Peek at my diary, Cao Cao dominates the Three Kingdoms

Speaking of the navy, we must first talk about the situation in Xiangfan area.

To put it simply, there are rivers and waters everywhere here, so the navy is the most important military force here, and the cavalry, which used to be invincible in the Central Plains and the North, has become a little bit restrained.

In the south, with a strong enough navy, you can easily penetrate the entire Jingxiang area along various rivers.

In the vicinity of Xiangyang, apart from the Hanshui River and the Baihe River, there are basically no large places that can provide naval training grounds. Only Panyangze further south has enough space.Historically, after Cao Cao captured Jingzhou, he trained his navy in Panyang Lake, and then went down the Yangtze River to compete with the navy led by Zhou Yu at Chibi.

Now Cao Jun's influence has not yet penetrated into Jingzhou, so Cai Mao's navy was training in Danyang not far from Xiangyang.

Dan's territory can be regarded as relatively broad, and it is also a good choice to train the navy here.

The navy led by Lu Yan does not need training for the time being. They have been cruising in the Hanshui River and the Yangtze River, basically blocking all the upper reaches from Jiangxia.

Xiangyang has been an important military town since ancient times.

Especially in the Southern Song Dynasty, Xiangyang blocked the Mongolian army for more than ten years, and even forced the Mongolian main force to go around to attack the Sichuan Basin, trying to attack the Southern Song Dynasty in a detour.

The reason why Xiangyang City is so strong is that the soldiers work hard and the people unite as one; the second is the intricate geographical advantages outside Xiangyang City.

To the north of Xiangyang City is a spacious Han River, and to the east is the Baihe River, which protects the east of Xiangyang.

The east and west sides of Xiangyang are high mountains and hilly areas. The Mongols are all cavalry and not proficient in water, and there is no way to detour in this place.If you make a detour, you may have to go a longer distance, but if you go around, it is better to attack Changsha or Chaisang directly.
The Mongols had no choice but to go south to Xiangyang to continue to struggle.

But Cao Cao is different, his current navy is even stronger than Jingzhou and Jiangdong!The Xiangfan area is basically under the control of Cao Jun, and Xiangyang City has been completely isolated with the cooperation of Cai Mao's navy.

It is impossible for Xiangyang City to have foreign aid now, so it can only rely on its own city defense to resist Cao Jun's offensive.

After confirming that the main attack on Xiangyang City this time was the Han navy under Lu Yan's command, Cao Jun's other teams have been curious about how this navy will attack the city.

They didn't make them wait too long. In the early morning of the second day, under the urging of the formation commanders, the Dahan Navy unloaded a cannon covered with red cloth from the ship and pulled it into the barracks.

When Cao Cao and the generals who had seen artillery before saw these artillery, they immediately understood Lu Yan's plan.

"Does he want to directly attack the city of Xiangyang City with artillery?"

"I heard that Chaisang City was breached by artillery!"

"But how can Chaisang City compare with Xiangyang City? I still feel very confused"

The soldiers in the army talked a lot, but Gan Ning and others were not affected at all, and they still firmly followed their own plans and implemented them step by step.

There are more than 600 artillery pieces on one hundred warships.

But with the joint efforts of countless civilians and soldiers, it only took one day to send them all to the military camp.

After a day of rest,
The next day,

The 30 troops marched out together, forming an iron barrel formation on the west, north, and south sides of Xiangyang City!

Cao Cao, Lu Yan and others led the army to a distance of [-] steps outside Xiangyang City.

At this time, I saw a group of well-armored soldiers lined up on the city wall at the head of Xiangyang City; not only that, there were ballistas and trebuchets on the city wall, which were enough to pose a threat to Cao Cao and others who were three hundred steps away.However, the distance is still a bit remote, and the aim is not enough, so they didn't try to shoot at it.
Cao Cao pointed to the city wall of Xiangyang City, which was nearly five feet high, and said, "Mr. Lu, is such a fortified city, are your artillery really sure to break through it?"

"I should still be a little sure, how will I know if I don't try it out?" Cao Cao was surprised by Lu Yan's words.
"Uh..." Lao Cao was at a loss for words for a while, and after a long time, I dare you to say that you are not completely sure!

Lu Yan smiled, and said again: "Even if the city wall of Xiangyang City cannot be completely destroyed, the power of the artillery is still enough to crush the will of the defenders in the city. You should know, Mr. Cao, that attacking the city is the bottom line, and attacking the heart is the top priority." .As long as we show the strength enough to break through Xiangyang City, then many of the following things can actually be done logically."

Lao Cao thought about it too, so he laughed and replied: "Okay, let me see how you can show enough strength to defeat the will of Xiangyang defenders!"

The walls of Xiangyang City are five feet high and three feet wide.

In ancient China, most city walls were built with rammed earth.

There are stone walls in some places, but not all of them are built of stone.

First, suitable stones are not available everywhere; second, whether mining, transporting stones, or building city walls is very labor-intensive and financially expensive, there are almost no places where city walls can be built entirely of stones.

The most important ancient city walls are rammed earth walls.

The main raw material of the earth wall is naturally soil, which facilitates the use of local materials.Another advantage of a rammed earth wall is that it can be constructed as a single piece.

However, the soil used to build the city is treated soil.

Some city builders added sheep's blood, eggs, and other substances to the soil and stirred them to increase the viscosity of the soil.

When building walls, each layer of soil should be tamped and compacted before the second layer is laid.

These layers were superimposed on top of each other, forming a wall over ten meters high.

In order to increase the firmness of the city wall, the builders will also cover the outside of the rammed earth wall with bricks. This is the real structure of most city walls today.

But even if it is not a complete stone wall, it is by no means an easy task to bombard it with artillery.

But this is not a problem for Lu Yan, because he still knows some classic battle cases.

As the sun rose, the soldiers of the Han Navy began to rush to the front line after eating and drinking enough.

Without delay, Lu Yan directly ordered Gan Ning, Su Fei, and Xu Sheng: "The whole army advances, attack Xiangyang!"

Following the orders of the generals of various ministries, Cao Jun began to advance steadily.

When the navy soldiers advanced to the maximum lethal range of the cannons at the top of the city, they all stopped.

The effective range of the artillery exceeds two kilometers, and the maximum power is more than one mile away. Moreover, it still uses a new type of gunpowder that has been improved many times. The range is enhanced and the power is stronger than before.

The artillery array is enough to be out of the range of the enemy's catapults and ballistas.