In the midsummer of the thirtieth year, Pei Du, the chief administrator of Yanyou Dao, died in battle, and in the winter of the same year, the prefect of Qingzhou Prefecture was martyred. When it snowed heavily, it didn't stop for several days, Yan Youdao soldiers, grief-stricken, the whole army was vegetarian, and the carriages and horses were all hung with flags.

A few days later, the bad news came to the imperial capital, the government and the opposition were sad, the Son of Heaven wept, and he didn't think about tea and dinner. When the people of the Central Plains heard the news, they spontaneously bowed to the north to respect the heroic soul of the country.

In addition to the grief, the emperor received an urgent report from the west, knowing that the west was in danger, he endured his grief, and urgently summoned the former deputy general Pei Du, who was now promoted to the general of the auxiliary state because of Yan You's military merits, and ordered him to lead the army to the expedition to rescue the west and defend the land and attack Hu.

The general of the auxiliary country was ordered to immediately send troops to the expedition, and went to the west with his family.

The emperor himself climbed to the head of the city, saw the army, did not feel the tears, heartbroken, said: The third son of Jinmen, now the second of them has died, Yan You was initially decided, and the thief gave the head, all of which relied on the ministers of Bandang to forget about the outside, and the loyal people fought bloodily. Now, the western border is in danger, the strong enemy is coming, the three sons are only one Feiyu, I must not lose the loyalty of the good generals, the pillar of the country, otherwise, I will obey the will of heaven, guard the country and look up to the kings, miss like a broken sibling, I am difficult to settle down......

The accompanying officials all knelt on the ground, inspired by the emperor's benevolence, and wept one after another.

The general of the auxiliary country came to Chang'an, judged the situation, and after several scheming, it was decided that the army would be divided into four ways to fight the invading enemy from all directions.

At the beginning of the turmoil in the western border, there were righteous armies in all directions, all of which were for self-preservation, and then there was one, which became more and more courageous and became more and more powerful. Bai Feiyu, the general manager of Ganliang Road, heard his actions and admired him very much, so he invited him to be handsome and make a big plan.

After the rebels accepted Zhao'an, they moved to Kunlun, where they were defeated and retreated, suffering heavy losses and a sharp reduction in soldiers.

Tubo took the opportunity to make a detour to attack Chang'an, besieged the city on all sides, and attacked it day by day, but Chang'an City was high and deep, united as one, under the command of the general manager of Ganliang Road, held on for several days, however, the grain and grass were becoming less and less good, the weapons were damaged, it was difficult to supply, the combat power was greatly reduced, and the people were panicked.

Helplessly, the letter for help that had already been sent out by 100,000 people in a hurry was like a mud cow into the sea, and there was no news, and the general of the auxiliary country did not know where to go.

In the end, Chang'an held on to half a month, because it was difficult to support, was broken by the Tubo army, the city will be broken, the general of the auxiliary country led the army to arrive, the enemy army was unprepared, suddenly chaos, the general led the army to storm the enemy, the enemy army was defeated, the rout fled, however, the city has been broken, the Tubo barbarians, regardless of humanity, the heart of the jackal, the people of half the city died tragically under the Tubo sword soldiers, the blood flowed into a river, the heaven and the earth wept, the prosperity of Chang'an City has disappeared since then, desolate.

When the general recovered Chang'an, the righteous army got rid of the entanglement of Kunlun's enemies and arrived on the back foot.

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