The Heavy Cavalry was almost invincible in this era when attacking in a frontal charge, especially when the battlefield was set on the wide and flat northern plains.

Whether it is the Guirong Iron Cavalry or the Guanlong Cavalry, they have swept all directions with it, and on the frontal battlefield, such heavy cavalry has never suffered losses at the hands of the enemy.

But where is there any invincible army in this world?

Such heavy cavalry was able to be undefeated before, only because the enemy did not discover its weakness and flaws. In fact, its flaw is still obvious, that is, once it is really full impact, it is difficult to have reservations, and it is even more difficult to deal with various unexpected situations and complex terrain like a light ride.

The biggest weakness of heavy riding is not in people, but in horses.

Then there is the majestic horse, although it can carry hundreds of pounds of armor and warriors galloping like flying, but its four horse legs are still fragile, once they fall into the deep pit, only a part, under the huge impact, it is the end of the broken leg and the horse falls.

As soon as the mounts under them fell, these heavy armored cavalrymen who had previously needed the support of their comrades to even get on their horses would lose their combat effectiveness in an instant—they would have difficulty even trying to stand up when they fell to the ground, let alone face enemy attacks later.

It was only because most of these ghost warriors had fought on the northern plains before, and the geographical environment there was not suitable for digging a large number of potholes like this, that they had never had such a setback.

But today, on the edge of the Yellow River, Yanjin Ferry, the situation is completely different.

The soil here is extremely soft all year round because of the continuous soaking of the river, especially close to the tidal flats by the river, and you don't even need to dig it deliberately, as long as you step on it, it is a deep pit that can reach your knees.

At this time, as the Vietnamese army was pursued and fled to the river in a hurry, trying to seek rescue from Paoze, who was about to dock, more than 2,000 horsemen on the ghost black wolf also attacked and killed.

They now have only one goal, which is to kill all these Vietnamese soldiers who dare to smuggle to the north bank, so that the Han people in the south will not dare to set foot on the north bank of the Yellow River in the future, and other details, such as the current environment, are completely out of their consideration.

As a result, in the case of this thousand horsemen rushing together, many cavalry immediately broke their horses' hooves because their horses stepped on the deep pit left by the heavy cavalry in front, and the people also fell.

It's just that at this time, the Ghost Rong Heavy Cavalry is in the midst of a great victory of killing the Vietnamese army on one side, and no one on either side has discovered this strange scene.

At this time, the Vietnamese army had been forced to retreat to the river embankment, and behind them was the still raging and roaring Yellow River, as long as one step back, it would be a fatal situation. They actually broke out with a certain fighting spirit again, and they fought to the death, using their flesh and blood to make the last resistance.

And at this time, in the distance, the familiar voice had already arrived: "Digging into a pit, you can hurt the horse's legs, this battle can be won!"

A word that woke up the person in the dream, the emperor's words, made all the soldiers suddenly wake up, and at the same time, through the heavy horses that fell to the ground not far in front of them, they confirmed that the words were true and valid.

So what else is there to think about?

At that moment, a group of soldiers disregarded their own safety and quickly dug holes in front of them on the spot.

At this time, they had retreated to the edge of the Yellow River, and this tidal flat was already full of silt, the most soft, and they didn't even use any weapons, just digging with their bare hands, and they could quickly dig out holes the size of a sea bowl mouth and more than a foot deep.

In the blink of an eye, all these potholes were formed in front of the Vietnamese army, blocking between them and the enemy's heavy cavalry.

At this time, the ghost Rong heavy cavalry warriors finally found that the situation had changed, but they still did not take this obstacle to heart, and with the sound of the whistle, hundreds of horsemen immediately pounced fiercely, killing the two thousand soldiers in front of them like dark clouds crushing the city.

But just as they rushed to the twenty paces ahead of the Vietnamese army, the hooves and legs of the horses quickly sank into those deep pits.

At that moment, with a neighing, dozens of horses fell sideways, some directly broke their legs, and some slipped and fell. And the knights above the horses also landed together, and fell into the mud, and could not get up for a while.

Behind him, the two thousand heavy cavalry were stunned by this scene, and they were stunned on the spot for a while, completely unsure of whether to advance or retreat.

Just when the two sides suddenly reached a stalemate, on the Yellow River, a new batch of ships finally docked again, and a group of armor soldiers pounced fiercely in the shouts, and killed the heavy cavalry that was stuck on the opposite side.

Compared with the first batch of vanguard teams that were more good at water warfare, only for the sneak attack on Yanjindu, and mainly composed of Jiangnan and Huaibei soldiers, the second batch of Vietnamese troops who were sent to the shore were the real elite of foot combat.

Among them, there are both elite soldiers from Liangzhou and fierce soldiers from the southwest, and they all have one thing in common, that is, in these years, they have confronted the real cavalry head-on without falling behind.

So at this time, even if they were facing the ghost Rong heavy cavalry, these thousands of soldiers who crossed the river did not hesitate, although many of them had just been on the boat and their legs were still weak, and they vomited again and again, but now, they are the most fearless and daring real infantry warriors.

These Vietnamese soldiers who killed quickly were not only brave enough, but also extremely disciplined, with shields in front and spears behind, pressing straight towards the enemy. After blocking the cavalry's shots with their shields and controlling their already non-existent impact, a spear stabbed out quickly from the gaps in the shield, hitting the horses' hooves and legs outside.

With considerable experience, they naturally won't fight the heavy armor, but specifically pick on the weak points.

Suddenly, the screams rang out again, but this time, the battle situation had been completely reversed, and the Vietnamese army launched a fierce attack on the ghost Rong black wolf horse.

On this tidal flat, where the powerful impact of the heavy cavalry could not be fully exerted, the black wolf rider instantly fell into the biggest crisis.

And this time, they were not only facing the thousands of Vietnamese troops who had just landed ashore, but also the thousands of remnants who had been cornered before, and were able to turn over and attack more ferociously at this time, so this battle became more and more tragic with foot and cavalry.

As long as it is a cavalry that has fallen from its horse, it will be besieged by three or five people at the moment. Unable to even protect themselves, they were forcibly stripped of their armor and killed on the spot by spears and steel knives.

After being quickly killed hundreds of people, the black wolf rider finally collapsed, and all of them did not dare to struggle anymore, turned the horse's head, and galloped towards the rear to flee for their lives. Look at the book

It was only at this time that their superiority as cavalry became apparent again, and they were bent on fleeing for their lives, but they quickly distanced themselves from their pursuers and galloped away from the banks of the Yellow River as if they were desperate.