Riyue Mountain, once the dividing line between the Tang Dynasty and Tubo, was the watershed of the water system in Qinghai Province and the outer basin and the natural dividing line of agriculture and pastoral areas.

In the past 2,000 years of imperial history, it has always been the throat and barrier of the mainland to Tibet. Therefore, it is known as "West Sea Screen" and "Grassland Gateway".

On the occasion of Jiaqing and Daoguang, the business of Tangar (now Huangyuan County) under the Sun Moon Mountain was particularly prosperous. The local chronicles once recorded: "Qinghai and Tibet are full of goods, and merchants and tourists from various inland provinces are divergent, and the annual import price is as much as 1.2 million taels", which was the most famous trading town in the northwest region at that time.

However, with the outbreak of the war in the Central Plains after the Xianfeng year, and with the riots of the Ganshan True God Cult, the Dangar mutual market has been completely cut off.

The Riyue Pass, which used to be a key pass in the northwest, was only used as a base for the Xining authorities to monitor the western Mongolian provinces.

After all, the Sun Moon Mountain is thousands of feet high, the soil and rocks are all red, and the red land is hairless, so it is impossible to garrison a large army.

In the early hours of the morning, on the Sun Moon Pass checkpoint, several dim lanterns swayed left and right in the howling of the night wind, and the drizzle was ticking down. In the dark night, the human eye can't see the three feet away. A few of the vigil thugs kept their heads hanging and dozing under the eaves.

Since the news came out a few days ago that the official army was going to attack Xining, a team of several hundred people rushed to the Riyue Pass. However, the main force mobilized by the Ma brothers still hoarded in Dangar City.

That's the real gateway to Xining.

Deng Kai followed behind the old butler Deng Tai, lurking in the darkness twenty paces away from the mountain pass checkpoint. Thirty or forty people were lying in the cold rain around him.

At an altitude of 3,000 meters, the temperature of the Sun Moon Pass cannot reach ten degrees.

But none of Deng Kai's group of people can't stand the cold. Energetic and sharp-eyed, they are the sharp knife team specially formed by Liu Xian in order to deal with the night fight and sneak attack battle that are very likely to occur in the war in Xinjiang.

There are less than 100 people in total, and every member is a practitioner.

And if there are people who know all the big and small families in Hanzhong, then he will be surprised to see many familiar faces among the members of the Sharp Knife Team.

Originally, these faces were all the nurses and teachers of large and small families in Hanzhong.

But there are still only a handful of people like Deng Kai who came from a wealthy background, personally selected into the Sharp Knife Team, and made up his mind to make a name for himself in the Qin army.

Deng Kai is Deng Yuzhang's second son.

After the defeat of the Chenggu People's League, Deng Yuzhang did not see people alive and dead like Li Danyang, but relied on his outstanding martial arts to get his life on the battlefield.

But after that, Deng Yuzhang no longer had the plan and energy to make a comeback. His ambition and pride all disappeared with the collapse of the previous militia of 3,000 Chenggu soldiers. It's just that Deng Yuzhang can bury himself, but he can't help but seek a way for his family and his son.

The rise of Liu Xian's comet is an opportunity.

No matter how deep Liu Xian's crisis seems to the people in the officialdom, in the eyes of Deng Yuzhang, a powerful county, Liu Xian, who is the commander of the official residence, has already towered into the clouds, and he can't look at each other.

As a result, Deng Yuzhang left his eldest son to inherit the family business. The second, third and fourth sons all voted for the Qin army, and when the sharp knife team began to be formed, the second son Deng Kai was allowed to run for election, and his housekeeper, Deng Tai, who also practiced martial arts, was also sent in, so that his son could take care of him.

The first detachment of the Sharp Knife Team followed the cavalry group all the way to the halfway point of Sun Moon Mountain. Then they all dismounted, with the Sharp Knife team in front and an infantry brigade behind, and felt for the mountain pass checkpoint.

The two battalions of the cavalry battalion took the opportunity to rest their horses, and after the infantry had succeeded in seizing the mountain pass, they had to quickly advance to the city of Tangar, which was more than thirty miles away.

-- Capture and defend two stone bridges over the Huangshui River outside the city.

Liu Xian didn't think that a small Dangar city would be able to stop his team. In his opinion, the threat of the city wall of Tangar is not as great as that of the Huangshui River, which is more than ten zhang wide.

Deng Kai's martial arts are quite good, but he is a pure rookie, he has never seen blood on his hands, and he can't be compared with Deng Tai at all. This is a character who was killed from the chaotic army with Deng Yuzhang.

Suddenly a few chirping sounds came into Deng Kai's ears in the dark, and Deng Kai suppressed the tension in his heart and began to move forward. In front of him, Deng Tai's somewhat vague figure looked very tall, giving Deng Kai a lot of confidence.

Dozens of Knife Squad soldiers touched the bottom of the checkpoint, and quietly erected several long ladders, the top of which was covered with thick cloth, and there was almost no sound when they leaned against the wall of the checkpoint, and the sound of their footsteps was muffled by the howling wind and ticking rain.

Deng Tai is the captain of Deng Kai's detachment, and he is a pioneer as a matter of course, he put the knife in his mouth and climbed lightly to the wall, Deng Kai followed him after a few steps, and the two quickly climbed the city wall with the sound of the ladder.

Deng Tai looked left and right at the top of the wall, there was a fire in the sentry room under the wall, and there was a faint sound of talking in the house, and there were several rioters sleeping against the wall outside. The knife in his mouth continued to be held, and he gently took off the sharp knife in his waist and touched the side of the sleeping rioters, Deng Kai followed him, and the others who came up from another long ladder also came to the other side, Deng Tai waved his left hand, and several people moved at the same time, jamming the necks of those rioters, and stabbing the sharp knife in their hands at their hearts. Several thugs were choked by the neck before waking up, most of them were killed in their sleep by these extraordinary sharp knife soldiers, even if they were lucky enough to not die for a while, and wanted to struggle, they were stuck in the neck by the sharp knife soldiers' iron pincer-like big hands and couldn't scream, no matter how big their eyes were, they could only watch these sudden enemies, little by little gathered on the wall, and then died silently.

Dozens of people climbed up the wall without alarming the people in the sentry room under the wall.

Then most of the Blademen crept down the wall, and there were only two signalers left at the head of the wall.

When the two dazzling fireworks burst out on a rainy night, there was no suspense about the capture of the Sun Moon Pass.

The gate of the checkpoint was opened, and the infantry brigade that killed it used bayonets and grenades to educate the rioters in the checkpoint barracks about how to behave in the afterlife.

In the entire outpost, there were more than 400 rioters, and Liu Xian only saw less than 100 prisoners, and he didn't say anything unusual.

In this battle, the expeditionary army is not only to eliminate the threat from the rear, but also to kill chickens and monkeys, and to be ruthless, doesn't it correspond to the theme.

The horses, which had rested for a while, rumbled over the mountain pass and slaughtered towards the city of Tangar.

Liu Xian personally led the troops, and the virtual map of neural transmission clearly showed that the two defenseless stone bridges on the Huangshui River -

Nearly all of the rioters were stationed in the city of Tangar.

Liu Xian, who was galloping on horseback, continued to figure out the terrain around Dangar City, and he was going to fight a war of annihilation in this battle.