PS: I'm really sorry friends, something happened in the store where the poor pure wolf depends, and the recent update may be unstable, please forgive me. ）

Seeing Cao Cao's army flee in a hurry and finally disappear from view, a burst of earth-shattering cheers broke out in Yecheng, and the people of Yecheng who helped Dong Zhuojun beat the war drums in the city smiled and cheered continuously, and Dong Zhuojun, who was squatting on the city tower with a weapon in his hand, also stood up and hugged each other, celebrating their escape from death. The four biggest heroes of the empty city plan, Dong Chong, Ai Jin, Ma Zhuang and Mo Zhu, stood still, especially Dong Chong, who still looked into the distance, his body did not move, and he looked like a general who was not afraid of danger.

"Second master, second master." An excited soldier of Dong Erjun ran up the city wall and shouted to Dong Chong: "Second master, go down and take a look, the people of Yecheng have come to give you pot pulp, and there is your favorite beautiful girl in the middle." Dong Chong was still motionless, and the soldiers of Dong Erjun were strange, so they stretched out their hands and pushed Dong Chong, and shouted again, "Second master." "It's okay not to push, but after pushing, Dong Chong collapsed on the ground, and the ground under his crotch was already wet.

"Fuck you, and help me up with the second master?" Dong Chong scolded the soldier of the Second Army of Dong and said, the soldier of the Second Army of Dong hurriedly used all his strength to help Dong Chong up, and wiped the sweat from his forehead for Dong Chong, at this time, Tian Feng hurriedly walked up to the city tower, hugged his fist to Dong Chong and said: "General Dong, this plan can only be concealed from Cao Cao for a while, it will not take long, Cao Cao will definitely go and return, General Dong, please quickly order the closure of the four gates, continue to arrange defense." Dong Chong nodded, and hurriedly issued an order under the support of the soldiers.

As Tian Feng expected, after Cao Cao's army escaped more than 30 miles, Guo Jia saw that the city was just shouting, and he didn't see the army coming to chase and kill, and he knew that he had fallen into Dong Chong's tricks, so he hurriedly found Cao Cao, who was checking whether his head was missing, and said to Cao Cao: "King, we are waiting for another plan, this is Dong Chong's imitation of the empty city plan set up by Shu Zhan, the general of Zheng Guo in the past, Yecheng is actually empty in the city, our army does not need to be afraid, please ask the king to immediately gather the soldiers, and then go to attack Yecheng." ”

Cao Cao had also read the story in the history books about Zheng Guoshu Zhan deceiving the army of Chu with an empty city plan, and then carefully thought about the scene under Yecheng just now, and couldn't help but be furious, "Dong Chongxiaoer, dare to do this?" Gather the soldiers, and you will kill Dong Er with your own hands! With Cao Cao's order, the general of Cao Cao's army gathered the defeated soldiers again, explained the situation in Yecheng to boost morale, because Cao Cao hated the people of Yecheng for assisting Dong Chong to deceive himself, and added the time of disbanding the military discipline after capturing Yecheng to three days, Cao Cao's soldiers were demoralized again, and the army returned to Yecheng.

When Cao Cao's army rushed to Yecheng again, it was already dark, Dong Zhuojun had already used this time to prepare the defense of Yecheng, and the four gates were closed again, Cao Cao was even more furious, and urgently ordered: "Those who attack Yecheng first will be rewarded!" Under the heavy reward, Cao Cao's army fought bravely together, Xu Yang attacked the east gate, Xiahou Dun attacked the west gate, Zhang He attacked the north gate, Gao Ran attacked the south gate, and covered up on all sides.

"Kill!" On Yecheng, I saw Cao Cao's army shouting and killing the sky, like locusts rushing towards the four gates, and there were many ladders, cloud platforms and siege vehicles, Dong Erjun, who had never fought a hard battle, was like earth, and his hands holding weapons were trembling, Dong Chong's legs were also weak, and he almost peed his pants again, but the performance of the people of Yecheng was slightly better - because Dong Chong, the 'god of war' advocated by Arida Feng, was in the city, which greatly stabilized the people's hearts.

Tian Feng silently calculated the distance of Cao Cao's army to Yecheng, and when Cao Cao's army rushed to the catapult distance, Tian Feng shouted: "Catapult, throw it with all your might." The flag was unfurled, the young and strong people of Yecheng tightened the hemp rope of the catapult, Dong Zhuojun's baggage soldiers put the powder kegs emitting green smoke into the scoop, and the flag was unfurled again, hundreds of catapults threw powder kegs one after another, and the faint green smoke drew countless arcs in the air, sparsely falling on the head of Cao Cao's army, and when the Cao Cao soldiers who knew that the catapult was powerful, they flashed, "Boom!" Bang! The gunpowder keg exploded one after another, and the iron nails or sharp iron pieces contained in the gunpowder keg splashed everywhere, killing and injuring Cao Cao's soldiers in a circle, especially the kind of powder keg that exploded in the air The lethality is the most terrifying, the Cao Cao soldiers in the killing range could not avoid it, screaming and falling in a pool of blood, for a while, the gunsmoke under the city of Yecheng was everywhere, the explosion shook the sky, the Cao Cao soldiers fell in pieces, and the offensive of Cao Cao's army could not help but stagnate.

"Second Master Dong is 100 years old!" Dong Erjun, who had no experience in war, and the people of Yecheng couldn't help but cheer loudly when they succeeded in a blow, missing the precious time to effectively kill the enemy, Cao Cao's army, which had experienced a hundred battles, quickly reacted, quickly dispersed and shouted forward to kill, and the people of Yecheng, who were unfamiliar, could not master the throwing distance of the catapult, and most of the powder kegs thrown out were smashed in the sparse place of Cao Cao's soldiers, and the power was greatly reduced.

"Stop throwing! Crossbowmen ready, free to fire. Seeing that Cao Cao's army had rushed into the range of the bow and crossbow, Tian Feng had to shake his head helplessly and ordered, these people are not familiar with operating weapons, it is understandable, these Dong Erjun will not be able to operate their own town army's treasure catapult, it is unforgivable, looking at their unfamiliar methods, I really don't understand how they won those big battles.

Tian Feng's jaw was still behind, Dong Erjun's bow and crossbow operation level was worse than operating a catapult, the vast majority of Dong Erjun soldiers would not use bows and arrows that were more useful in defending the city, and would only use crossbows that were simple to aim, labor-saving, short range and could not be thrown, and the speed of firing crossbow arrows was extremely slow, basically it took more than ten breaths to launch a crossbow arrow, such a shooting speed was naturally a sparse rain of arrows, which was a drop in the bucket for the surging Cao Cao army. There is hardly any deterrent effect.

"A bunch of trash." Tian Feng scolded secretly in his heart, and said in his heart that he knew that I should persuade Dong Er to arm Yuan Shaojun's captives, at least much stronger than this group of wastes. At this time, Cao Cao's army had already rushed to a distance of less than 100 steps from the city wall, and Tian Feng had no choice but to order: "All wear masks, the people smash big stones and trees, and the soldiers throw poison gas bombs!" After speaking, Tian Feng took out a strip of cloth soaked in water to cover his mouth and nose, the poison gas bomb invented by the unscrupulous military doctor Mo Zhi is still very primitive, and he only needs to cover his mouth and nose with a strip of cloth soaked in water to prevent poison, and it seems that if he wants to enter close combat, it is time for the poison gas bomb to play a major role.

When the first ladder of Cao Cao's army was on the top of the city wall, Cao Cao's army broke out with a burst of earth-shattering cheers - the middle and late stages of this attack were too smooth, and a burst of cheers broke out on the city wall, and the soldiers of Dong Erjun, who were still frightened and in a hurry just now, suddenly came to their senses, skillfully grabbed a poison gas bomb and threw it accurately into the densest formation of Cao Cao's army - almost no waste, the blue-yellow smoke immediately shrouded the poor Cao Cao's army, in addition to poison gas bombs, Dong Erjun was good at sprinkling quicklime, Whenever Cao Cao's army raised his head to climb the ladder, there would always be a few quicklime bottles that accurately smashed their eyes, so that the Cao Cao soldiers screamed and fell down the ladder and rolled all over the ground, trampled to death by their companions, and the poisonous juice made of feces and strychnine, wolf poison and other substances (PS: gold juice in the ancient defense of the city) is also a favorite weapon used by Dong Erjun, every time there are several people in Dong Erjun who are wearing ring armor that are not afraid of bows and arrows, carrying a whole pot of hot poisonous juice, accurately pouring it on the heads of a large number of Cao Cao soldiers, and scalding off the scalp of the poor Cao Cao soldiers, died a miserable death, in a word, what poison sprinkled lime and poured oil, the more indiscriminate tricks, the more Dong Erjun is good at it!

In order to defend their homeland, the people of Yecheng also showed great courage, without armor to defend themselves, they braved the dense rain of arrows, and struggled to climb the city to Cao Cao smashed out of the boulder and the mullet, with the hook to resist overturning the ladder, even if there were Cao Cao soldiers lucky to climb the city wall, the people of Yecheng did not hesitate to pick up arms to surround the Cao Cao soldiers, risking their lives at any time to cut down the Cao Cao soldiers, extremely brave, and under the city behind them, it is innumerable Yecheng women and children, old and weak, in the wood and stones, Provide them with weapons to support the defense of the city, which is the same in the offensive and defensive battles on both sides of the four gates of Yecheng.

Cao Caojun did not expect that the soldiers of Dong Erjun and the people of Yecheng would be so heroic in hand-to-hand combat, and they were afraid of the terrifying poison gas bombs in the hands of Dong Erjun, so they were beaten in a hurry for a while, with heavy casualties, and it was difficult to climb the city wall. At this time, Cao Cao's siege vehicles had rushed to the four gates of Yecheng and began to storm the gates of the city of Wengcheng in front of the four gates of Yecheng, and the four commanders of Cao Cao's army also ordered the archers to concentrate on suppressing the defenders on the gates of the city of Wengcheng to provide cover for the siege vehicles.

The defenders led by Dong Chong were many and unfamiliar, Cao Cao's army was few and fine, Cao Cao's army had to concentrate the main forces on the battle of the four city gates in order to attack the city, the arrows on the head were like flying locusts, shouting on both sides to kill the earth, from time to time there were big stones and rolling logs around him, Cao Cao's siege vehicle nailed to the iron head began to hit the city gate heavily, and Dong Zhuojun seemed to be blinded, forgetting to burn the siege vehicle with the oil and oil in his hand, and sat and watched Cao Cao's siege vehicle crash the urn city gate to the crumbling, the defender Ai Jin on the second gate of Yecheng in the urn city - even hoped that Cao Cao's army would break through the gate of the urn city earlier.

"Bang! Bang! Bang! With the continuous efforts of Cao Cao's army, the urn city gate of the south gate collapsed, Cao Cao's morale was greatly boosted, the general Gao Lan took the lead, and a large number of soldiers shouted into the city, Cao Cao and Guo Jia and others in the rear were also overjoyed, Cao Cao personally patted his horse forward, and wanted to see the destruction of Dong Erjun's city with his own eyes. But what Cao Cao saw was - a war drum sounded in the city, countless torches fell on the urn city at the south gate, and the city immediately ignited a sky-high fire, and the soldiers of Cao Cao's army who rushed into the urn city cried and screamed, and rushed out of the city with their whole bodies on fire, and Gao Lan, the general of Cao Cao's army, because he was poured all over his body by the oil and fire oil in the huge tank on the head of the urn, could never rush out, and disappeared in the flames forever.

"Dong Chong'er!" When Cao Cao saw that a large number of his precious troops were consumed by the fire, he couldn't help but rush into the bullfight, pointed his sword at the city and shouted: "Kill you alone!" And Dong Erjun's treacherous plan succeeded, and the morale of the people and the army was greatly boosted, and they struggled to beat the stunned Cao Cao down the city wall, completely suppressing Cao Cao's army under the city wall.

"Cao Ren, you are alone to replace Gao Ran and continue to attack the city!" Cao Cao roared with a blushing face, Cao Ren agreed, and led a new army to kill forward, and the fire in the urn city gradually decreased, and Cao Cao's army began to push the siege vehicle to rush into the urn city, as long as it broke through the second gate of Weng City, then it could be killed into the outer city of Yecheng, forcing Dong Erjun to abandon the favorable terrain of the outer city wall.

Tian Feng stared nervously at the situation of Cao Cao's army in the urn city, when the fire in the urn city was basically extinguished, and Cao Cao's army poured into the urn city in large numbers, Tian Feng shouted: "Throw poison gas bombs!" "A large number of poison gas bombs packed in bamboo tubes were thrown into the urn city, the urn city was surrounded by walls on all sides, the air circulation was slow, the effect of the poison gas bombs was even more terrifying, countless Cao Cao soldiers ran in the smoke and screamed, bleeding from the mouth and nose and dying of pain, and drove Cao Cao's army out of the urn city again.

Cao Cao's army attacked for more than two hours, not only did not attack Yecheng, but lost the general Gao Ran and many elite soldiers, Cao Cao was so angry that he was smoking, but he was helpless, at this time, Guo Jia caught up, "King, the enemy's poisonous gas is very powerful, but why aren't they afraid of poisonous gas?" It is necessary to examine the corpses of the enemy, perhaps there will be a catch. ”

A word woke up the dreamer, Cao Cao suddenly realized, hurriedly ordered the soldiers to grab a few corpses of the defenders back, the wealthy Dong Second Army all had ring armor to defend themselves, the casualties were not large, but the casualties of the people of Yecheng were not small, Cao Cao's soldiers quickly brought four bodies of the people of Yecheng from under the city wall, Cao Cao and others saw at a glance that three of the corpses were covered with strips of cloth on their mouths and noses, Guo Jia took off the strips of cloth and took a closer look at them with torches, and put them under his nose to smell them, and said to Cao Cao with certainty: "Soaking in water, ordinary clear water." ”

Cao Cao was overjoyed and immediately ordered: "The whole army will suspend the siege, soak each one in water, cover the mouth and nose to prevent poison, and then attack the city." ”

Cao Cao's order was quickly conveyed to the various armies and teams, Cao Cao's army temporarily withdrew from the city, and they were ordered to take water and cloth to prevent poison, but Cao Cao's army immediately found a problem, this cloth is easy to do, just tear off a piece from the military uniform, but this clear water is gone, because of the fear that Dong Erjun will show his good tricks, Cao Cao did not allow the soldiers to allow a mouthful of local water in Yecheng, retreated in a few hours, marched back and forth again and after a fierce battle, Cao Cao's soldiers carried the water had already drunk up, and now most of the soldiers are still smoking in their throats. In a short period of time, where to find clean water that can be used by tens of thousands of Cao Cao's troops to drink and use?

"Tell the king, there are about fifty wells around the periphery of Yecheng, and the generals of Xiahou may ask the king, can they be used?" A herald hurried to pray.

Cao Cao looked at the city of Yecheng suspiciously, Yecheng has such a population, and there are only more than 50 wells outside the city, which is too unreasonable, and the remaining wells, needless to say, must have been poisoned by the expert Dong Erjun I don't know how many kinds of poison have been dropped! Cao Cao thought for a moment and ordered: "Pass the order, no one is allowed to drink water from the well!" Organize soldiers to go to the Weishui River in the north to get water for the army! "Cao Cao said in his heart, no matter how powerful you Dong Chong poisoned, you can't poison the surging Wei water, right? Besides, you deliberately filled some of the wells, which proves that you don't have much poison in your hands.

Soon, Cao Cao's army dispatched 5,000 soldiers to each take buckets and go to the Weishui River, three miles north of Yecheng, to get water, while the other soldiers rested in place to prepare for the next round of siege battles. Dong Erjun and the people of Yecheng also stayed in the city to rest, preparing to welcome a new round of rest for Cao Cao's army, only Dong Chong and Ai Jin sneakily found Tian Feng, gave Tian Feng a thumbs up and said: "Mr. Yuan Hao, we really convinced you, it is really like a god, and it is accurate that Cao Cao's army will not dare to use the water in those unpoisoned wells." ”

Tian Feng's expression was gloomy, and he shook his head and said, "If it weren't for saving the lives of hundreds of thousands of innocent people in Yecheng, I would never want to use this trick." Speaking of this, Tian Feng still couldn't help but ask: "Second General Dong, are the things you brought enough?" The Weishui River is not a small stream or a small ditch, it is a large river with a very rapid flow. ”

Dong Chongyi patted his chest and said proudly: "Mr. Yuan Hao, don't worry, who is my Dong Er?" When you want to go to the battlefield, even if you don't bring your wife, you have to bring enough of those things! ”

……

North of Yecheng, five miles upstream of the Weishui River, hearing the noise and footsteps downstream, a group of sneaky black shadows immediately poured a large number of things that Dong Chong said into the water, dumping them into truckloads, and the rapid current quickly wrapped those lentil-sized, light green, fluffy, horse-like hooves and smashed and crushed lovely plants downstream......

By the way, the scientific name of those things is strychnine, which is a plant that the army likes very much, in the Spring and Autumn Period, the Jin State united the countries to attack Qin, and the Qin army used these cute little things to throw into the Jing River, although only let the princes and coalition lose more than half of the troops, but also let the Qin State defeat the strong with the weak, and defeat the few with the few!

……

"The water is coming!" The 5,000 Cao Cao soldiers who had drunk enough water by the river either lifted or picked up a large amount of river water to Cao Cao's army, and the Cao Cao soldiers were so thirsty that their throats smoked, and the general allowed them to drink water at will.

"Wha!" When Cao Cao's soldiers were almost ready, a rampant and smug laugh broke out on the city of Yecheng, and in the light of the torches, Dong Chong appeared at the head of the city in a big way, pointing at Cao Cao and laughing: "Cao Cao'er, spare you for being a ghost, and I also drank my second master's footwashing water today!" But the second master, I am a kind-hearted person, I heard that your Cao Cao's daughter is very beautiful, quickly kneel down and surrender, and then send your daughter with both hands, the second master, I can consider sparing your life. ”

Hearing Dong Chong's smug laughter, Cao Cao and Guo Jia in the distance glanced at each other, and found that each other's faces were as pale as paper, and sure enough, the Cao Cao soldiers who began to carry water gradually felt headaches, dizziness and chest tightness, and the weaker soldiers were already serious to the point of cramps in their limbs, and after a while, these poor soldiers began to incontinent, kneeling on the ground, and then rolling and suffocating to death.

"Quick, spit it all out." Cao Cao shouted frantically, these soldiers are the most elite of Cao Cao's army, and if he loses this army, Cao Cao will have no chance to turn over in Jizhou!

In fact, there is no need for Cao Cao's order, the frightened Cao Cao soldiers are already spitting out with their throats in their eyes, but unfortunately Dong Chong and his impostor brother are the same raccoon dogs, and they have always liked to take advantage of people's dangers. The war drums in Yecheng were beating, the four gates were wide open, countless people of Yecheng and Dong Erjun fought out of the city, and the Cao Cao army, whose morale was extremely depressed, could resist, Cao Cao cried blood, and had to command the army to flee south, and Dong Erjun did not chase after him, but only selected the Cao Cao soldiers who were poisoned and left alone, and cut off the heads to change military merits, and even the heads of Cao Cao's soldiers who had died in the independence or died in battle, these family members and the old and weak heavy soldiers refused to let go.

Dong Chong didn't dare to take the heavy responsibility of defending the city lightly, but he laughed proudly on Yecheng City: "Come on, hurry up and send a letter to Jia Junshi, so that he doesn't need to send reinforcements, the second master, I win more with less, and I have completely defeated Cao Cao!" Dong Chong saw that Tian Feng's face was not good, and immediately reacted, and shouted with a smile: "Also, send someone to the lower reaches of the Weishui River first, and inform the residents along the river that they are not allowed to drink river water for the time being!" ”

(PS: The incubation period of strychnine toxicity is 30 minutes to 2 hours, which varies from person to person, and consumption of seven grams can kill you.) In addition: the poison gas bomb used in the book is not fictional, it appeared for the first time in the Northern Song Dynasty in history, the ingredients are grass aconite, croton, wolf venom, strychnine five taels each, arsenic two two two, flame nitrate thirty taels, sulfur fifteen taels and charcoal powder five taels, mixed combustion to produce poisonous gas, can make the poisoned person bleed to death from mouth and nose, the book advances the use time. ）