Therefore, the craftsmen and officials of the Northern Song Dynasty at that time also took countless thoughts when governing this river.

Just outside the city of Bianliang at that time, which is now Nanjing, they deliberately set up zigzag embankments on both sides of the river.

In order to gradually slow down the speed of the river after this, the silt and sand are deposited outside the city in the calm river water.

In this way, less silt in the rivers in the city, which reduces the cost of dredging the Bian River every year.

After all, outside the city, boatmen who dredge rivers can work happily without worrying about affecting the city's traffic and livelihoods.

However, this also led to the Bian River channel outside Bianliang City gradually rising higher and higher year by year.

The general of the Mongolian army opposite should have quickly discovered the powerful weapon that could be used by cavalry reconnaissance.

After that, he ignited the frozen soil, burned smoke to block his vision, and feinted the attack to lure the fire dragon gunners in the city out of the city and entered the authentic fortifications... This series of actions were done in one go! It can be seen that the "grassland golden eagle" was not a false reputation, but a very difficult character!... At this time, the ground outside Nanjing was flooded with water and was already covered with mud and water. It was obviously not suitable to attack the city immediately now, so the Mongolian soldiers outside the city retreated.

They didn't care about this day or half. As long as one night, the mud and water outside the city seeped into the soil, they would be frozen as hard as iron by the cold wind of this day and night.

At that time, they can continue to attack Nanjing calmly, and no longer have to worry about any authentic ambush under their feet and behind them! ... Monk Wanyan Chen had already predicted that the attack launched by the Mongolian army would definitely be extremely fierce in the morning of the third day after a day and a night.

But what he didn't expect was that the other party's methods were so rapid and harsh! Just early in the morning of the third day, when Monk Wanyan Chen and the others came to the city again and prepared to welcome this tragic battle.

When Monk Wanyan Chen looked into the distance on the front of the city where the morning light was just revealed... He immediately shook his whole body! He saw a tall and majestic figure appearing in the hazy morning mist in the hazy morning mist! These things were like giants, and they were slowly coming from a distance towards Nanjing City.

When Monk Wanyan Chen saw this scene, he stomped his feet hard, lowered his head and cursed! This is... a giant trencher! The Mongolians must have mobilized craftsmen to build this extremely domineering siege weapon from the time they arrived at the city of Nanjing.

After two days, the number of catapults built by the Mongolian army exceeded fifty.

When Monk Wanyan Chen saw their size, he felt that his head hurt like a needle! With this body, the huge rocks he emitted were probably hundreds of kilograms?

Now it is no longer a question of how many people the defenders in the city have been killed by them.

After this battle, it was all the same whether the city walls of Nanjing could exist!... When these catapults got closer, the huge oppression brought by their tall bodies made the defensive soldiers on Nanjing silent, and the entire wall was silent.

They have seen the catapult, but when have they seen such a huge catapult?

When these trenchers stopped at the city, they formed a team.

Just now, Monk Wanyan Chen's eyes were like arrows, staring at these extremely huge guys.

"Now these Mongolian Tartars have two choices..." At this time, Monk Wanyan Chen muttered to himself: "Either they use a trenched stone to throw out scattered stones, and the stones fall like rain at that time, and it will be extremely difficult for the city to defend.

They will send soldiers and catapults to cooperate and attack the city with all their might."

"They can quickly capture the city walls with this method, but when we fight to the death, their casualties will definitely be indispensable."

"There is another option, which is that they use a trencher to throw the whole boulder.

In this way, the Mongolian army can gradually collapse our city walls!”

"Under this tactic, they can do without sending troops to attack the city.

You just need to wait for the city wall to collapse, and then use cavalry to rush through the gap in the city wall directly... But when you collapse the city wall in this way, it will take longer..." "No need to consider, they must choose the second one!"

At this time, Wu Lei and Da, who was beside Monk Wanyan Chen, said without hesitation: "Meng soldiers are few, fight for death and injury with us, they can't fight!"

When Monk Wanyan Chen heard this, he turned around and looked at Olei and Da in surprise.

Immediately, he saw an extremely firm look on the other person's face - it was obvious that he was very sure of the conclusion he had drawn.

...When the catapults under the city lined up in a row, after they were in place 50 meters away (150 meters).

Just as these catapults were raised high, almost three feet tall, they began to sink gradually under the pull of the soldiers.

At the same time, Monk Wanyan Chen's heart sank down! Sure enough, the Mongolian army's catapults had already begun to be launched, but the Mongolian troops under the city had no intention of attacking the city.

Just as Jida said, they really planned to destroy a section of the city wall! "The whole army withdrew from the city wall! Go to the base of the city wall to gather and standby!"

At this time, Monk Wanyan Chen immediately shouted out his order.

Then, the defenders retreated along the horse road like a tide on the entire Nanjing city.

...The stones thrown by the trencher also have arcs when flying.

Therefore, before the city wall was destroyed, the Jin soldiers hid under the base of the city wall, which was the safest place.

Moreover, they are closer to the city wall and it is also convenient for the enemy to attack the city, and they can go to the city to defend at any time when they are planning to attack the city.

After leaving some sentries on the top of the city, Monk Wanyan Chen himself prepared to evacuate from the city with Wanyan Chenglin, Olei and Da.

But at this moment, they heard a whistling sound like a strong wind from the distance outside the city!... When the three of them looked up to look into the distance, they saw the catapult on the opposite side suddenly lifting its tail like a ferocious giant scorpion! In the counterweight net pocket made of leather in front, countless huge stones were pulled down by their own gravity, sinking downwards, pulling the catapult's arm.

Just at the tip of the arm, on the cowhide ropes as thick as arms tied, huge stones larger than the Eight Immortals Table were thrown into the air with the howling wind! They were seen rolling in the air with the awkward wind.
Chapter completed!