Chang'an City in the Han Dynasty was built on the basis of the Zhou and Qin dynasties, combined with the auspicious celestial feng shui and rebuilt.

Therefore, this Chang'an City is constructed from south to north, the whole is irregular square, and it seems that the square lacks the northwest corner, and the south city wall presents the six-star structure of the Southern Dipper, and the north city wall presents the seven-star structure of the Big Dipper.

In the south of the west wall and the west of the south wall of Chang'an City, there are two Doucheng areas that bend outward, which are actually extensions of the palace area.

The whole Han Chang'an City covers an area of about 36 square kilometers, it is said that the population in the city is more than 200,000 at the peak of the time, there are "eight streets and nine mo, three palaces and nine mansions, three temples and twelve gates, nine cities and sixteen bridges" said, the layout of the avenue and the palace in the city is a chessboard pattern parallel to the city wall.

The south of Chang'an City is precious, so the southern area is mainly where the palace of the Son of Heaven is located, such as the Changle Palace in the southeast of the city and the Weiyang Palace in the southwest were the places where the Son of Heaven listened to the government in the Western Han Dynasty.

Then it spread from south to north, first the other royal palace areas, then the areas where Chang'an officials and aristocratic families lived, and finally to the north of the city, which was the residential area and market area of ordinary Chang'an residents.

It is said that the ordinary residents of Chang'an at that time were divided into 160 Luli, and the market also has the saying that there are nine cities in Chang'an, which shows its prosperity, but unfortunately all this has become a historical thing.

After Dong Zhuo moved the capital to Chang'an with the Son of Heaven, Chang'an City experienced nearly ten years of Xiliang Disaster.

It can be said that when the Xiliang Rebellion Army was fighting for Chang'an, except for the residences of the Son of Heaven such as Changle Palace and Weiyang Palace, which were not easily occupied, other areas of Chang'an City completely became the place where Xiliang Iron Cavalry put their horses.

For example, Guo Yan and Li Dao, the Xiliang warlords who seized Chang'an, although they did not dare to blatantly live in the palace of the Son of Heaven, but the mansions of those officials and families in Chang'an City were able to occupy without any psychological burden.

In addition, when Emperor Han Xian returned to Luoyang, he took away a large number of officials, and most of the mansions of the original officials and aristocratic families in Chang'an City were actively abandoned, so these mansions and deep mansions that originally had high-walled compounds happened to become the fortresses in the city occupied by the Xiliang Rebellion Army in Chang'an City.

But with the mutual attack of the Xiliang rebel armies on all sides, not to mention the mansions of court officials and the mansions of the great families, even the original Changle Palace and Weiyang Palace, which were the palaces of the Son of Heaven, had actually been almost destroyed in the war.

War is often accompanied by the destruction of civilization, and most of the palace buildings in these years are mainly made of wood, which is easy to be burned by flames in the war, so after the Son of Heaven left Chang'an, the Xiliang Rebellion Army that stayed in Chang'an City was even more unscrupulous.

As a result, in the war, Chang'an City has actually become an abandoned city.

Therefore, in the later period of the Guanzhong turmoil, the warlords who seized Chang'an, such as Guo Yan and Li Dao, no longer lived in Chang'an City, and they looked for some strong dock forts outside the city to live in, which allowed them to have a better sense of security.

At this time, Chang'an City has already been in the melee, and has been destroyed into a dilapidated city that anyone can enter and exit, although you can still see the towering city walls of the old imperial capital, not to mention that the gates everywhere are gone, and the doors can be closed, that is, some city wall areas have collapsed, and they can not resist the random passage of the Xiliang cavalry.

In such a chaotic situation, the residents of Chang'an, who originally lived in the north of the city, had already left in order to escape the war, either to Shu or to Jingzhou.

The Eastern Han Dynasty originally took Luoyang as the imperial capital of the Han Dynasty, and Chang'an was already a city that had taken a back seat, without the glory of the past.

Previously, Dong Zhuo took Emperor Xian of the Han Dynasty and forcibly coerced the people of Luoyang to migrate to Chang'an, which can be regarded as recovering some of Chang'an's popularity, but with Dong Zhuo's death, the turmoil in Chang'an began, and the population of Chang'an quickly lost and withered.

Therefore, the current Chang'an City has long been ten rooms and nine emptiness, and it is difficult to see the existence of ordinary people, and only the soldiers of the army and the strong men who are coerced by the army can be seen in the city.

In fact, Chang'an City, which has become an abandoned city, was originally not paid much attention to by Ma Teng and Han Sui.

In addition, Ma Teng and Han Sui have become enemies before, and after several battles with each other, they don't even have the intention of staying in Chang'an City, and the forces stationed in Chang'an City before are just two small forces of Zhang Heng and Liang Xing who are dependent on Ma Teng.

Now it is also because of the news of the attack of Zhu Wei's army that Han Sui and Ma Teng have returned to Chang'an City with their troops, preparing to meet Zhu Wei's army.

But it is naturally impossible for them to abandon their previous suspicions, but they each occupy an area in Chang'an City, and to be honest, they did not fight directly with each other, and Zhong Xuan, who had fled to Chang'an, took the lead in making peace, so that there was no civil war now.

On the surface, under Zhong Xuan's peace, Han Sui and Ma Teng seemed to have the intention of uniting against Zhu Wei's army.

But in fact, it is impossible, Chen Qun, the messenger of Ma Teng on behalf of Zhu Wei, is still in Ma Teng's army, although he has a sense of being held hostage and unable to leave, but he can still persuade and influence Ma Teng's mind by Ma Teng's side.

Therefore, under the influence of Chen Qun, Ma Teng's mind was naturally swaying from side to side, and the enmity between him and Han Sui was already difficult to erase, and it was by no means easy for Zhong Xuan to be a peacemaker and match them together.

It's just that in Chang'an City today, Ma Teng's side includes Zhang Heng and Liang Xing's two small forces, with a total of nearly 20,000 troops, and Han Sui also brought five subsidiary forces, including candidates, Cheng Yin, Li Kan, Cheng Yi, and Ma Wan, and his side has a total of nearly 40,000 troops.

At the same time, most of their troops are mainly cavalry, and it can be said that their subordinates are basically composed of Qiang herdsmen and Xiliang horse thieves, so they may be very chaotic in terms of discipline, but they are still not to be underestimated in terms of combat effectiveness.

To be honest, now Zhu Wei's Jingnan battalion and Zhang Xiu's and Zhang Liao's tiger wing battalions add up to more than 30,000 troops, if you really deal with the combined forces of Ma Teng and Han Sui, it is a bit enough, in fact, even if it is only to attack Han Sui's side, there is a gap in numbers.

Fortunately, the two sides do not need to conduct siege warfare in Chang'an, and it is basically similar to a field battle, and the real combat strength of both sides.

At the same time, there was also a news from Ma Teng's side, that is, if Zhu Wei's army only attacked Han Sui, Ma Teng could watch from the sidelines, but now it is impossible for Ma Teng to throw himself on Zhu Wei's side.

This news is not good or bad, after all, it is doubtful whether Ma Teng's promise is credible.

However, since Ma Teng has such an expression, it also makes Wei Yan, Zhang Xiu, and Zhang Liao focus on strategy and tactics, except for Zhang Xiu's weaker foundation among these three, Wei Yan and Zhang Liao all have a general background, so they quickly formulated the Chang'an strategy.

Therefore, after the armies of Wei Yan, Zhang Xiu, and Zhang Liao converged, they fearlessly advanced from Huayin along the Weishui line to Chang'an, and soon approached Hongmen, which was not far from Chang'an City......