Hundreds of vats were quickly buried under the walls to the west and north of the inner city, and 2,000 soldiers climbed on them to listen to the movement underground.

Li Yanqing finally thought of the reason why the Jin soldiers drained the moat water, it must be that the Jin soldiers were preparing to enter the city from the tunnel, due to the influence of the terrain, the water of the east and south moats was difficult to drain, and the groundwater was abundant, Li Yanqing was basically sure that the Jin soldiers would enter the city from the north or the west, because the ground buildings on the north side were demolished, the tunnels were easy to be discovered by the defenders, so far, there was no trace of the tunnels outside the north city, and Li Yanqing also ruled out the north city.

Most of the buildings in the western outer city are well preserved, which provides excellent cover for the Jin soldiers to build tunnels, and the nearest building is only a hundred steps away from the city wall, and the Jin soldiers only need to dig more than 100 steps to enter the city.

Li Yanqing focused on the northwest corner, which is the highest and the most solid soil, and the hole from here is the least likely to collapse.

At the same time as the comprehensive protection of the Song army, the epidemic situation in the Jin Bing camp has further deteriorated, and the most serious epidemic in Beizhai has fallen ill by more than 10,000 soldiers and nearly 3,000 deaths until night, and more than 2,000 people have died today, which is the largest number of deaths since the outbreak of the epidemic.

Several other military villages also have hundreds to thousands of people fall ill, the total number of sick people reached 15,000, more than 4,000 deaths, the least of which is the military village is the Zhongjun village, only more than 400 people fell ill, there are no death cases, this is also the experience of the Han military doctors in the Chinese military village, the first to ask the Jurchens to change the habit of drinking raw water, so that the epidemic did not break out on a large scale in the Chinese military village.

After the withdrawal of the army, Wan Yan Xian also ordered the 50,000 troops of the Chinese army to take the lead in the north, and the other armies waited for the implementation of the last step to attack the city before considering pulling out the camp and returning north.

Under the night, Wan Yan Xian also stood on the high platform and looked at Tokyo City from afar, the moonlight was slightly dark, and he could only faintly see the outline of a city, Wan Yan Xian also had a solemn face, and was silent for a long time.

At this time, Wan Yan Lou said in a low voice of shame: "I am incompetent and have failed to live up to Marshal Du's expectations." ”

Wan Yan Xian also shook his head, and said slowly: "Do you know why the Jurchen cavalry was able to defeat the 200,000 Song army with 30,000 elite soldiers, and only lost a few hundred people, but attacking the capital was just the opposite, but our 200,000 army could not break through the city wall garrisoned by 30,000 defenders, what is the reason, have you considered it?" ”

Wanyan Lou thought for a while, and whispered: "Maybe it's because siege is not our forte. ”

"Then why was Taiyuan City captured? Why was the outer city of Tokyo captured again? ”

"Is it because Li Yanqing ......?"

"Actually, you are right partly, it has something to do with the fact that we are not good at attacking cities, and it also has something to do with Li Yanqing's ability, but these are not the main reasons, the main reason is the character of the Han people, they often burst out with unimaginable strength in desperate situations, born in sorrow, and die in peace is this reason, the same army, when they are in a desperate situation, they will not retreat, but fight against the water, put the ground to death and come back to life, this is the reason for our failure."

"But we captured the emperor and the emperor of the Song people, in fact, it is not too much of a failure."

Wan Yan Xian also smiled bitterly and shook his head, "The most important thing that the Han people lack is the emperor." ”

After speaking, Wan Yan Xian also turned around and walked under the sentry tower, and his order came from afar, "Let Xizhai also retreat north!" ”

Wanyan Lou suddenly had a feeling that in fact, Marshal Du was not optimistic about tonight's final blow.

.........

The reason why the Jin soldiers decided to use the method of digging tunnels to enter the city was also an accident, when a team of Jin soldiers searched for property, they accidentally found a secret passage in a large mansion close to the northwest corner of the inner city, the secret passage was about fifty steps long, only a dozen steps away from the moat.

After Yan Xian also got the news, he decided that the soldiers would continue to dig and dig a tunnel to the inner city, so that the Jin soldiers could enter the inner city through the tunnel.

But the overhead moat is a huge threat, Wan Yan Xian also inspected the terrain, then sent Wan Yan Zongwang to lead 100,000 people to cut off the Bianhe, the moat lost the river water replenishment, the higher west and north moat water subsided, from dusk, five hundred gold soldiers in a thousand commanders led by a commander began to dig the tunnel, the progress is very fast, just half an hour, the tunnel crossed the moat overhead, began to march towards the city wall.

Inside the city, 2,000 soldiers were engrossed in listening to the vat, which was a good sound amplifier that made full use of the principle of the earpiece to amplify subtle sounds.

At this time, a soldier suddenly jumped up and hurriedly beckoned to Zhang Qing, the commander on duty in the distance, Zhang Qing walked forward quickly and said, "Do you hear the movement?" ”

The soldier nodded repeatedly, "I heard the digging noise!" ”

Several soldiers next to him also stepped forward to listen carefully, and they all raised their heads and said, "There is indeed movement!" ”

Zhang Qing also knelt down, listened for a moment, got up and said to a soldier: "Quickly go and report to the capital, just say that you have found the sound of enemy digging!" ”

The soldiers rushed away, Zhang Qing ordered the soldiers to move the surrounding several large tanks, leaving only one main tank, and after a while, hundreds of soldiers hurried around Li Yanqing.

"Found the tunnel?" Li Yanqing asked.

Zhang Qing pointed to the big vat, "It's just below this big vat, and it's about two zhang away from us."

Li Yanqing immediately ordered: "Dig the tunnel and prepare for a poisonous attack!" ”

Hundreds of people dig pits together, some soldiers take hundreds of poisonous fireworks and thunders, poisonous fireworks and thunders are a kind of firearms invented by the Song army in the early days, gunpowder is packed in a paper bag, which is mixed with highly toxic powder, and the gunpowder bag will emit a large amount of poisonous smoke after ignition, which is a sharp weapon to deal with the tunnel.

After a while, a large pit five feet deep and nine feet square appeared in front of everyone, and at this time, everyone heard the obvious 'bang! Boom! The sound of digging was only a few feet from the pit.

Suddenly there was movement in the pit, the soil on the pit wall loosened, revealing a two-foot-wide hole, and then a human head poked out of the hole, without waiting for him to react, a sharp arrow swished out, shooting through the head of the golden soldier, the golden soldier died tragically immediately, several soldiers jumped off the pit, dragged the body out of the hole, lit more than a dozen poisonous fireworks and thunder, threw into the hole, the hole immediately came from a violent coughing sound, and then someone in the cave shouted in fear, the poisonous smoke in the cave was filled, and soon there was no movement.

A short time later, a soldier shouted at the top of the city: "There is smoke in the outer city." ”

Li Yanqing immediately ordered, "Irrigate!" ”

The soldiers had already prepared two thousand buckets of water, and poured them into the pit together, and the water overflowed along the mouth of the cave, and soon overflowed from the outer city. With a loud bang, an earth-shattering thunder exploded in the moat, blowing up a large pit in the moat, and the tunnel below collapsed, and more than a hundred golden soldiers were buried in the tunnel.

．．．．．．

A quarter of an hour later, Wan Yan Xian also received a report from the Jin Soldiers, the tunnel attack failed, and he couldn't help but sigh, "Order the whole army, pull out the camp and return to the north!" ”

In May of the first year of Jingkang, the defense of Tokyo that lasted for nearly half a year finally ended with the northern retreat of the Jin soldiers, this battle, the Jin soldiers suffered nearly 100,000 casualties, and the Song army also paid the price of nearly 200,000 casualties, at the same time, the Song Dynasty Emperor Zhao Huan and the Emperor Zhao Ji were captured and taken away by the Jin soldiers, but in the tragic battle to defend the capital, the Song army finally held the inner city and kept the last dignity of the Great Song Dynasty.

The sky gradually brightened, there were several dull explosions in the distance, and the temporary construction of the Bianhe dam was blown open by the Song army, and the Bianhe River water flowed violently, and soon filled the moat, and the water level of the Bianhe River in the city also began to rise rapidly, and soon returned to its original state.

Soon, as the spies came with the news of the retreat of the Jin soldiers to the north, the city was suddenly cheered, and the whole capital was boiling, and hundreds of thousands of people rushed out of their homes, beating gongs and drums, singing and dancing to celebrate the victory of defending the city.......

But Li Yanqing knew that this was only a military victory, and the devil of plague lurked outside the city, so he ordered that the city gate should not be opened, and sent 2,000 soldiers to cover their mouths and noses with gauze, wear gloves, and wear long boots to go out of the city to clean up the battlefield, and throw all the corpses into the pit and pour fire oil on them.

Li Yanqing immediately issued several orders in succession, 'The soldiers and civilians of the whole city drink raw water and eat raw food, the water must be boiled, and the food must be cooked; ''No open defecation; ''Anyone who has symptoms of vomiting or diarrhoea must report it to the police.'' ’

In fact, since dusk yesterday, Li Yanqing has ordered the implementation of extremely strict epidemic monitoring in the city, every five households must nominate one person as a surveillance, and the situation must be reported five times a day, and there will be a chief monitor for every 100 households, and a medical officer for every 500 households.

Not only that, but the Song army also spread a layer of quicklime in the urn city of Jinglong City, and built a potion pool, all the soldiers who came back from outside the city soaked in the potion pool, and then changed into new clothes, shoes and socks, and threw the old clothes into the earth pit to burn them, and then entered the barracks for observation for three days.

Li Yanqing sent a total of 4,000 troops, each of them had their own tasks, in addition to the 2,000 people who cleaned up the battlefield, Zhang Hu led 500 cavalry to Guancheng County, Zhengzhou to meet the King of Kang, Zhao Gou, Zhang Qing led 1,500 people to carry fire oil to the Jin camp to destroy, mainly to completely burn the Jin camp.

Li Yanqing came to Cai's Mansion to visit Cai Jing, an old minister who lived in the mansion, Cai Jing did not leave the capital after Zhao Huan ascended the throne, but was ordered by Zhao Heng to think about it behind closed doors at home, which also enabled him to escape the catastrophe of dying on the way to the south in history.

Cai Jing's Xiangguo Mansion was originally in the outer city, and there was also a special house covering an area of ten acres in the inner city, after Zhao Huan ascended the throne, he moved back to the inner city to live, and donated the outer house to the imperial court.

The eldest son Cai You was killed by the rebel army with the Emperor Taishang, the second son died early, the fifth son was bitten to death by a snake, the third and fourth sons were dismissed from office and exiled to Baizhou for being involved in the Wang Huang case, the sixth son was in poor health and stayed in his hometown, and the younger son took a group of grandsons back to his hometown for refuge, and at present, only his grandson Cai Zheng followed and took care of him.

Li Yanqing came to Cai's mansion, Cai Zheng was already waiting at the door, he hurriedly stepped forward and bowed, "Welcome Li Shaobao, the mansion is shining, it's an honor!" ”

Cai Zheng is about thirty years old, is the fourth grandson of Cai Jing, once served as a servant of the Fuwen Pavilion, Zhao Huan has been dismissed after ascending the throne, but he has won the essence of his grandfather's calligraphy, calligraphy is excellent, learning is also good, and the temperament is gentle and elegant.

Li Yanqing smiled slightly: "Yanei is too polite, Ling Zu can be?" ”

"The ancestor is in the house, Li Shaobao, please come with me."

Li Yanqing followed him into the mansion, Li Yanqing had been to Cai Xiangguo's mansion in the outer city, the mansion was splendid, extremely extravagant and gorgeous, but the other house in the inner city was a different scene, the layout was very simple, and the utensils were a little rough, it looked like a small family with a tight life, which really made Li Yanqing secretly admire, this Cai Jing is really good at camouflage, no wonder it can have several ups and downs in the past few decades, and it is indeed outstanding.

Li Yanqing came to the inner house, but saw an old man planting vegetables in the garden, he was wearing a half-worn flat scarf, wearing a coarse gray short coat, wearing coarse cloth bloomers, leggings with white cloth, wearing a pair of old cloth shoes on his feet, leaning his back, holding a water scoop in his hand and watering the vegetable field, there was no difference from the old farmer who was farming in the countryside, I saw Cai Zheng come forward and give a deep salute, "Grandfather, Li Shaobao is here!" ”

Li Yanqing couldn't help but be stunned, this old farmer who grows vegetables is actually Cai Jing?