Eight hundred miles of Qinchuan is the Qinling Mountains in the south, and there are Beishan Mountains in the north, which are facing the Qinling Mountains. There are eight rivers irrigated by the vast fertile plains demarcated by these mountain boundaries, and it is because of various strategic and economic favorable conditions that this place has been favored by successive monarchs since ancient times - Zhou, Qin, Han, Western Jin, Former Zhao, Former Qin, Later Qin, Western Wei, Northern Zhou, and Sui all built their capitals here.

In fact, Chang'an is also known as Daxing, it is the capital rebuilt after the establishment of the Sui Dynasty, until it is really built, but more than ten years in history, the Tang Dynasty built and expanded, making it more magnificent and magnificent.

Now Chang'an City is composed of three parts: Waiguo City, Palace City and Imperial City. Miyagi and Imperial Castle are located in the northern part of the capital, and the various squares in the outer Guocheng are guarded from the left, right, and south sides. With the Zhuque Street in the middle as the boundary, the east and west belong to the two counties of Chang'an in ten thousand years.

The palace city and the imperial city were the residences of the imperial family, and the Guocheng was the place where the people lived together, and each had its own layout.

Thousands of homes are like Go games, and the 12th street is like planting vegetable fields.

Chang'an Guocheng has a total of 11 streets in the north and south and 14 streets in the east and west, crisscrossing the interior of Guocheng, dividing the interior of Guocheng into 110 squares. The most spacious is the Zhuque Street of Luoyang Heavenly Street, which is forty zhang wide, and its scale can be imagined, and it is indeed the first city in the world.

Zhang Xuanning entered the city, it was nearly dusk, and the street was long and long, and I walked a few more moments, only to see that the city was prosperous and prosperous, and the various houses had been lit up, reflecting the nearby streets, bright as day, and the four main streets with a well-shaped layout were full of shops from all walks of life, in addition to selling local products and department stores, other treasures were also available, and there were wine shops and restaurants on both sides. The pedestrians shoulder to shoulder are not lively.

Zhang Xuanning squeezed into the flow of people pushing forward and back, as if stepping in a dream, this ancient imperial capital is at his feet, so luxurious and magnificent, even people from the future are shocked, not to mention the outsiders from Siyi in ancient times.

At this time, it was already February of the eleventh year of the great cause, and the time was extremely urgent, and it was only a year and a half before Emperor Yang of Sui moved to Jiangdu (that is, Yangzhou).

Of course, the battle of Yanmen should also be coming, whether according to history or according to the book, the reason is very simple, five years ago, the Sui Dynasty was extremely strong, five years after the great cause, the Turkic Qimin Khan died, and Bi Khan was the beginning. After several years of painstaking management, Shibi continued to grow stronger, so he no longer entered the court.

In August of the eleventh year, Emperor Yang went out to the north to tour. Shibi Khan led the army to attack, which was determined by internal and external factors, and it had a certain degree of irreversibility, and Zhang Xuanning waited at this time, then smiled at this moment, took out some broken silver, walked towards a person, and asked with a salute: "This is my first time in Chang'an, can you please show me the streets, and this silver will be used as a reward." ”

As he spoke, he had a confident look on his face.

The man was originally impatient, but when he saw the silver, his eyes lit up and he said: "Oh, we Chang'an people like guests the most, so I'll introduce you to the streets of our Chang'an, but you can't walk all night." ”

"It doesn't matter, you can walk as much as you ask, I'll ask you how much you can go. Zhang Xuanning smiled and said that he had decided to spend half the night like this.

It's the drums of the night again.

At this time, Chang'an was still in the hands of the Sui Dynasty, although there were patrols, but there was absolutely no special surveillance later.

Suddenly disappeared from the secret ship in Luoyang, and then left overnight, and went around for a month around the circle, hundreds of miles before going up to Chang'an to open its treasure.

Under the moonlight, there was no one around, Zhang Xuanning stared silently at the long night, and there were many battles to be decided.

Yong'an Canal is connected to the north of the water skiing and is the largest artificial canal connecting the north and south of Chang'an City...... The prancing horse bridge spans the upper part of the bridge body, with carved and delicate stones, the big arch is built like a rainbow, the span reaches more than ten zhang, the military horse road that is sandwiched by the people on both sides of the row can accommodate four cars in parallel, and on the shoulders of the big arch and two small arches are built on each other, which is conducive to drainage and can reduce the burden of the big arch, and the ingenious cooperation makes the bridge body light and beautiful, the ramp is eased and the shape is excellent.

The stone railing on the bridge is carved with a bas-relief with a cloud dragon pattern, and the six pillars in the middle are different from other pillars, which are six stone dragon heads that overlook the bridge.

Zhang Xuanning knew that Yang Gong's treasure house might be an underground fortress, which could be attacked and retreated, and all entrances and exits were closed before the mechanism was activated, so if he didn't know the inside story, he would still not be able to touch the shadow of the treasure house if he turned Chang'an over.

Zhang Xuanning took a deep breath and stared at the six dragon head pillars, then turned down the bridge railing, and absorbed the power under the bridge with internal energy, gathered his eyes, looked at the bottom of the column, and sure enough, there was a faint circle of joints between the column and the bridge body.

The heart jumped straight and he gritted his teeth, and Xuan Gong pushed his thumb against the center of the circle with a soft sound, and the cylinder sank upward, turning into a recess as deep as two inches.

Although he knew this, Zhang Xuanning was still shocked all over his body, and with his cultivation, he also felt that it was difficult to breathe.

After a few minutes of silence, he suddenly moved, and found the other five button locks as quickly as possible, according to the start of the book, and then turned over and returned to the bridge without hesitation, and then held a dragon head, and pulled up the dragon head by nearly two inches, and did not hesitate to move to the right, and the dragon pillar turned a circle, and when Zhang Xuanning let go, the dragon pillar was in its original position, and it was indeed no different from before.

Zhang Xuanning opened the other five dragon pillars one by one according to this method, and in the twist, he felt a slight shock, and when he looked under the bridge, he saw strange ripples on the river surface at the bottom of the bridge, and bubbles bubbled up.

However, these phenomena are not boiling, and the time is also very short, if you have a heart, you can pay attention to it, but if you have a mental calculation, it is not a problem at all.

The mechanism has been opened, but according to the original memory, the entrance is not here, but there is a different place, but when he watched Chang'an Avenue just now, he has found the famous mansion of the Duhu Valve's West Gift Garden, no one will forget to go straight to the goal, only a moment to see the back wall of the West Gift Garden of Dugu's house, and immediately turn over and go straight into it.

I remember that it was Beijing Zhang Xuanning who entered the well, at this time it was February, but the well water was relatively warm, and he had no way to hold his breath in the water for a long time, but he had a goal, and he only touched a stone on the wall of the well, and pressed it hard.

Only the sound of "rolling" is heard, floating on the surface of the well, and the wall of the well slowly recess overhead, revealing an entrance that can only be passed by one person.

Zhang Xuanning didn't have the breath-holding skills of Er Xiaoqiang at that time, when he knew that the treasure was opening now, the breath inside was very stuffy, and there might even be some suffocating gases, and he had to wait for time to release and exchange gases, so he was not anxious, so he floated in the well and waited.

When I dived into the water just now, of course, the surface of the water was shattered, but now it was motionless, and a bright moon appeared around my body.

The clouds crossed the sky, and the moon appeared faintly, and Zhang Xuanning's heart also had an indescribable taste.

Quietly closing his eyes, it seemed that only for a moment, he had entered the realm of being with heaven and earth, which was similar to the water in a well, thoughtless and unhindered.

And half an hour later, Zhang Xuanning suddenly woke up and felt refreshed.

The higher the level of cultivation, the more emphasis is placed on the perception of heaven and earth and state of mind.

Zhang Xuanning comes from the future and has a different state of mind, so at the beginning, he must honestly lay the foundation slowly like ordinary people, but once the foundation is completed, the cultivation degree will continue to accelerate.

At that moment, I plunged directly into the secret passage made of granite, and sure enough, although the air in it was still turbid, it was no problem for breathing, and it was relatively safe to enter.

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