First, this made Tang Xuanzong very unhappy.

In order to cater to the holy will, several envoys of the four towns of Anxi led troops to conquer, but they failed to conquer Tubo.

Therefore, Tang Xuanzong directly issued a letter appointing Gao Xianzhi as the envoy of the camp festival and led 10,000 cavalry to conquer Tibet.

Gao Xianzhi marched from Anxi for more than 100 days, arrived at Telmanchuan, divided the troops into three teams, and made an appointment to meet at Lianyunbao in Tubo on July 13.

The Tibetans were guarded by nearly 10,000 soldiers in Lianyunbao, and they did not expect the Tang Dynasty army to suddenly attack. Seeing the arrival of the Tang army, they were greatly frightened, resisted by the mountains, and the artillery stones and rolling wood were like rain. Gao Xianzhi appointed the Lang general Li Siye, a native of Gaoling, as the commander of the Mo sword, and ordered him: "The enemy must be defeated before noon." ”

Li Siye is a tiger general, he personally carried a big banner, led the Mo swordsman to climb the city from the danger, fought hard, from the time of the battle to the time, defeated the Tubo army, killed more than 5,000 people, captured more than 1,000 people, and the rest fled. The envoy Bian Lingcheng thought that it was too far to penetrate into the enemy's territory and was afraid to march, so Gao Xianzhi asked Bian Lingcheng to lead 3,000 sick and weak soldiers to defend Lianyunbao City, and he led the army to continue to advance.

Three days later, the army marched to Tanju Ridge, more than 40 miles down the mountain, and in front of it was the city of Akuyue. The road of more than 40 miles is very difficult to walk, the sheep intestine path, rugged, right back and left turn, coiling thousands of turns, the road is mostly broken by streams and landslides, there is no way to find.

Hearing the report of the pathfinder soldiers, the soldiers showed a timid look on their faces, and they looked at Gao Xianzhi and did not dare to go down the mountain. Seeing this, Gao Xianzhi didn't say much and sent someone dressed in the clothes of the Hu people, pretending to be a surrenderer guarding the city of Abiyue and said: "The soldiers guarding the city are willing to surrender to the Tang Dynasty, and the rattan bridge on the water of the Suoyi River has been cut off. ”

The Suoyi River is weak water, the water in the river cannot float grass and trees, and the rattan bridge on the river is the road leading to Tibet. Hearing this, Gao Xianzhi made a very happy appearance and beckoned the soldiers to collect the fruits of victory, and the soldiers believed it and followed down the mountain.

Three days later, the soldiers forced into the city of Akuyue.

Those who know the times are Junjie, the Tang Dynasty soldiers pressed the border, and the defenders of the city of Ao Yue did not hesitate to open the city gate to meet the Tang army when the Tibetan aid was hopeless.

The next day, Gao Xianzhi led the army into the city of Ao Yue to rest and recuperate.

Gao Xianzhi sent the general Xi Yuanqing to lead more than 1,000 cavalry to explore the road first. And explained: "Xiao Bolu heard that the Tang Dynasty army is coming, their monarchs and people will definitely flee into the valley, you don't rush to attack first, you can call them out, take out the silk silk and say that it was given to them by the emperor of the Tang Dynasty, if the ministers come out, find a way to tie them up and wait for me to deal with it."

Xi Yuanqing found the valley according to Gao Xianzhi's reminder, and sent troops to set up a cauldron outside the valley, and the pork, beef and mutton were boiled in more than a dozen pots, and the aroma of meat drifted into the valley along the breeze. The people hiding in the valley and the little Bolu monarch were hungry and cold when they smelled the smell of meat, and their saliva couldn't help but swallow it over and over again.

Xi Yuanqing besieged but did not attack, and after the smell of meat wafted for two days, he sent people to shout outside the valley: "We are the army of the Tang Dynasty, and the emperor knows that you are short of food and clothing after returning to Tibet, so he specially ordered us to come to send you food and clothing, and there are also a large number of silk silks to reward your king's ministers, please come and receive them quickly."

Hearing this, the people in the valley were suspicious, and King Xiao Bolu and his ministers drove a group of people out of the valley and asked them to take the lead to find out the truth of Tang Jun's words.

When the people went out of the valley, although there were no exquisite grains, there was enough coarse tea and light rice, and one spoonful of pork, beef and mutton per person was many times stronger than the life in the valley. The people who came out of the valley wanted a stable and full stomach, and they were reluctant to go back when they came out, and the spies mixed with the crowd took advantage of the chaos to run back to the valley.

"My lord, five people are gone."

As soon as the spy left, a soldier came to report to Xi Yuanqing.

Xi Yuanqing nodded with satisfaction, and ordered loudly: "Yes, I ordered to go down and put the two carts of silk silk at the mouth of the valley, so that they can see enough!"

In the area on the edge of the valley, there were many people who were eager to try, and they saw that batches of beef and mutton and brocade clothes and silk were placed on the outskirts of the valley, and they were tempted, and the ministers were also itching, and it was not long before more and more people came out of the valley.

Finally all the ministers came out. Xi Yuanqing gave them an urn to catch turtles, and after a lot of calculations, it was still a little early, and the ministers of Xiao Bolu were arrested, but the king and the princess of Tubo fled into the grotto.

"Our Tang Army is a benevolent and righteous army, we will not let go of any enemy, nor will we wronged any good person, all those who advocate dependence on Tibet, I hope you can take the initiative to stand up, I will give you a lenient treatment, if I find out, there will be no good fruit for you to eat."

The ministers were all lucky, and no one was willing to take the initiative to stand up.

Gao Xianzhi also has a way to deal with this group of ministers, he has a list in his hand, a list of ministers attached to Tibet provided by an informant, in front of all the people and ministers, he took out the list and read more than ten names and said lightly: "There are a lot of people in the list, for the time being, deal with these diehards, and the rest, it depends on your performance."

After more than a dozen of Xiao Bolu's important ministers were beheaded, all the ministers and people present completely surrendered to Gao Xianzhi's coercion.

The news of the beheading of the important minister reached the ears of the little king of Bolu and the Tibetan princess in the grotto, which made them tremble, but they still held a glimmer of hope in their hearts, hoping that the Tibetan reinforcements would arrive in time to save them from the fire.

It's a pity that Gao Xianzhi didn't give them a chance, and on the same day, he ordered people to rush to a place sixty miles away from the city of Aguyue and cut the rattan bridge from Tubo to Xiaoboluguo. The vine bridge was the only passage from Tibet to the small Bolu Kingdom, and when the Tibetan reinforcements arrived, they just saw the vine bridge flash in front of their eyes and fall to the bottom of the cliff.

This rattan bridge is a bridge erected on the moat, the difficulty of building is not ordinary, it requires the cooperation of personnel on both sides, it took more than a year to build, without this bridge, the Tibetan reinforcements can only look at the ocean and sigh.

Under the operation of Gao Xianzhi, King Xiao Bolu soon learned that the rescue of the Tubo army was hopeless, and the monarch of the small country was like a grass on the wall, with resilience and very good at judging the situation, after knowing that he had no backup, King Xiao Bolu immediately took the Tubo princess out of the grotto and presented a letter of surrender to Gao Xianzhi.

After Gao Xianzhi captured King Xiao Bolu and Princess Tubo in August, he announced the withdrawal of his troops, returned to Lianyunbao in September, and returned to the Tang Dynasty border after the collection of three army horses.

At the end of September, when Gao Xianzhi led his army to Bomichuan, he couldn't hold back the joy in his heart, and couldn't wait to share it with the emperor.