In order to obtain the support of the Khitan, Shi Jingtang of the Later Jin Dynasty sent envoys to take the 16 prefectures of Yanyun to formally cede the land of the Khitan. After the Liao Dynasty occupied Youzhou, Yelu Deguang ordered Youzhou to be promoted to Nanjing and renamed it "Nanjing".

Xijin Prefecture, also known as Yanjing, is one of the Khitan's accompanying capitals. It has not expanded the old city on a large scale and basically maintained its original appearance. The entire city is 36 miles in circumference, with a wall of three zhang high and one zhang five feet wide. The wall of the city is

The base is eight feet wide, with an enemy tower and a complete set of battle oars. There are eight gates in the outer city, and there are moats outside the gate, and wooden suspension bridges are installed on the trenches, which are considered as a defense preparation.

The Khitan took Youzhou as Nanjing. The city has an imperial palace and a Zicheng, also known as the Imperial City, the inner city. The Khitan master lived in this city when he visited Nanjing. It was located in the southwest corner and shared the west gate and the south gate with the big city.

Among them are the palace area and the royal garden area. The palace area is located in the east of Zicheng and protrudes southward beyond the city wall of Zicheng. The east side of the palace area is Nanguoyuan District, and the west side is Yaochi Palace Garden District.

The garden is large in size, with a small island in the Yaochi Lake, a Yaochi Hall on it, and a royal residence next to it.

Since the Zicheng is located in the southwest, there are only two main roads in the city that run through the whole city. One is the east-west road, named Tanzhou Street, which connects the Qing Jinmen and Andongmen; the other is the north-south road, connecting the Gongchenmen.

And Kaiyang Gate. The south gate and the west gate of the imperial city are the same as the south gate of Liaonanjing, and the south gate of the south gate. From the imperial city, it can directly lead to the suburbs through Danfeng Gate or Xianxi Gate. Because these city gates are set up

If it is not opened, it is also called a secret gate. There are twenty-six "fangs" divided into the city, each of which has a wall, a fang gate, and a fang name on the door, so as to manage the residents of the city.

The Song and Jin jointly attacked Liao. The city of Yanjing became the focus of the competition. Song and Liao, Song and Jin launched several wars here. In the end, the Jin Kingdom occupied Yanjing and became the front line of the battle between Song and Jin, and the outpost base for the southward several times.

Jin was set up a left-behind place here, and was guarded by the general Zong Fu. After Zhao Jie repelled the Jin army that attacked Song, the status of Yanjing City was even more important. On the basis of the original, the city wall was repaired and the city walls were added to increase defense measures. It became a building in the north.

The city...

After Wanyan Zongfu fled back from Zhuozhou, he launched a full-scale war preparation. After receiving the news that Wu Shu had led his troops back to aid, he immediately became confident. First, he summoned the nobles in the city, and the great hero explained that the current Song army's northern expedition was launched again.

, requiring the officials and people in the city to swear to defend Yanjing City to the death. People in Yanjing City were issued an announcement to recruit young and strong men to help defend the city, and at the same time began to take measures to hoard food, grass, military funds, and weapons.

"Deputy Commander, we have only 30,000 soldiers who can fight back to Yanjing City. Recently, various departments recruited young and strong men of all races, and the tribes were filled with troops, expanding to 60,000. However, most of the young and strong men were Khitan, Han people were miscellaneous soldiers and subordinates.

Bohai and Xi people in Meng'an Mouke were lacking in training and had not passed the battle formation. The city was so big that it was inevitable to lose sight of one thing." Wanyan Xiyin and Zongfu inspected the city defense, and his face was filled with sorrow. He was not optimistic about the future, and Youyou

He said, and when he saw Zong Fu did not say anything, he then said, "The Song army attacked from Pingzhou and Hebei. It is said that the two armies had 100,000 people and sharp firearms. How can we defend such a few people?

live!"

"I know I can't defend it, but it's up to people. We must do our best to fight to the end and be loyal to the country." Zong Fu stopped, held the battlements and looked out of the city, observing left and right for a while and replied, "Song

The arms are sharp and the artillery fire is fierce. The city walls of Qigou Pass are no worse than those in Yanjing City, but they cannot resist bombardment. There are also firearms and trenchers in our arsenal, which can be used to deal with them. There must be more obstacles outside the city.

, prevent the enemy from approaching the city gate."

"There is only this. The only thing we can rely on is this city. One city gate must be sealed on each side. At the same time, prepare materials for repairing the city walls, prepare more wood and stones, and organize archers to prevent the Song army from climbing the city walls.

We must also be prepared to stick to each other for a long time!" Wanyan Xiyin nodded and said. He was doubtful about whether reinforcements could arrive in time. Zhao Er would not sit idly by and watch Wu Shu's reinforcements enter the city. Perhaps this is his besieging the city and attacking the aid.

It's a trick, but now it's time to do everything possible to defend the city...

The history of human development is actually a history of war. The civilization of the Chinese nation is also based on killing and attacking. In this period, a complete offensive and defensive rule was produced. In the Song Dynasty, the offensive and defense of cities reached a peak, which led to the military strategists of the Qin, Han, Sui and Tang Dynasties.

Nothing can be seen beyond his opinion.

The Jurchens won the world immediately. They were also a nation that was good at learning. They also learned to attack and defend the city in the war with the Liao and Song dynasties. At this time, there were also the Jurchens' first talent Wanyan Xiyin and many traitors in Yanjing.

'Liao Gou' gave them advice. Soon Yanjing's urban defense plan was released. The next day, the Jin army forced 100,000 migrant workers from inside and outside the city to start construction, and also sent troops to collect them from outside the city.

Two hundred thousand stones of grain and one million tons of firewood.

A few days later, Yanjing City was built into a strong city with distinct levels and both offensive and defense. The position spread out from thirty miles outside the city, and was divided into a barren circle, a warning circle and a city defense circle from the outside to the inside.

Within thirty miles from the city is a barren circle. It is a solid wall and clear the fields. All those who can be withdrawn into the city will be transported away. If necessary, they will burn the uncarried ones and poison the wells. Ten miles away from the city, they will enter the warning.

Circle. extend the edge of the warning circle, and set up a reconnaissance post on the commanding heights at a certain interval to form a cordon. After the reconnaissance post, set up a contact post every three miles to maintain the connection between the reconnaissance post and the city, hold the flag during the day,

Fires are raised at night. In addition, mobile teams must be set up for each major road and level to be responsible for reconnaissance and counter-espionage. This trinity-wide warning circle will withdraw when the enemy enters the suburbs and is about to siege the city.

Wherever the long-range weapon shooting in the city is the edge of the city defense circle. All objects outside the city within this range are flattened to clear the shooting angle and vision. Ten feet away from the base of the wall are moats, and there is water in the moat

Just half a foot below the water surface, bamboo thorns of varying lengths are buried. A thorn bridge will be built on the moat outside the city gate. This kind of bridge has only one beam, and the two ends of the beam extend from the cross-bone on the edge of the moat.

When the enemy walks onto the bridge, pull the mechanism to retract the crossbar, and the bridge deck will turn over, causing the enemy to fall into the trench.

The moat was attached, "Feng Yuan", which was a rammed low wall. Soldiers were deployed behind it. When the enemy entered the moat or trenches, they cooperated with the defenders on the city to kill or burn them with weapons.

Inward, a wide horse-repelling belt is mainly used to prevent the enemy's ladder from approaching. In areas where the defenders enter and exit, the horse-repelling will be buried in a shallow state of easy movement and will be marked on the top of the city. Finally,

Within one meter of the wall, there are interlaced pointed wooden stakes one foot higher than the ground, which also has the functions of hindering the enemy from climbing the city and stabbing the enemy to fall to death.

Next is the city wall, which is the last barrier to attack the city. The width of the top of the Yanjing city wall is enough for the defenders to move and fight freely on it. There are three feet thick and five feet high on both sides of the wall, among which the female on the outside

The wall is high and has shooting holes with wide outside and narrow inside. In addition to building permanent corner towers, a large number of temporary towers are also added to the wall. Every fifty steps, an observation building protruding three feet above the outer wall is built.

In addition to the horse face, a wooden building that protrudes from the outer wall every 100 steps is built to eliminate dead corners under the city and attack the enemy under the city. Similarly, every 100 steps, there is also a block of high-pointed wooden stakes connected to each other.

The wall is crossed, and a small door is opened for passage. After the enemy climbs the city, it is closed as a roadblock. Finally, every 300 meters, a wooden building protruding from the inner female wall is built to prevent the enemy entering the city.

The base of the Yanjing city wall was more than ten feet thick, and even if the base of the city was hollowed out, it would not collapse due to the loss of the center of gravity. The Jin soldiers dug from the inside and out of the city every about 200 steps, and stopped half a foot closer to the exterior wall.

A secret door was formed to save it for assault. There were also kiln stoves with bellows, firewood and obstacle cars on the inside of the secret door, so as to prevent the enemy from discovering it. When entering it, smoke and block the passage.

.Under the city tower, there are city gates inside and outside the city gate tunnel, and there are also hanging doors for lifting and lifting in the middle of the door tunnel. All three doors are equipped with movable perforations. In order to defend against fire attack, in addition to preparing water tank basins and long handles in the gate tower

Outside the sack, the city gate is wrapped in iron or is nailed with thick mud on the outside of the door in staggered round-headed wooden stakes.

Compared with the step-by-step defense outside the city, the city is a smooth scene. The wide climbing road on both sides of the city gate and the corner of the city connects the ring road paved with extended walls. The ring road is connected to each major road, forming a

The city is well-connected. However, the city is not a place to enter directly. After the Ringcheng Road, a low rammed earth wall was built. A deep and wide trench was dug in front of the wall. The trench was filled with firewood, and once the enemy was in the

When the army enters the city, it can ignite firewood to form a fire wall, and attack friendly forces on the ring road based on the wall.

In terms of defense tactics, Yanjing City not only has offensive defense and flexible deployment in defense, in order to resist the power of the Song army's artillery, Wanyan Xiyin also came up with a new tactic of using cannons against cannons. The so-called cannons against cannons

The cannon is to use a stone throwing cart with a range of 300 steps to attack the command and artillery positions of the Song army; use a stone throwing cart with a range of 200 steps to attack the well-trained engineering operation units of the Song army; and finally use a stone throwing cart with a range of 100 steps to attack the stone throwing cart with a range of 100 steps to attack the position of the Song army's well-trained engineering operation units;

The car attacked the Song army's frontier siege equipment positions. At the same time, in order to prevent counterattacks and reduce the difficulty of transporting stone bombs, the stone throwing cart was not set up at the top of the city, but was hidden inside the city wall, and the shooting was directed by the observation post on the top of the city.

.

Zong Fu finally smiled at the city with both offense and defense and the stone throwing cart arranged under the city with long arms stretched out under the city. He felt that Wanyan Xiyin should write the four big words "As solid as a soup" hanging on it.

Zhao Er was satisfied with the aura at the city gate. Unfortunately, Zhao Er did not give him a chance, because he saw five flags of various colors erected on the contact post outside the city from afar. This was the Song army that was approaching

Signals from the suburbs. At this time, someone came to report, and the Song army team was also found in the north of the city... (To be continued. If you like this work, you are welcome to come to Qidian to vote for recommendations, monthly votes, your support is me
Chapter completed!