Now that he had decided to take Shu Han to attack, Li Yi immediately began to act. The next day www.biquge.info Li Yi summoned the ministers of the Military Aircraft Department in the imperial study, and said straight to the point: "I plan to declare war on Shu when the summer grain is harvested, that is, in May this year. ”

Although the Tang Dynasty was founded for a short time, Li Yi has been in charge of northern Xinjiang for many years. In particular, Youzhou, Jizhou, Bingzhou, Liaodong and the prairie have been under his control for nearly 20 years, and these areas are under the governance of Li Yi, the officials are Qingming, and agriculture and commerce are prosperous, so the current Tang Dynasty is a large number of soldiers, sufficient grain and grass, and the time has come to launch a unified war.

Xun Yu was the first to come out and said: "Your Majesty, the accumulation of two years in China is enough to support the war against Shu. The minister seconded the ......"

At present, launching a foreign war to expand the territory is still not as inspiring as eliminating Western Shu and Eastern Wu to unify the world. Now that the country is strong, when will it be better to wait without soldiers at this time? Therefore, all the ministers of military aircraft in the Military Aircraft Department agreed to declare war on Shu.

However, declaring war requires a name, and it cannot be done without saying a word. Therefore, Li Yi ordered the Military Aircraft Department to draw up an edict declaring war on Shu, and the text was passed on to the world.

In late April of the third year of Wude, Li Yi took the stage and appointed Guan Yu as the generalissimo of the East Road, raising 110,000 troops to attack Shu from Jingzhou. And Li Yi himself was the emperor himself, raised 150,000 troops, and attacked Shu from the direction of Guanzhong.

The Tang Dynasty declared war on Xishu, and the 300,000 army had begun to assemble and march, and the news came and the world was shaken.

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At the beginning of May of the third year of Wude, Chang'an.

Li Yi summoned four military divisions to discuss the matter of entering Hanzhong.

If you want to go south to attack Yizhou, you must first capture Hanzhong.

At the meeting, Xu Maogong reported on the defense of Yizhou.

Chengdu's Shadow Group Flying Pigeon Passed the Book, and Pang Xi, the general of Shu Han's expedition to the west, garrisoned Wudu County. On the Hanzhong side, the army led by Wang Ping, the general of the Shu Han expedition to the north, collapsed the mountain and blocked the Xiegu Valley and the Meridian Valley. Blocking the path of the Tang army's march.

The Shu army cut off the road between the Xiegu Valley and the Meridian Valley, and the Tang army could only go out of Sanguan and take the main road to Hanzhong County. However, this avenue has a dangerous pass at the end of the border of Hanzhong County, Yangping Pass. There are still about 30,000 soldiers and horses in Hanzhong, and although the Tang army continues to receive follow-up reinforcements, there are only 70,000 or 80,000 at present, and nearly half of these 80,000 are cavalry. Therefore, the Tang army did not have too many troops to attack the fortifications.

In the tent, Li Yi sat facing south and said in a deep voice: "Everyone, in order to deter some small people in the country, we need a quick and brilliant victory. If Wang Ping stubbornly defends Yangping Pass, it will be very disadvantageous to our army. ”

As the chief military advisor, Xu Maogong is well aware of the current situation under the rule of the Tang Dynasty, but fortunately, the Military Aircraft Department already has a charter, and he went out to play: "Your Majesty, Wang Ping blocked the road in the mountains because he was afraid. If he could fly the pigeon and pass the news to Xu Huang's troops out of Xicheng and march into Hanzhong County from the east, Wang Ping would inevitably divide his troops. Our army has won many victories and has strong morale, so the east and west are attacked, and Hanzhong can go down in one go. ”

In ancient times, there were no tunnels through the mountains, and there was no equipment to dig such roads. Lying in front of Hanzhong, the Qinling Mountains, the poor mountains and bad waters can not march at all, if you go around, it will be a battle of thousands of miles, just like the 25,000 miles in later generations, in fact, where is so long from east to west, north and south, it is only because of the poor mountains and bad waters that there is such a difficult distance.

Fortunately, Li Yi set up a war pigeon unit early, and now the military camps are popularized in various places, and the flying pigeon is passed on to Xu Huang's department, which can achieve the miraculous effect of quickly encircling Hanzhong. Zhang Wei can't take care of both the beginning and the end, and he will definitely lose.

Li Yi agreed with Xu Maogong's suggestion very much, and said: "With the addition of Xu Huangbu, it is not difficult to take Hanzhong, but how to arrange Wudu and other places?" ”

Zhuge Liang immediately said: "Your Majesty, the enemy has no strength to attack for the time being, and the cavalry of our army cannot go all out in the storm. It is better to attack Hanzhong, leaving only a few cavalry as mobile forces, and most of the cavalry went to Wudu and other places. The enemy will definitely defend the counties, and our cavalry will not attack the cities, but only cut off the connection between these cities and the surrounding areas. Shu is exhausted, and the material reserves must be at a very low level, and I believe that it will not be long before they run out of grain and grass and can only retreat to Xichuan. At that time, the combat power of our cavalry will be able to be brought into play, ambushing and sniping along the road. ”

Jia Xu followed and said: "What Zhuge Junshi said is good, the battle of Jingzhou consumed most of Liu Bei's strength. Shu has no potential. The elite cavalry of our army attacked all over Dongchuan, Liu Bei could not save it, he could only retreat to the Sword Pavilion. ”

Li Yi adopted the strategy of several people, and assigned Zhao Yun as the commander, Lu Bu as the deputy commander, Ma Chao as the vanguard, and Xu Maogong with the army, commanding 30,000 cavalry, out of Qishan to attack Wudu. And Li Yi himself led 50,000 soldiers and horses to march into Hanzhong through the pass.

In the middle of May of the third year of Wude, Li Yi led an army of 50,000 to the front of Yangping Pass, occupied all the dangers out of the pass, and set up nine camps, and the Chinese army Dazhai was in the avenue fifteen miles away from the front of the pass.

At the same time, the Tang army was approaching the city, and Zhengnei, one of the three major cities of Bashu, was already in chaos.

The county guard's mansion, the council hall, and Wang Ping, the general of the Shu Han expedition to the north, convened the civil and military affairs of Hanzhong County to discuss defense.

The martial arts under the hall are divided into two rows, one side is headed by Li Hui, and there are Ma Zhong, Zhang Wei, and Yin Huang. On one side, led by Yan Pu, there are Yang Ren, Yang Song, Yang Bai, and Yang Ang, the first major family in Hanzhong. This family is all from the Wudoumi Sect, and when they betrayed Zhang Lu, the gang took refuge in Liu Bei.

Li Hui said: "General, we have Yangping Pass, Shu Road is difficult, it is difficult to go to the blue sky, it is from our pass. Li Yi came here to destroy my Shu Han in one go. However, we only need to resist for a while, and the Tang army will inevitably retreat if it is weak in the future. ”

Wang Ping heard this: "What De'ang said is very true, Li Yi hurriedly raised troops this time, and he will definitely let him fall under Yangping Pass." ”

"We will definitely assist the general and repel the Tang army!" Ma Zhong and others bowed.

At this time, Yang Song and his group were squeezing their eyebrows, and they immediately bowed when they heard the voice.

"Report." At this moment, a member of the Tanma rushed into the conference hall, turned over and bowed to the ground, pointed out, and shouted, "The general is not good, the 30,000 troops of the Tang Army Xu Huang are coming along the Han River, and they are about to reach the territory of Chisaka." ”

"What?!" Wang Ping was taken aback. He didn't expect the Tang Army to move so quickly, and the Tang Army's Xu Huang Division, which was originally stationed in Changsha County, Jingzhou, would be killed so quickly.

Wang Ping only had 30,000 soldiers and horses left in his hands, how could he resist the 80,000 Tang troops killed by the East?!

"After Chisaka, it is Chenggu, which is the gateway to Hanzhong, and it must not fall into the hands of the Tang army. General Ben personally led the army, first defeated the Tang army Xu Huang's department, and then returned to Yangpingguan to fight a decisive battle with Li Yi! ”

Li Hui hurriedly said: "The general can't do it, so it is in Li Yi's arms, he just wants the general to divide the troops, if Yangping Pass is lost, Hanzhong will really be finished." ”

Wang Ping said angrily: "The Tang Army Xu Huang's troops are coming to the city, what are they guarding Yangping Pass, is there any salvation?" ”

Li Hui comforted: "The general is calm and don't be impatient, there will definitely be a way." ”

So Wang Ping calmed down temporarily, don't look at many people in this chamber, but Li Hui is the only one who can come up with a strategy. So from Wang Ping downwards, everyone looked at Li Hui.

Li Hui is worthy of being a strategist with stunts and wit, and as soon as his eyes rolled, he had an idea, and said to Wang Ping: "General, you can ask General Zhang Wei to take a team of soldiers and horses, so that you can block Xu Huang's soldiers and horses." ”

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Hanzhong is located in the western section of the Qinba Mountains, with the Qinling Mountains in the north, the Micang Mountains in the south, and the central part is where the county seat of Hanzhong is located, forming the landform of "two mountains and one river". The rivers in the territory are dense, hundreds of large and small rivers originate in the mountains, there are the first major tributary of the Yangtze River, the Han River, which runs through the east and west, and there is the Jialing River, a big river, which runs through the north and south.

However, no matter whether it is a big river or a small river, no matter where it originates in the mountain, in this largest Yangtze River basin, it follows the law that the rivers converge and go east to the sea.

On this day, the people and horses on the Han River were noisy, and more than 30,000 troops were marching along the river. It turned out that the Tang Army's Xu Huang Division had already passed through Chisaka and was preparing to enter Chengcheng along the river in Hanzhong County.

Xu Huang then ordered the scouts to go around and spy on the enemy's movements.

Xu Huang and Zhang Yiyi took the lead. As he was marching, a scout came to the dust, and when he got closer, he saw that his face was panicked, and he turned over and dismounted and bowed: "General, the big thing is not good, there is a big flood ahead!" ”

"How is this possible?!" Xu Huang was taken aback and said to Zhang Ren, "There has been no heavy rain in the upper reaches of the Han River recently, how can the water rise?" ”

Zhang Ren was also puzzled.

Xu Huang had always been cautious, so he ordered the army to temporarily stop advancing, and ordered the scouts to probe and report again.

However, after half an hour, there was no need to scout for the report. I saw that the water surface of the Han River suddenly soared, the river overflowed, and the water depth on the flat ground was more than half a foot.

Xu Huang was suspicious, so he ordered the army to retreat. He retreated five miles, and the depth of the water under his feet was still half a foot. And the scouts came to report that the place where the troops were previously stationed was more than a foot deep, and there was a tendency to deepen.

Originally, many rivers twisted and twisted through the mountains, and when they left the mountains, they joined the Han River. These rivers either flow along the mountain range or cathartize vertically from the mountain heights.

Li Hui planned for Wang Ping, and sent soldiers to build dams in the mountains to block many rivers and dam the Han River. When Xu Huang's army was about to arrive, the mountain river first destroyed the dam and released water, and after the water rushed down the mountain into the Han River, it destroyed the Han River dam and broke the Han River. The water volume in the Hanjiang River section soared in an instant, just like the passage of a flood peak during the flood season, and the surrounding roads were immediately submerged.

Fortunately, the Shu army blocked the dam mostly in the mountains, and it took time for the river to flow.

Hanzhong is upstream, so there is no danger. The overflowing water filled more than 100 miles downstream, and before the flood, manpower could not shake it, so Xu Huang had no choice but to retreat 100 miles to avoid the water. Another flying pigeon sent a message to Emperor Wude in front of him, saying that the enemy army broke through the Han River to block the road, and could not form a left-right attack.