gasped, if these fish poisons were in the well water, and the people in the city drank the well water, it was estimated that they would become like this!

As a precaution, Li An asked his brothers to put up a notice warning the people in the city that after digging the well water, they should first give it to the chickens and dogs to drink, and only after the chickens and dogs are okay can they give it to people to drink, so as to avoid poisoning to the greatest extent.

After realizing that the plague was poisonous, the hearts of the fleeing people in the city were calm, and they hated those murderous and unblinking spies, and they all widened their eyes to dig out these demons hidden around them.

Because Li An placed all the fleeing people in the northwest corner of the city, and the matter of fish poison made the people vigilant, this brought a great obstacle to the actions of the Tibetan army's spies, and they were surrounded by surveillance eyes, and they were trapped in the northwest corner, unable to move at all.

And this is bitter Li Tianlong, who was hiding outside the east gate, he received a signal to cancel the operation on the first night, and he didn't receive any signal on the second night.