If it weren't for stamping, an ancient blacksmith could use sledgehammers to punch it out with iron blocks... the difficulty of the craftsmanship would have made the Jin Dynasty craftsmen so desperate that they would have hit the wall.

In addition, there are also steel-arm crossbows.

That was the carefully prepared spring steel with carbon content in Tongzhou Arsenal.

To be honest, the craftsmen in the Jin Kingdom might be able to build them in the same way, but what they made was not broken after a high carbon content.

It is because the carbon content is too low and it becomes mature iron, but after pulling the bowstring, it cannot be played back.

You should know that the Tongzhou factory's mastery of the carbon content of steel has even exceeded a few thousandths of the level.

For those Jin Dynasty craftsmen who don’t even know what carbon is, how could they make such things in batches?

What's more, there is that steel string.

Each steel string on the steel arm crossbow is made of sixteen thin steel wires twisted.

Both the thickness and appearance are very similar to the steel wire core inside the bicycle gate line in later generations... Things like this make Jin craftsmen sigh! It can be said that even if they are made of these steel arm crossbows, they will still be a tiger but a dog.

So when they reported the results of their observation to Monk Wanyan Chen, the general of the Jin Kingdom immediately threw the matter aside with regret.

...After the attack and defense on the Nanjing city walls started, the steel-arm crossbow immediately played a huge role, and the Mongolian army was obviously not a vegetarian.

This invincible army that lies across Europe and Asia has never lacked flexibility.

So they quickly made adjustments to their tactics.

After two days of shooting at the siege, Monk Wanyan Chen immediately discovered that the Mongolian army had begun to change its siege strategy.

When the war began again that morning.

A smoke had risen from the front of the Mongolian army's catapult position.

This is the Mongolian army burning the wood full of grease in front of the formation, intentionally allowing the smoke to rise more than a hundred meters ahead of it, gradually forming an area covered by smoke.

After this, Monk Wanyan Chen discovered that when both of them were shooting at each other.

The stones on the opposite side were "whizzing" out of the smoke and accurately hit the head of Nanjing city.

However, when the Jin Dynasty's catapult was launched, it could not see the opponent's target at all! In fact, this was when the Mongolian army discovered that the situation was wrong on the first day, and then the catapult battle against the next day.

Accurate survey and mapping were carried out on the distance and height between the Nanjing city wall and the Mongolian army's trencher.

In this case, the Mongolian army was in a wide field.

So they just need to move the catapult slightly and light up smoke, so that the Jin army on the city could not find the target they wanted to attack.

However, the Mongols' trenchers did not need to look at the target. Anyway, the Jin army's city wall was placed there, so it couldn't escape.

They just need to throw the stone at the distance and height determined in advance.

So this moment immediately put the catapult on the city at a disadvantage! If it were ten years ago, the Mongolian army would definitely not have such a level.

Because things like numbers, distances, and angles were only able to rely on rough estimates for the Mongolians at that time, and it was difficult to accurately calculate them.

But now they are no longer the same, because during Genghis Khan's expedition, he also brought back a large number of Western craftsmen and scholars.

The advanced weapon technology, including counterweight trenchers, has always been highly valued by the Mongolians.

Because of this, the Mongolians' level of weapons technology has far surpassed before.

This also makes them more and more comfortable in every battle.

With the continuous supplement of tens of thousands of Mongolian troops, the number of trenchers under the city is increasing.

On the Nanjing city wall, whenever a batch of new catapults were assembled in the night, they would soon be smashed by the Mongolian army's huge rocks one after another when dawn! By the fifth day of the battle, there were only a few catapults on Nanjing city.

At this time, Monk Wanyan Chen also realized that his city guarding troops might have to start a hard hand-to-hand combat again.

Sure enough, it was almost the same as he imagined.

The morning of the morning after all the catapults on the city were destroyed, a large number of catapults from the Mongolian army began to throw fire bombs under the city of Nanjing.

Not long after, the smoke and flames rising under the Nanjing city wall blocked the sight of the soldiers on the city wall.

Then, in the smoke, the Seminister soldiers in the Mongolian army were carrying rows of large shields and began to march under the city.

During this period, Monk Wanyan Chen had tried his best to mobilize the craftsmen and built a part of the gap on the city wall in the past few days.

However, because it is winter, the reconciliation of mud will freeze and freeze together, the work of repairing the city wall is also extremely difficult.

However, they finally built a city wall more than two meters high in the gap, but because they were very different in color from the original city wall, their goals were very obvious.

It had been concentratedly bombarded by the Mongolian scattering aircraft and collapsed into a pile of broken bricks and rubble again.

Then, when the Mongols released fire bombs this time, blocking the sight of the steel-armed crossbowmen on the city.

When they carried large wooden shields and approached the city of Nanjing... At this time, Monk Wanyan Chen stomped his feet in annoyance when he saw it! There was no doubt that this was the "old fox" in the vanguard army, reporting all his previous attacks on Nanjing City to the commander of the Mongolian army.

Therefore, the Mongolian army's attack on Nanjing will be more rapid and effective.

Because they made full use of their previous combat experience.

Now Monk Wanyan Chen also knew that no matter how dangerous he was, the troops of Yang Miaozhen of Shandong Army would not be able to come to rescue them.

Because on the day Yang Miaozhen evacuated, the monk Wanyan Chen on the top of the city saw the vanguard army outside the city also set off, chasing Yang Miaozhen.

That was a strong army composed of pure Mongolian soldiers, with a total of 20,000 people! Monk Wanyan Chen knew that Yang Miaozhen must be in a place, exhausting his mind and entangled with the Mongolian army.

So if he wanted to keep Nanjing, he could only continue fighting alone with his courage and intelligence.

At this time, Monk Wanyan Chen saw rows of shield walls under the city rushing towards Nanjing City like a tide.

However, the steel-arm crossbows on the city were difficult to accurately shoot due to the smoke.

Moreover, even if they fired a large area of ​​volleys, they would be blocked by the giant shields! They were swarming towards the gap in the city wall.
Chapter completed!