There is no such thing as perfection in the world, and in the same way, there is no such thing as a city that is unbreakable without flaws and flaws.

Nanyang City is naturally no exception, and it also has its own huge weaknesses.

It's just that this flaw is known only to those who know it best, and the average foreign enemy can only find the flaw and make use of it if it has been tried hundreds of times, spent countless hours, and used the lives of countless generals to fill it.

But obviously, Sun Ning didn't need to be like this.

Because he had taken Nanyang before, he was already familiar with everything in this city, not to mention that there was also a Chen Qingyun who had been stationed here for many years.

And in their experience, the western wall of Nanyang City has always had great hidden dangers. Because when the city was repaired, there was a dark river underneath, which caused the foundation of the city wall to be not solid, and if the water from the outside was washed and soaked, the entire city wall would collapse inside and out.

Sun Ning wanted to break Nanyang, so he naturally hit the idea to the biggest flaw.

But as he said, if he attacked Xicheng as soon as he came up, on the one hand, it was difficult to guarantee whether the enemy would have a countermeasure, and on the other hand, he was also worried that they would be burned in despair. Therefore, he chose the strategy of attacking the east and the west.

On the surface, he was encircling three and missing one, letting go of the west and not attacking, and only hitting the other three sides, so that the defense of the west city became extremely relaxed and weak.

But in fact, he had already started planning and acting.

Nanyang Castle is the same as other castles, surrounded by moats on all sides. And when the Vietnamese army launched an offensive on three sides, it was natural to break the moat embankment first and divert water to other places, so as to really kill the city.

During this period, the soldiers who dug ditches to divert water had already been instructed by Sun Ning to deliberately direct these water flows to the west, so that the moat on the west side was raised vigorously, and after it was soaked out, the roots of the city wall were naturally completely soaked in water.

For the defenders who didn't know the biggest ill of Nanyang, this matter was naturally easily ignored by them, and even in the eyes of many soldiers, this could make Xicheng safer.

But what they didn't know was that under such many days of immersion, the roots of the western city wall had already been soft and festering, and they could not withstand the impact of external forces at all.

So on the night of the ninth day of February, the Vietnamese army's offensive against Nanyang officially began.

Under Sun Ning's command, the 20,000 men of the first army took the lead, and with them were more than 100 rushing chariots and crashing wood, followed by crossbowmen and other troops.

For this moment, the Vietnamese army had already paid an extremely tragic price for many days before, and thousands of soldiers were born to fill in the enemy's sword. But in order to be able to break the city, to be able to kill the enemy by surprise, so as to completely and completely snatch Nanyang and the food in the city, Sun Ning must give up this part of his life.

As the so-called mercy is not in charge of the army, this mercy is not only aimed at the enemy army, but also at its own soldiers!

All the soldiers knew that success or failure was at stake, so they were all in high spirits, and they charged with great speed, and after digging the rudimentary embankment that had been prepared beforehand, and directing the water of the moat aside, they rushed straight down the city.

The defenders of the city didn't expect this to happen tonight, and it was actually Xicheng, which had not been attacked before, that was attacked, and they immediately screamed again and again.

The whining horn had only been sounded a few times, and a rain of arrows had already taken the lead in breaking through the air and killing these people directly. But the news spread quickly, causing other soldiers and horses in the city to move quickly.

In fact, the defenders had been guarding against the sudden change of attack focus of the Vietnamese army, so the reaction was extremely fast, and the fortifications above had already been deployed before the army could reach the city wall.

Countless arrows, wood and stones, as if they didn't need money, rushed straight towards the enemy army rushing downwards desperately to smash them, just to stop their advance.

But this time, the Vietnamese army no longer had any worries, and with rows of shields in front of them, the army moved forward steadily, and soon reached the city wall.

"Prepare gold juice, oil and torches...... Also, arrange for someone to deal with their cloud ladder ......" Han Wenjie was the first to arrive, shouting and giving orders.

There seems to be no problem with these conventional ways of defending, and the other three sides have relied on them to repel round after round of attacks by the Vietnamese army in the past few days. In his mind, it should be the same today.

Countless soldiers and generals are also acting in accordance with this order, and there are indeed bursts of wails below, obviously many Vietnamese soldiers have been tricked. This made the morale of the defenders even more high, and they felt that another victory was beckoning to them tonight.

Only those generals who were holding tools to prevent the ladder from going up the wall were a little surprised, why did they all come to this time, and there was not even a single ladder on the wall? This is really different from the previous wars.

Han Wenjie, who heard the newspaper, also frowned slightly, not knowing what the Vietnamese army was doing.

It's just that because of the arrows flying up and down now, he didn't dare to venture outside the city wall to see a clear look, so he could only keep commanding and let everyone be prepared for all kinds of preparations.

At this moment, a loud bang suddenly came from below, and the entire city wall seemed to tremble.

Many soldiers were shocked, not knowing what was going on, and the action in their hands was slow.

Han Wenjie hurriedly boosted morale: "Don't panic, everyone, they're just venting." Our walls are three feet thick, and the gates are already stuffed with knives and boulders, not to mention such an impact, even if it comes hundreds of times, don't even think about ......it."

Boom Boom Boom ......

Before he could finish speaking, the same impact occurred below.

And this time there was more than one impact, but along the entire western city wall, stretching left and right, dozens of rushing cars were attacking.

The impact hit everyone's hearts like a thunderbolt, making many soldiers feel frightened: "General......

"Their donkey skills are exhausted, how can my Nanyang city wall be broken by such a random collision?" Han Wenjie was secretly frightened in his heart, and noticed that the trembling of the ground under his feet seemed to be a little inappropriate, but he still calmed down in his mouth and boosted the morale of the army.

Unexpectedly, before he could speak, his subordinates trembled and shouted: "Crack...... Cracked ......"

Han Wenjie quickly looked down, and his face turned pale.

I saw that cracks appeared on the ground of the city wall under my feet, and under the light of the torches, there were also cracks on the seemingly solid outer wall that was supported in front of me and became larger rapidly.

At first, it may be the thickness of a finger, but in the blink of an eye, it is almost up to the arm, and the gaps continue to spread in all directions, encroaching on the entire wall until it reaches every corner......

Some people died, but not completely......