(Thank you for the tips from old friends and book friends of Tongxin Pavilion!) Some deletions have been made in the previous chapters, and the order of the chapters has been adjusted, I hope it will not bring trouble to the reading of book friends!)

Something that no one had expected happened.

I don't know if there is a flash flood near Tongguan, or if there is too much rain, and there is a flood in the forbidden ditch. Under the increasingly ferocious impact of the turbulent water, several "dam bridges" made of corpses in the ditch were washed away by the raging water, just like the dam of a dammed lake.

After the "corpse dam" in the most upstream was washed away by the flood, the very fierce water continued to wash away several dams and bridges downstream, and in the exclamation of the rebel soldiers, the monstrous flood carried a huge force, carrying a large number of corpses and the rebel soldiers who were washed away, and rushed straight towards the direction of the Yellow River, the momentum was terrifying.

At the time of the "dam break", most of the rebel sergeants who were charging along the west side of the forbidden ditch through the dam bridge were also carried directly into the Yellow River by the current, only those who were lucky enough to be stuck in stones or hanging on branches were spared, and some sergeants were lucky enough to be thrown ashore by the turbulent current and saved their lives, but these sergeants who survived were also frightened enough.

It is estimated that there are 1,000 or 2,000 sergeants who were brought directly into the Yellow River by the current, most of whom came from the north and could not swim, and were carried directly into the Yellow River by the current, and basically lost their lives.

In fact, such a situation is inevitable.

There is very little soil on Huashan Mountain, which cannot store water, and the rainwater falling from the sky is basically directly discharged. The low-lying terrain of the forbidden ditch was originally a naturally formed river channel in the mountains, and the water in the mountains in this area was discharged to the Yellow River through the forbidden ditch during heavy rains.

Soon after the heavy rain began to fall, there was a flow of water in the forbidden ditch, and a large number of corpses accumulated in the ditch and the rainwater could not be discharged in time. As the rain gets heavier and longer, the water accumulated between the ravines and ravines is also increasing, and some corpses will be moved while draining the water with difficulty, and under the action of the terrain, the corpses are further piled up to become one dam body after another, and the water flow in the forbidden ditch is finally cut into large or small dammed lakes by the dam body formed by the corpses.

More and more water overflowed the bridge and the eastern edge of the forbidden ditch, and the current also formed a strong pressure on the corpse dam. As the rainwater flow became more and more turbulent, the piled up corpses finally could not withstand the strong water pressure, and the dam collapsed, and the uppermost dam body was the first to begin to burst, and the strong water flow impact eventually led to a chain reaction, and the huge flood continuously washed away the corpse dam behind. The flood not only washed most of the corpses and thousands of rebel soldiers into the Yellow River, but also destroyed the "road" for the rebels to charge west of the ditch.

After all the dams were washed away, the turbulent water was still flowing in the forbidden ditch, and the rebel sergeants wanted to attack Tongguan City through the turbulent forbidden ditch, the difficulty did not know how many times increased, and the forbidden ditch was dangerously reappeared, it can be said that it restored all the functions of the beginning, and it was much stronger than the usual ability to resist the enemy, and the turbulent water flow was a very difficult difficulty for the rebels who wanted to continue to attack the city.

It was precisely because he understood these that Yang Xi couldn't help but scream in surprise after seeing the flood wash away all the corpses in the forbidden ditch.

God help me, it's not false at all.

When Yang Xi suggested to Ge Shuhan how to remove the corpses in the forbidden ditch, he made two suggestions: one is to burn with fire, and the other is to divert large water to flush it. The fire did not burn the corpses, and the flood caused by a heavy rain washed away all the corpses, which can not but be said to be the favor of God, the forbidden ditch is dangerous, and the degree of danger is even worse, and the rebels want to attack the city smoothly, it is basically impossible.

However, although Heaven has reached out to help, the number of rebels accumulated on the west side of the forbidden ditch outside the south gate is still quite large, at least seven or eight thousand people.

These rebel sergeants were also shocked by the raging floods in the forbidden ditch, and many of them fell into the forbidden ditch because they could not stand under the city walls, and were swept away by the flood. The sergeants who were lifted off the ladder also basically fell into the forbidden ditch, "swimming" in the turbulent water like fish, and finally returned to the Yellow River. But after all, there were a few sergeants who fell into the forbidden ditch and were washed away by the water, and most of the sergeants still accumulated under the city of Tongguan and continued to attack, but because of the fright caused by this sudden situation, the siege action slowed down.

"Brothers, rush to the city, or we will all be killed by the Tang army!"

A lieutenant general who commanded the siege brandished his sword and roared at the sergeants beside him.

According to the current situation, the sergeants who attacked the city have been cut off from returning, and the follow-up support of the men and horses cannot immediately rush over to support, they are fighting alone, either attacking the city head and occupying the city head in one go, or being annihilated by the Tang army at the city head under the city, or turning around and running away, jumping into the forbidden ditch with strong water and escaping back, but this is too difficult.

Passive beating, waiting for death is something that no one will do, and there is basically no possibility of success in escaping into the forbidden ditch and escaping back, and it is necessary to be washed into the Yellow River by the water.

Even if they were lucky enough to cross the forbidden ditch, they would be killed as deserters, and the choice for the rebels in the city was to attack the city without their lives.

Attacking the city and capturing the south gate can be said to be the only means they can survive.

With the shouting of the lieutenant general and the subsequent charge of the leading soldiers, many generals and lieutenant generals who commanded the battle also came to their senses, waved their swords one after another, and ordered their soldiers to attack the city at any cost.

With the commander's order, the rebel sergeants who understood their current situation all rushed to the city, not caring about how the defenders at the head of the city would react. This is a move to break the boat, and the rebels just want to take advantage of the fact that the heavy rain is still falling, and the Tang army on the head of the city cannot effectively attack with arrows, and the line of sight is not clear, and attack the head of Tongguan in one fell swoop.

The rebels' siege of the city fell into a frenzy, far more ferocious than just now, and for a while the defense of the city seemed to be very difficult.

I don't know if the Tang army at the head of the city was frightened by the flood in the forbidden ditch just now, or couldn't withstand the rebels' desperate siege of the city, and there were even sergeants who were afraid to move forward, so that more than 100 rebel sergeants stepped on the ladder and climbed to the top of the city.

Yang Xi didn't expect such a situation at all.

Heaven favored him, and after a flood washed away the forbidden ditch, washed away thousands of rebels besieging the city, and blocked the rebels' follow-up attacks, there were even sergeants who were afraid to move forward, causing the rebels to rush to the top of the city, so that the crisis reappeared. Yang Xi knew perfectly well that if the rebels stood up at the head of the city, then the follow-up men and horses would continue to rush to the head of the city, and it was possible that the south gate would fall.

Now the rebels under the city have no way to retreat, they can only have a chance to survive in a decisive battle, and these nearly 10,000 rebels will definitely attack the city with all their might, and there will be no retreat. What is hateful is that when the situation changes in our favor, the defenders at the head of the city will even be cowardly, which makes Yang Xi furious.