Soon after the capture of the Sword Gate, it suddenly rained heavily, and it became heavier and heavier.

At this time, a scout came to report that more than 5,000 Sui army reinforcements were coming from Lingxiao Pass, which was more than 100 miles away from Jianmen Pass, and it was estimated that they had come to reinforce Jianmen Pass.

Li Shimin's heart sank, and when he was about to arrange to meet the enemy, he saw Xia Xue's beautiful eyes flickering: "After a heavy rain, a flash flood broke out, His Royal Highness the King of Qin, now is an opportunity, please give me 2,000 men and horses, and I will deal with the reinforcements of the Sui Dynasty." Xia Xue has always wanted to experience and exercise her ability to lead troops and command in ancient times, so she wanted to take advantage of the fact that she had just made a great contribution and when Li Shimin, the king of Qin, was happy, she put forward this request to train herself.

Li Shimin now has great admiration for this extraordinary little fairy, so he agreed to her proposal without even thinking about it. However, he was still a little uneasy, feeling that Xia Xue's request for 2,000 men and horses was too little, after all, there were more than 5,000 reinforcements from the Sui army. After deliberation, Li Shimin transferred 4,000 Tang troops from the army to Xia Xue's command to block the Sui Dynasty reinforcements.

Xia Xue knew that Li Shimin cared about her safety, and she was very moved, so she didn't refuse, nodded firmly to Li Shimin, and led four thousand men and horses to brave the heavy rain to rush over in the direction where the Sui army reinforcements came, and Li Shimin led the army to stay at Jianmen Pass.

The torrential rain poured down, dense as a curtain, and the raindrops were so heavy and urgent that the skin hurt when they hit their hands, and if a person stood in the rain, his eyes could hardly see.

The dense rain is like a silver curtain of water, as if connecting heaven and earth.

After more than two hours of rainstorming, it subsided, but with the sound of a cow's roar, the torrent roared and collided at the foot of the mountain, and the torrent was turbid, mixed with gravel and fallen logs, struggling and pouring into the distance.

Xia Xue led her troops to a small mountain river early before the flash flood arrived, and hid on the wooded high ground by the river. This small river Xia Xue passed through the scouts and was the only way for the Sui army to send reinforcements.

Usually, people roll up their trousers and wade through this mountain river. But now it was a different story, the sound of the water was like thunder, the water was no more than three feet higher than usual, and the water was rushing at an astonishing speed.

Xia Xue knows that such a flash flood is unpredictable, it comes and goes quickly, maybe in the middle of the night, the water level will suddenly drop, or in the middle of the night, the water level will suddenly rise. In order to avoid flooding the golden mountain, she camped high behind the forest.

At dawn, the rain had stopped an hour earlier, and after another hour of flooding, the water flowing down the mountain was now not very deep.

Xia Xue asked the Tang army to pay attention to concealment, and the Sui army might be coming.

The water level of the mountain river had been lowered and slowed down, and soon after, the figure of the Sui army appeared in the opposite forest.

The first time she led the troops into battle, Xia Xue's heart beat wildly disobediently after seeing the enemy.

More than a dozen Sui soldiers stood on the shore and observed for a while, then waded across the river and spied into the forest again, but found nothing abnormal. Then he roared and beckoned to the other side of the river, and in an instant, the dense Sui army appeared, rushing over with spears and steel knives.

The deputy general of the Tang Army beside Xia Xue saw that a large number of Sui army reinforcements were crossing the river, and suggested to Xia Xue in a low voice: "Eldest grandson girl, now while the enemy army is crossing the river, the main force has not yet crossed the river, we can quickly repel them by winning more and less, and killing them in half a crossing!" ”

He thought that Xia Xue would definitely agree, because this was a rare opportunity and a common tactical strategy in military books, but to his surprise, Xia Xue shook his head and did not take his suggestion. I can't help but despise this little girl who doesn't know the art of war, does she want to learn Song Xianggong's "stupid pig-like benevolence."

During the Spring and Autumn Period and the Warring States Period, in the Battle of Hongshui, the Chu army began to cross the Hongshui River and rushed towards the Song army. Song Xianggong's general Mu Yi suggested: "Chu has many soldiers, but our army is small, take advantage of the fact that they have not all crossed the river and are crossing the river to destroy them." Song Xianggong said, "We are known as the teachers of benevolence and righteousness, how can we take advantage of others to cross the river and attack?" The Chu army crossed the river, the formation was chaotic, and began to set up a formation on the bank, and Mu Yi suggested: "While the Chu army has not yet lined up and the formation is not stable, now is a good time to attack." Song Xianggong shook his head again and said: "A sneak attack is not a gentleman's demeanor, we will attack when they are in formation." The final result was that the Chu army defeated the Song army, and Song Xianggong was also shot in the thigh by the Chu soldiers and almost died.

The deputy general of the Tang Army thought that Xia Xue also wanted to learn Song Xianggong's "benevolence, righteousness, morality" and "gentlemanly demeanor".

Xia Xue didn't explain, and after about 2,000 Sui troops had just crossed the river, she waved her hand and ordered an attack. A war drum sounded, Xia Xue led two thousand Tang troops from the depths of the dense forest and rushed out, brandishing swords and guns to meet the Sui army reinforcements, two thousand against two thousand, evenly matched, and the number was not superior.

The deputy general of the Tang Army couldn't help but shake his head and sighed when he saw that Xia Xue didn't fight more or less, but only sent an evenly matched number as if it were a fair duel, he already had a premonition that this battle would definitely end in a fiasco like Song Xianggong's Battle of Hongshui.

However, after the battle between the two armies, the adjutant general of the Tang army was surprised to find that the soldiers of the Sui army who had just crossed the river seemed to be vulnerable, and they were cut down by the Tang army in an instant, almost a one-sided rout.

The deputy general of the Tang Army didn't know what to do, and he only thought that the "little fairy" Xia Xue had some weird magic.

In fact, Xia Xue knew that it was not that the Tang army was much more powerful than the Sui army, but that the river was extremely cold after the flash floods in autumn and winter. The water was not deep, and the river was not very wide, as if it were not dangerous, but in fact it was more terrible than fire. Even the strongest man stood in the water for a quarter of an hour, and his legs would be numb and unconscious. Barely crossing the river from this extremely cold mountain torrent, the combat effectiveness can be imagined.

This secret was discovered by Xia Xue last night, and she wanted to play a flooded Seventh Army last night. She set up a blockage upstream, but the water was too rapid at that time, so she took some soldiers upstream to try to block the water, but the big boulders were thrown into the water and quickly swept away.

When she was depressed, she noticed that a few soldiers stood by the shallow water for a while and could not move, but fortunately they were dragged out by the early notice. Xia Xue put her hand into the river to try, only to find that the mountain torrents here in autumn and winter are extremely cold, and the new discovery made Xia Xue flash, and a new battle plan quietly formed in her brain.

A shrewd general must be good at discovering and making good use of everything that is available. Xia Xue found that it was not advisable to set up a flood to "flood the Seventh Army", but the water flow was extremely cold. The men who had just come out of the water had numb legs and could not move for half a day, and this was the new valuable fighter plane that could be used, so they hurried back and redeployed the army.

Of course, she knew very well the truth that "soldiers are treacherous" and "soldiers are not tired of deceit", not to mention pursuing Song Xianggong's "stupid pig-like gentleman's benevolence", her goal is not to repel the enemy, but to completely annihilate the enemy army.

What she hopes is to use the secret she discovered to destroy as much enemy force as possible, so, of course, she will not "attack halfway" to scare off the enemy army, but deliberately let more enemy troops cross the river before attacking in full force.

The Sui army that had just crossed the river was numb because of the cold on their legs, their movements were stiff, and they lacked combat strength, while the Sui army in the water had not yet discovered the crux of the problem, and desperately wanted to cross the river to support their comrades, the Sui army that crossed the river had exceeded 3,000 people, and the river was full of people who were still trekking in a hurry, and the Sui army, whose legs were numb from the cold, and the Tang army, which was flexible in action and superior in physical strength, had fallen into a one-sided decline.

In the fierce battle, a group of Tang soldiers suddenly rushed out of the upper forest, only shooting at the live target in the water with bows and arrows in the distance. Those Sui soldiers who were still in the water and their legs were numb from the cold had difficulty dodging, and they were shot by arrows and fell into the extremely cold river water. The water was turbulent, and the blood that flowed out and the corpses of the Sui soldiers who had fallen into the water were swept away in an instant. Seeing that the battle situation was unfavorable, the Sui army, which wanted to wade back to the other side, had no way to retreat.

The Sui generals who led the team on the other side of the river now had only more than 500 people left around him, and when he saw this scene, he knew that the strong man should break his wrist, so he decisively led the remaining 500 Sui troops to retreat immediately and retreat to Lingxiao Pass. But it is all the main forces in Lingxiao Pass that have already crossed the river, if these soldiers are lost, what if they return to Lingxiao Pass? Lingxiao Pass is not as steep as Jianmen Pass, how can it be defended without the main force?

But the current situation to fill in these more than 500 people is just to send them to death, the Sui general is in a dilemma, and finally let out a desperate roar, and the soldiers who are ready to abandon the river immediately withdraw to Lingxiao Pass. It's a pity that he realized it too late, and as soon as the war started, Xia Xue quietly sent a thousand-strong Tang army team to go around the river downstream and intercept their retreat.

The mountain river became a place of death, and the Sui army reinforcements, who were in danger and isolated and helpless, either surrendered or were buried in this small river, and the whole army was destroyed.

Xia Xue took advantage of the aftermath of victory to take the empty Lingxiao Pass in one fell swoop. And the Sui army guards on Lingxiao Pass did not know that the 5,000 reinforcements they had sent had been wiped out until the Tang army led by Xia Xue descended from the sky.