When the Yuwen family in Guanzhong was competing with the heroes of the Central Plains, its military focus was on the dangerous mountains and rivers controlled by several passes. However, when the situation in the Guanlong area was chaotic, the situation in Guanlong was chaotic, the control of the situation in Guanlong depends on the control of the outer highlands of northwest Guanzhong. The heights in Guanzhong are the military focus of the Guanlong area and play an important role in the bottom of the situation in Guanzhong.

The northwest outer highland of Guanzhong is mainly composed of Longshan and extends to part of the Loess Plateau, roughly including Tianshui to the west, Pingliang, Qingyang to the east, and Yan'an. This area is relatively high, enough to overlook Guanzhong. It is easier to go from here to Guanzhong hinterland, but it is more difficult to attack from Guanzhong hinterland.

This area is mainly plateau mountainous terrain. Several major rivers in the hinterland of Guanzhong, such as the Wei River, Jing River, Luo River and its tributaries, all originate here, and converge centripely to the hinterland of the Guanzhong Plain. The low mountain estuaries formed by these rivers are the passage between the northwest region and the Guanzhong hinterland. After generational operation, some important military towns have been formed, including Qingyang, Pingliang, Guyuan, Jingzhou, Longxi, Tianshui, and Longzhou. On the one hand, these military towns play an important role in resisting the pressure of northwest ethnic minorities on Guanzhong, and on the other hand, they have a great impact on the stability of the situation in Guanzhong.

Qingyang, Pingliang and Guyuan are located on the Loess Plateau upper reaches of the Jingshui River Basin. From here, the road to Guanzhong is very easy to go through Jingshui River Valley. Since the Qin and Han dynasties, this place has been a major place to resist the invasion of the tribes in the northwest of Guanzhong. During the Western Han Dynasty, all of them belonged to Anding County. The county was named after Anding, which means that the stability of Guanzhong is connected here. The military book says that Qingyang "Southern Wei Guanfu, North Rush Qiang Rong. Qingyang has a police officer. But south of Bining, the disaster will be peeled off, and the body can be slow!"

It is called Pingliang "the mountains and rivers are dangerous and obstructed, and the border is controlled and the main one is to stand tall." It is called Jingzhou "the mountains and rivers are surrounded by water and land circulation. There is something happening in the north of the ridge, and the state is actually a tunnel.

At the end of the Sui Dynasty, the heroes competed for hegemony, the Yuwen family, Liu Wuzhou and Xue Ju heroes competed for Guanlong, which was an important position.

Longzhou and Tianshui cross the east of Longshan, standing on both sides of the west, controlling the road through Longshan along the Weishui River Valley. Longshan is originally the western barrier of Guanzhong. However, if a force is forced from Longxi to Guanzhong in the east, the situation in Guanzhong will be unfavorable, so the control of Longzhou and Tianshui is of great significance to the situation in Longshan. The military book says that Longzhou "brokes the dangers at the bottom of Long, controls Qin and Feng's clashes. It is an important town in Guanzhong." It is called Tianshui "when the meeting of Guanlong, Jieyong and Liang, it is a major town. Yu Yunwen said: Guanzhong is the upper reaches of Daxia; Longyou is the upper reaches of Guanzhong. And Qinzhou is the mouthpiece of Guanlong."

Unfortunately, these strategic areas were basically controlled by Xue Ju. Although there were countless wars between the Xu State of Yuwen and Xue Ju’s Western Qin, the two sides repeatedly tug-of-war. Even if they were powerful generals like Yuwen Chengdu and famous generals like Wei Wensheng, they could still be able to defend behind Longshan. In the competition between Guanzhong and Longyou, the strategic initiative was basically controlled by Xue Ju’s Western Qin. If Yuwen Chengdu had not damaged Western Qin severely, Chang'an might have fallen into Xue Ju’s hands.

To the west of Longshan Mountain, Longxi County is one of the main centers. Longxi was Longxi County during the Qin and Han Dynasties. It is known in history that "the wings cover Qin and Long, control and slam the Qiang and Rong. The land is full of disputes between valleys and rivers, and its customs are wise, and it is good at hunting, and it is a country that uses martial arts since ancient times. It is true that it farms and garrisons here and guards to fight. It goes east to Qin, Long, and Yong and Qi's shoulders and backs; it goes south to the steps, and then Liang, and Yi's throat is broken; it points to Lan, Hui, and He, and Huang. Gongchang is not a place where nothing is done. If you want to protect Guanzhong, you must first strengthen Longyou; if you want to strengthen Longyou, Gongchang is not a place where the city is!"

Directly north of Guanzhong, there are two barriers for its protection, from Yan'an, Suide to Yulin, Lingwu in the west, and Yellow River in the east, and Shanxi in the east, which is the first level; from this to the north, it crosses the Hetao area to block the Yellow River, which is the second level. Yan'an, Suide to Yulin in the area of ​​Shangjun, which is the area of ​​Shangjun during the Qin and Han dynasties. Qin and Han dynasties resisted the Huns and the Northern Zhou Dynasty defended against the Turks, which are all important defense areas.

The above is the general situation of the geographical situation in the northwest of Guanzhong. This area is full of plateau mountainous terrain, with a high terrain, which is the center of military focus of Guanlong. It is of great significance to the security of Guanzhong and the control of the military situation in Guanlong.

At the end of the Sui Dynasty, the center of the world had already transferred from Chang'an to the eastern capital Luoyang.

When the building was about to collapse and the heroes from all directions rose up, the land of Guanlong was also surging.

Guo Zihe raised an army in Yulin, Zhang Changxun raised an army in Wuyuan, Liang Shidu raised an army in Shuofang, Xue Ju raised an army in Jincheng, Li Gui raised an army in Wuwei, and Zhou Zhao occupied Shangluo.

At that time, Wei Wensheng, a place in Guanzhong, was left behind. At first, Wei Wensheng did not have the will to be independent. Yang Guang was surrounded by Yanmen, and he raised the troops from Guanzhong to go north to serve the king. Finally, when Yang Guang was critically ill, all forces fought in Hedong. Wei Wensheng, Yu Wenwen and this Guanlong force representative retreated to Guanzhong to establish a small court, he had already missed the best opportunity.

Although they eventually established the small court under the name of Yang You and unified Guanzhong, the places like Longshang and Longyou all fell into the hands of other heroes.

With the dangers of the four barriers in Guanzhong, although he barely maintained the land of Guanzhong, he suffered many disagreements when he expanded externally. In the final analysis, it was because of his innate shortcomings that all the strategic areas in Guanzhong were in control of other people's hands and were at a disadvantage.

After Yu Wen and became emperor, he wanted to take Guanzhong as the center countless times, then sweep Long Shang and Longyou, and then use Guanlong as the foundation to gain Long and look forward to Shu, pacify Hanzhong, and swallow Shuzhong. At that time, the rear was stable, and you could go out of Hedong in the north, go south to Jingxiang, and go east to Central Plains.

However, although this strategic layout is good, several years have passed, and it has only barely maintained the stability of Guanzhong, but it has not been able to take half a step in expansion. It has always been limited to the plain of Guanzhong.

This is a dead end, and the disputes in the world are gradually getting fierce. Every day, the unity of the world is approaching one point. All forces fight and merge with each other, but Guanzhong has no change. This has always been a place that makes Yu Wen and his heart uneasy.

If you break the deadlock, only if you break the deadlock can you have a glimmer of hope in Guanzhong. But how can you break this deadlock?

The land of Guanzhong has a high house and a feather for building a feather for the Central Plains and Shu Han, and the viewing is to look down. Correspondingly, the land of Longshang, Longyou and Hexi also has a slight view of Guanzhong. If this problem is not solved, Guanzhong will always be in a dangerous deadlock.

It is precisely because of this that Yu Wenji is so enthusiastic about the Eight-Nation Alliance and is eager to secretly form another alliance. Everything is just to break the deadlock.

Before, Yu Culture and Li Gui, who had always had better positions than Hexi, were because Xue Ju of the Western Qin Dynasty had a strategic advantage in Guanzhong, and Hexi was the same in Longxi. At that time, he devoted his hopes to Li Gui, hoping to use Li Gui to break the deadlock. Unfortunately, although Li Gui occupied Hexi, although the territory was large, it was still a poor and deserted place in the border. He had few soldiers and few generals. In addition, Li Gui was a little rich and was at ease, and he did not want to make progress, so he had no desire to be a king or domineering.

With his scheming, although Xiliang and Xiqin fought several times, the result was just lukewarm, and it was completely another deadlock.

This deadlock has been too long, so long that Yu Wenhua, who has always been patient, has lost his patience.

Fortunately, the time to break through is finally coming.

The army of the three kingdoms of Xiaoguan City, Xu, Later Zhou and Western Qin, have arrived one after another, and 100,000 troops and horses are crowded with a huge Xiaoguan. The food and grass from Xiliang are also being transported into Guanzhong, or to Hedong. The journey is too far and unpaid. However, Li Gui was not very willing to send troops this time. In addition, the Tuyuhun tribe in the northwest is about to move, and it seems to have plans to restore the country. In the southwest, the war between the tribes on the plateau has ended, and a powerful tribe has become the final winner.

Although separated from the plateau, Li Gui still felt this newly rising power. In addition, the Ili Khanate in the northwest seemed to have the ambition to restore the country with the support of the Turks. For a time, the pressure around Hexi, which was surrounded by wasteland, doubled.

Xiliang dispatched troops everywhere. He had no spare energy to send troops to join the coalition forces. However, Yu Wen and the Turks were of course unwilling to let Li Gui go. At this time, either a friend or an enemy. If they don’t join the Allied forces, it means being an enemy with the Allied forces. In the end, Li Gui had no choice but to use 100,000 stones of food and grass and one million guan of money to settle the matter.

Fifty thousand army, 30 thousand Later Zhou army, and 20 thousand Western Qin army have arrived in Qi. This time, the four northwest countries have 100,000 coalition forces, Yuwen Chengdu is the marshal, Liu Wuzhou's confidant general Yuan Junzhang is the marshal of the coalition army, Xue Ju's subordinate general Luohu is the chief of the army, and Li Gui's minister of the Ministry of Revenue An Xiuren is the military advisor of the coalition army.

At this time, all the troops and generals of various families had arrived, but Marshal Yuwen Chengdu did not come because he guarded Tongguan. The coalition was temporarily commanded by Wei Wensheng. After the food and grass were all arrived, Wei Wensheng led him to Tongguan and then handed over to Yuwen Chengdu. He succeeded to the position of General Tongguan.

Chen Kedi, who was a hundred miles away from the Longshan Mountains, had already grasped the situation clearly. In the past few days, Chen Jun had arranged a large number of scouts to infiltrate into Xiaoguan City, and had a very clear understanding of the various intelligence in Xiaoguan City.

Now, everything is ready, only the east wind is not available.

The night was dark, and Chen Kedi couldn't sleep at night in the camp in the valley forest. He tossed and turned. At the end, he simply sat up, lifted up the tent, sat under the tree, blew the cold wind, and looked at the moonless starlight.

A rustling sound came from behind. Chen Kedi looked back and saw Hu Hai, Xu Shiji, Su Lie, and Shan Xiongxin.

"Can't sleep?"

"Yes, you can't sleep either?"

"Haha, it's already this time, I can't sleep. I'll just wait until tomorrow is dark. I'm full of excitement at this time, but I can't sleep." Hu Hai smiled.

"Worried?" Chen Kedi asked softly. Although he was the main general, he was still very polite to other generals. After all, anyone is more qualified and older than him.

Hu Hai grinned, and under the slight moonlight, his face was full of indifference. "What are you worried about? But today's scene reminds me of when I was in Liaodong. I remember that it was also night. His Majesty returned from the Central Army camp with Marshal Li Benlei on his back, and then told us very seriously. He said that Your Majesty had an order to let us stay in Liaodong as the rear of the entire army and stay in Liaodong for half a month. Haha, at that time, there were only 3,000 people in the Pojun camp, and Liaodong was the territory of the Goguryeo people. There were tens of thousands of enemy troops in Liaodong City ten miles away. However, none of the brothers were afraid at that time, and all their hearts were full of passion!"

Chen Kedi smiled and said, Yes, how could he think so? Who is Hu Hai? Even if he is temporarily exiled, he is also the Yuan Zuo around His Majesty. Since the rebellion in Liaodong, he has experienced many wars, many times of life and death, and bloody battles. How could such a person be worried? Looking at the other people around him, who is not a fierce general in a hundred battles? I'm afraid they are not worried at all now, but excited.

"My horse spear is already hungry and thirsty!" Shan Xiongxin, who had been silent in the night wind, suddenly said.

The night breeze is blowing, the frost and dew are slightly cold. The thick black clouds are pressing against the top and are about to destroy them. The sentry standing guard in the distance, the spear in his hand is as firm as steel. Along with the horse beside him, he is silhouetted by the stars to form a masculine and strong image.

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Chapter completed!