The rain was pouring down, and the sky was dark.

In the middle of the mountain road, black cavalry flickered.

Alarm bells immediately sounded on the city wall, and countless Tibetan soldiers were awakened.

Li Xuan wore a bamboo cloak, raised his eyebrows and looked at the checkpoint in the distance, and asked sideways: "That checkpoint is called Yanshiping Pass, why did the Tubo people come up with this name?" ”

Qiu Zhenmu grabbed the horse and whispered closer: "I heard that Princess Wencheng was resting here back then, so she casually named it. ”

Li Xuan nodded and said, "If you are asked to do it, how long will it take to take it?" ”

Qiu Zhenmu immediately groaned, and then said seriously: "It takes three days, the Tubo people are afraid that they have completely blocked the city gate with stones, relying only on the right guard, and without losing too much, three days is necessary." ”

Don't lose too much, this is a military order issued by Li Xuan to the armies.

This will be directly related to the sustained combat capability of the Luo Daoist army in Tibet, and it is of great importance.

"Looks like you've got an idea." Li Xuan smiled and said, "Let's go back and prepare, now that we are only half a month away from the autumn harvest in Tibet, we should do it." ”

"Whoa!" Qiu Zhenmu immediately gave up her hand, and her expression suddenly became invigorated.

"Back!" Li Xuan turned his horse and headed towards Gradan Dongguan, and Qiu Zhenmu and the others quickly caught up.

The Tubo soldiers who were about to climb down from the city wall of Yanshiping Pass in the back suddenly stopped in mid-air, their faces at a loss.

……

The horse's hooves broke through the puddle and splashed countless times.

Li Xuan led people to rush directly into the Gradan East Pass.

As soon as he entered the military mansion, Yang Zhirou greeted him directly and arched his hand: "Marshal, Chang'an official document." ”

"Hmm!" Li Xuan nodded, and said as he walked quickly: "Except for the right guard, the other guards generals, Zhonglang generals, will discuss in the hall tomorrow." ”

"Whoa!" Yang Zhirou immediately surrendered his hand, handed over the official document, and then turned around to pass the order.

Months of tranquility will be completely shattered with Li Xuan's words.

……

Li Xuan walked quickly into the back hall, and after sitting down, he began to pick up the official document and read it.

Li Zhu brought hot tea from the side, and the tea gas was flying.

Outside, the heavy rain drifted, and the tea rippled a little.

Looking at the official document, Li Xuan's brows furrowed slightly: "It's a Turkic matter." ”

Ashina Nishulu hopes to return to Chang'an to meet the Son of Heaven in order to settle the affairs of the grassland in the future.

Since Pei Xingjian broke the Turkic coalition army and captured Ashina Fengzhi, Ashina Wenfu immediately fled into the depths of the grassland with the remnants of the army.

made it clear that he wanted to pull out the Tang Grain Road, and then find an opportunity to sneak attack the grain road.

Pei Xingjian did not advance directly, but moved forward steadily step by step, while chasing and killing Ashina Wen Fu, he was also collecting the tribes on the grassland step by step, trying his best to pacify and calm the situation, and at the same time compressing Ashina Wen Fu's living space.

It was at this time that Ashina Ni Shulu seized a rare opportunity and escaped Ashina Wenfu's control.

However, Ashina Nishulu did not immediately fall into Pei Xingjian's arms, but fled with his subordinates to Xizhou in the eastern part of the grassland.

It was originally a marginal area of Tuli rule, and Ashina Nishulu had a considerable foundation.

The current Ashina Nishulu is still the Turkic Khan who was elected by the 24 Turkic states, especially after getting rid of the control of Ashina Wenfu, returning to the eastern part of the steppe, gathering the old department, and Ashina Nishulu's strength has risen greatly.

When he stabilized the situation, he took advantage of Pei Xingjian's still chasing and killing Ashina Wen Fu, and decisively proposed a court meeting to the emperor.

The Turkic Khan met with the Emperor of the Tang Dynasty.

As long as he can successfully arrive in Chang'an, then the huge political impact of this court meeting will greatly shake the internal stability of Ashina Wenfu.

The emperor had no reason to refuse, so he agreed to Ashina Nishu's court meeting half a month ago.

Li Xuan is now a little late in receiving the official notice, and Ashina Nishulu may have already set off for Chang'an.

It can be seen that Ashina Nishulu is a person with little ambition, and if he can reach an agreement with the emperor, then at least half of the grassland will stabilize immediately.

The benefits of it were obvious, and the emperor would not refuse.

However, will those ministers in the court watch the eastern part of the steppe rise up as a new Great Khan?

Ashina Ni Shulu may be honest, but his descendants may not be the same.

Therefore, Ashina Nishuluan's trip to Chang'an will definitely not be so easy.

"It's time." Li Xuan raised his head, looked at Li Zhu and said: "Send a message to Chang'an, keep an eye on the direction of the wind in Chang'an, as well as the attitude of the prime ministers, Shangshu, Shilang, generals, and Zhonglang generals, about Ashina Nishu.

There are also the hidden personnel operations in all kinds of affairs, staring to death. ”

"Whoa!" Li Zhu immediately surrendered his hand, and then turned around to deliver the message.

Li Xuan sat behind the table, her eyes narrowed slightly.

He knew that the matter in Chang'an would not end so easily, and it would be indispensable for some ups and downs.

It just so happened that he was able to take advantage of this opportunity to see who Pei Yan's person was.

Also, what will they do in this matter, so that they can destroy Pei Xingjian's entry under the condition of stabilizing the situation on the grassland to the greatest extent.

What kind of high-sounding reasons will they come up with?

Li Xuan should watch carefully and study hard.

……

The rain drifted heavily, and the raindrops hit the ground with a crackling sound.

Li Xuan stood under the eaves, looking at the gloomy sky above, and the black clouds seemed to be endless.

Behind him, Qiu Zhenmu, Heiya Changzhi, Tang Zhenxing, Li Duozuo, Cui Ding and others were discussing the next plan to march into the army.

Xiao Siye, Wei Hongji, and Yang Zhirou stood on the side, listening, and recording.

Just when the rhythm of everyone's voices was low, Li Xuan suddenly spoke: "This rain has been raining for three days, and I'm afraid it will rain for a few more days...... Shaofu, the dam on the mountain, how long will it take to be full? ”

"Originally, it was expected to be ten days, but looking at the current weather, I'm afraid it will be full in three or five days." Wei Hongji walked up from behind.

Li Xuan smiled and said, "That is to say, the Qinling Tomb will gradually withdraw its troops in the next few days, and then use the city to gradually reduce the threat of the torrent." ”

"Yes, they blocked the gates from the beginning to prevent them from being swept open, but we can kill them directly with the help of wooden boats." Wei Hongji looked at Li Xuan with some surprise, wasn't this the battle plan they had discussed from the beginning?

First, use the guards to take the checkpoint in advance, then open the city gate, let the power of the flood be preserved as much as possible, and finally rush directly to the Amdo Pass.

When they arrived in Amdo, they used wooden ships to directly attack the city.

The plan is so planned, but many people are also worried that this kind of plan is actually very difficult to succeed, and Qinling has made enough arrangements in Amdo Pass.

According to the scout's report, hundreds of wooden stakes up to a foot long were now being inserted diagonally into the ground outside the city of Amdoguan, and once they used the wooden boats, they could easily be blocked.

"It's been four months since March, and too many people have guessed our plan." Li Xuan sighed softly, and the generals behind immediately stood up.

They were all smart people, and they immediately guessed that Li Xuan would inevitably make drastic changes to the advance plan of the hand.

In other words, from the beginning, Li Xuan did not intend to act completely according to this plan.

"Herald!" At the beginning of Li Xuan, everyone suddenly became solemn.

"From now on, mobilize catapults to Yanshiping, and then completely block the city gate from the outside, and then open a dam to discharge the flood." Li Xuan gave an order, and everyone immediately responded without the slightest hesitation.

Li Xuan turned to look at Wei Hongji, and seeing his frightened look, Li Xuan smiled and said, "Fortunately, there is this rainstorm, and we can use this rain to discharge the flood in advance." ”

"I'm afraid I'm going to be in big trouble about Qinling." Wei Hongji still had a look of disbelief on his face, and he couldn't help but shake his head.

"Nothing too much trouble." Li Xuan turned to look at the rainy night outside, and said softly: "Since the return of the Qinling Tomb from Luo in May, he has been running back and forth to prepare all over the place, and no one knows how many means he has prepared, just like he doesn't know how much water we have gathered. ”

Wei Hongji bowed his head.

This is Li Xuan's real purpose.

In the event of a heavy rainstorm, the dam can be used to flood the city, and the dam can be quickly rebuilt and re-impounded after the dam is destroyed.

In addition, in addition to the water in the current dam, Li Xuan is also using various cities to block the dam at the beginning, blocking the flow of water section by section.

On the last day, the dam will be completely discharged, and the water that had previously accumulated in the city will burst out.

At that time, the pouring water will be terrifying.

Even on the Qin Tomb did not expect it.

Amdo Pass, even if it is a means to prepare again, under a flood, everything will be completely destroyed.

"Go ahead, tomorrow morning, open the dam and release the water!"

……

There was a loud "boom", and the majestic water rushed down from the predetermined mountain road, and rushed fiercely on the city wall of Yanshiping, and it was completely lost in a blink of an eye.

The sergeants in the city didn't even react, they were already directly swept away by the current.

"Kill!" Countless boats came down the river from the rear and went straight into the city.

Bloody.

The thousands of guards in the city were directly knocked down by the sudden attack.

Cui Ding and Qiu Zhenmu rushed straight ahead, and they quickly rushed to the city gate on the south side, and then in the turbulent torrent, the entire city gate was completely closed.

The bags of grass and soil, and the stones, which had been prepared long ago, were all thrown down.

The water rose rapidly until it did not cross the city walls, and then rushed down rapidly.

The water that had been accumulated for four months directly rushed out, and in the blink of an eye, it had already flooded the two city gates.

The third city gate reacted slightly, but the flood had already rushed straight over.

At the same time, there were many small boats with bags of grass and soil, but there were no people in sight.

Inexplicably, after these boats arrived at the city, they immediately sank silently.

The rising water level is getting higher and higher, and people can't help but feel nervous.

But at this time, when there was still more than a meter from the city wall, the water level suddenly stopped.

The guards in the city couldn't help but breathe a sigh of relief.

The city gate has been completely blocked by stones, so that even if the Tang army kills them, they have a height of more than one meter, which is enough to support them for a while.

The Keeper couldn't help but look back.

It seemed that in the distance, a dozen fast horses were rushing madly.

With a "boom", blinding lightning pierced the dark sky, and a larger torrential rain poured down.

……

Li Xuan stood on top of the Marong City Pass, looking at Amdo in the distance.

Spanning more than a mile and two feet high, the heavy city wall, like a monster, stood in front of Li Xuan's eyes.

After the Amdo Fortress, there is a small city.

This is the northernmost border pass of Tibet, when Tibet was just rising, in order to prevent the invasion of Yangtong and Subi cavalry, they built this checkpoint.

The walls are not very many, but they are thick enough.

The walls are not very strong, but they are thick enough.

Li Xuan seemed to be able to see the figure of the Qin Mausoleum on the city wall, and he stood firmly on the city wall, looking at Li Xuan.

As if asking again: What do you take to break through my city?

(End of chapter)