In Shanzhou City, the people captured by the Tubo army from the Longyou prefectures and a large amount of grain and grass materials are gathering in this largest city in the Hehuang Valley from all directions.

On a mountain beam not far from the city, Zhang Yun watched a slowly approaching procession in the distance, the team was about thousands of people, all Han people, helping the old and the young, staggering, everyone's eyes were full of fear and despair for the future, they were going to be escorted to the plateau as slaves, and they could never return to their hometowns.

The Tubo cavalry next to him looked coldly at these Tang slaves with leather whips in their hands, and if anyone showed the slightest sign of disobedience, the leather whip would be whipped down mercilessly.

Zhang Yun looked at the people who were staggering, and then looked at the sky, it was getting late, there were still twenty miles away from Shanzhou City, and they would definitely not be able to arrive before dark, and the Tubo army would not allow the people to continue marching after dark, so it would be easy to escape, and they would definitely gather them together and wait for dawn before leaving.

At this time, Zhang Yun made a decision, he wanted to lead his subordinates to blend in with the people and enter Shanzhou City, and there was an opportunity in front of him.

He called ten of his men, whispered a few words to them, and gave them all their armor, weapons, and horses, while the remaining ninety soldiers changed into the clothes of the common people, and ran down the hill in separate ways, and when it was dark, it would be easier for them to blend in with the ranks of the people.

At dawn the next day, the ten soldiers who stayed behind saw from a distance that the ranks of the common people who had slept all night began to get up again, each munching on a dry wheat cake as hard as a stone, and marched with difficulty to the city of Shanzhou, twenty miles away.

The soldiers did not notice anything unusual, nor did they see the leader and the other brothers, who must have mixed in.

Ten soldiers made a detour down the mountain and hid in the col with their horses, and they could only leave the place until it was dark again.

..........

According to the agreement of the Tang and Tibetan alliances, the Tang army and the Tubo each controlled half of the Dadou Tugu Valley, the northern section controlled by the Tang army was relatively open, and there were pastures more than ten miles wide, while the south controlled by the Tubo was about 20 li, all of which were narrow mountain roads, although there were many dangers, but they could not accommodate many soldiers, at most dozens of people, but there were three military cities that could accommodate more soldiers, which were called Xiaotiantai, Liren Fort and Tianshi City.

The largest military city is the Lion City, with 2,000 soldiers and a large amount of grain and grass stored here.

In fact, as long as the Heavenly Lion City is captured, the other castles in Tubo will not be able to hold it, and they will lose food and material supplies, and in the end there will only be a dead end.

Not far from the dividing line between the two sides, there are two small forts in front of it, which act as a guard post, and once a battle breaks out at the guard post, the 2,000 defenders of the city will immediately enter a state of war.

When Guo Song arrived at Dadou Tugu, the Tang army had already launched an attack, forcibly uprooted two small forts, and annihilated more than 100 enemies.

When Guo Song arrived at the Great Dou Ba Valley, all the generals came to greet him, Guo Song waved his hand and asked, "How is the situation in Tianshi City?" ”

Luo Daxiao bowed down and said: "Envoy Qi, the Tubo army in Tianshi City is very vigilant, and they have invested heavy troops to defend the city day and night, the terrain there is dangerous, and it is indeed easy to defend and difficult to attack. ”

"Let's take a look!"

The generals surrounded Guo Song and ran towards the valley of Dadouba, and soon they arrived at the boundary of Tang Fan, and walked forward for three or four miles, far away, a solid stone city appeared on the mountainside, just choking the southward passage, the passage under the city is very narrow, as long as a dozen boulders are thrown, the road is blocked, at this time, the southward road has been blocked by countless boulders.

There is a very narrow passage to the north and south of the city, but the passage used to transport supplies is built on the north side, which means that this Tianshi City was actually built by the Tang army.

Luo Daxiao couldn't help but scolded: "Those fools in the imperial court actually assigned the most dangerous castle to Tubo, and I see that their heads have been kicked by donkeys." ”

Guo Song looked at the top of the city again, and above the city was a steep and straight mountain, and I was afraid that even the apes would not be able to climb it.

"Didn't the Tang Army find a hole in its defenses when they controlled this castle before?" Guo Song asked again.

Luo Daxiao recruited a lieutenant forward, before he led five hundred soldiers to defend the city, the lieutenant was called Chen Li, he bowed down and said: "Qi Yu envoy, there are indeed loopholes, that is, there is no water source, we used a huge tank to store water, which can be used for four months at a time, but we only have five hundred soldiers, and now the other party is two thousand people, if you save well, you can use it for one or two months." ”

Guo Song nodded, and asked Luo Daxiao again: "Is there a plan to attack?" ”

Luo Daxiao sighed, "Qi Yu envoy, the city is steep, and the mountain below is at least twenty zhang high, and the siege ladder cannot be placed under the city wall, so we can only attack from the foot of the mountain, but we don't have such a long siege ladder, or take the north-south separate road for feeding, but there only a dozen soldiers and a pile of rolling wood and stones can block the mountain road, if you force an attack, the casualties will be too great." ”

"I know, go back to the camp first, there will always be a way to take it!"

The generals returned to the camp, and the Tang army camp was also in the Dadouba Valley, just in the pasture in the valley, where more than a dozen Qiang herdsmen lived.

Walking to the gate of Daying, Guo Song took out a piece of jade pendant, handed it to the two soldiers and said: "You immediately go to Jiedan County, there is a Taoist temple in the northwest corner of the county, called Xuanwu Temple, you find the master of the temple Chunlei Zhenren, tell him that I need his assistance, please come to Dadou Tu Valley immediately." ”

"Obey!"

The two soldiers turned on their horses and galloped away.

Li Bing said with a smile: "I know that the Spring Thunder Daoist is also a disciple of the Li clan in Hexi, a very eccentric person. ”

Li Bing was also born in the Hexi Li family, but the Hexi Li family is very large, with many branches, distributed throughout the Hexi Corridor and Longyou, and it is normal for the children of the same clan not to know each other.

Guo Song smiled, "He is one of my senior brothers, he was seriously injured, I rescued him, and he has been recuperating in Xuanwuguan, and now his injuries should be healed." ”

"Can he take the Lion City?" Luo Daxiao next to him asked.

Guo Song shook his head, "He came to assist, and the grasp will be a little greater." ”

..........

At the same time that Guo Song was actively preparing to attack Tianshi City, 6,000 Tubo troops had already reached Jincheng County, Lanzhou, and the general Lun Ruze led the army into the county seat, to his surprise, Jincheng County turned out to be an empty city.

Not only did the people flee, but the official warehouse and the armory warehouse were empty, which made the argument angry and angry, and their target was nearly 1,000 skilled craftsmen in Jincheng County who made weapons, as well as a large number of armor and weapons in the armory, but the people were gone, and the armor was nothing.

On Lost Ze kicked over an empty barrel fiercely, and said viciously: "Search the whole city for me!" ”

After a while, the soldiers captured an old man who did not want to leave his home and did not flee with the people.

On Lost Ze grabbed the old man's shirt, gritted his teeth and asked, "I only asked you once, where have all the people in the city gone?" ”

The old man was so frightened that he trembled and said, "It's ..... Cross the Yellow River and go to Liangzhou! ”

"All of them went to Liangzhou?"

The old man nodded, threw him to the ground and shouted, "Go to the Yellow River!" ”

Six thousand soldiers followed him, mightily rushed to the bank of the Yellow River outside the northern city, they had only crossed the Yellow River in Jishi Mountain to kill Lanzhou, but they did not expect that the people of Jincheng County actually crossed the Yellow River to the north, and knew that they did not have to cross the Yellow River at all, and killed directly from the Hehuang Valley to the north bank of the Yellow River.

The banks of the Yellow River littered the banks of the Yellow River with cages and other items that could not be taken away, but there was no trace of a single person in sight, and the other bank was empty and empty.

"General, we also brought a raft!"

A general whispered, "Do you want to cross the river and pursue?" ”

On Lost Ze pondered for a moment, and resolutely ordered: "Order the army to cross the Yellow River!" ”

After a long-term tug-of-war between the Tang army and the Tuyuhun army, the population of Longyou itself is not much, and the hundreds of thousands of people in Shanzhou and Lanzhou account for nearly half of the entire population of Longyou.

Six thousand Tibetan soldiers blew their rafts and rowed towards the opposite bank, the Tibetan soldiers were all infantry, they were six people on the raft, one person sat at each end, two people on each side, the soldiers at both ends were responsible for guarding, and four people on both sides rowed.

After a short time, the Yellow River was densely packed with small dots, and half an hour later, the first batch of more than 1,000 Tibetan soldiers was about to land.

At this moment, two thousand Tang cavalry suddenly appeared on the north bank, rushing towards the shore like lightning, and they opened their bows and arrows in the gallop, and the dense arrows shot at the rafts of the Tubo army.

The rafts of the Tibetan army are deflated and folded and carried around, and the raft is not used as the bottom plate, the safety factor is very low, the soldiers must maintain balance at any time after sitting on it, and they are most afraid of fire and bows and arrows, although the Tibetan soldiers raise their shields to resist, when the target of the Tang army is not them, but the rafts under them.

An Rengui said sharply: "Shoot now!" ”

The cavalry of the Tang army no longer galloped, but lined up in a formation several miles long, and they opened their bows and arrows and shot at the hundreds of forward rafts of the enemy.

'Whoosh! Sou! The arrows came quickly, and the rafts were shot through, and quickly began to leak air and water, and the Tibetan soldiers shouted in horror and desperately paddled to the shore, but without paddling a few steps, the rafts lost their balance, and then overturned three times in a row, and the soldiers fell into the water one after another, and two thousand Tang cavalry released arrows into the river on the shore, and the Tibetan soldiers were constantly shot, and blood came out of the river.

Many soldiers climbed ashore, but were mercilessly assassinated by the Tang cavalry on the shore, and the corpses were picked into the water with spears.

Seeing that the situation was not good, the Tubo soldiers behind turned around and rowed towards the opposite bank.

In less than half an hour, more than 1,300 of his forwards were either shot by the cavalry of the Tang Army, or dragged into the river by heavy armor and drowned.

After the Tang cavalry completely annihilated the enemy's front, they turned their horses and galloped away.

Tubo did not dare to cross the Yellow River again, so they had to collect their troops and go to Lintao.