From Luoyang to Chang'an, more than 800 miles, the only one that can be passed is the Hanguan Ancient Road.

This Hanguan ancient road, hidden between the mountains and mountains, two cliffs, deep canyons, since ancient times has been a place for soldiers.

However, since the establishment of the Wei State, this Hanguan Ancient Road has become the hinterland of the Wei State official road, in order to cope with the continuous invasion of the Shu State, the army near Luoyang can rush to the aid of the Guanzhong in the shortest possible time, the Wei State spent a lot of effort to repair this official road, although limited by geographical conditions, many places are not wide, but the road is generally smooth, all the way is smooth, but you can not see the vicissitudes of the Jin Ge Iron Horse hundreds of years ago.

After the Yue cavalry battalion left Luoyang, it went all the way to the west, looking at Chang'an.

If the cavalry of the Yue cavalry battalion marched alone, the journey of 800 miles would probably only take about two days, and if the military situation was urgent, it would not be impossible to reach Chang'an in one day and one night.

However, according to the theory of wooden barrels, it is not the longest plank that determines the amount of water stored in a wooden barrel, but the shortest one.

In the same way, it was not the fastest cavalry of the Yuecai battalion that determined the speed of the march of the Yuecai battalion at this time, but the people who escorted the grain and grass and the horsemen who fed the horses.

These auxiliaries are not in the establishment of the Viet Cavalry Battalion, and if the military situation is urgent, the Viet Cavalry Battalion can completely speed up, let these horsemen and people walk slowly, and then meet when they reach their destination.

However, now is not the time of military emergency, Xiahou Xuan is in Chang'an, and he is just gathering troops and stockpiling grain and grass, so Cao Liang is not in a hurry to go to Chang'an, but walks slowly, with the same marching speed as the horseman and the people, stopping and stopping.

Naturally, the speed of such a march is not fast, but Cao Liang is not too anxious, and there is no difference between arriving three days early and arriving three days late.

Therefore, Cao Liang is naturally happy to enjoy the journey, along the way, but all the wonderful scenery, and it is the pure primitive kind, every scenery is a generous gift from nature, beautiful.

Cao Liang in later generations also likes to travel, but when it comes to the Golden Week, when he walks there, he is overcrowded, the scenery is not visible, and the frame is full of the back of the head, but now it is deserted and the scenery is unique.

In the winter, the march is short, the days are short and the nights are long, and there is not much to walk during the day, because as soon as the time is over, it is already sunset in the western mountains, and the twilight is dark.

He was marching between these canyons, and it was getting dark too early, and he could see the sun every day, no more than two hours at most, and he always felt that the sun was already dark when it was so flickering.

In accordance with the requirements of the art of war, the campsite must be selected in a flat place, and the right side and rear should rely on the high ground, low in front and high in the back, the front is the place of death, and the back is the place of life.

Even if the conditions are not met, Cao Liang has to patiently choose a relatively good terrain, and at the same time, Cao Liang's requirements for camping are very strict, and the camp tent is not only orderly, but also the surrounding protective measures are also in place.

Lin Zhubo was very puzzled, the Yue cavalry camp was on the march at the moment, camping at night and setting off during the day, these camps were temporary, it stands to reason that such a camp tent only needs to be simple, and it does not need to spend a lot of time and energy to engage in it.

Moreover, the entire Guanluo Avenue is in the hinterland of the Wei State, so there is no need to worry about being attacked by the enemy. Even if there are some bandits and bandits hidden in the mountains and forests, it is already their luck that the officials and soldiers do not encircle and suppress them, how can they dare to come to disturb and find trouble, isn't it that the birthday boy hanged himself for a long time?

Therefore, in Lin Zhubo's view, Cao Liang's actions were purely a waste of time and physical strength, and it was completely unnecessary to build such a strong camp.

However, Cao Liang always insisted on his own approach, you must know that the Yue cavalry battalion has never gone out to fight at all, and has always stayed in the army barracks, and in their thinking, there has never been the idea of setting up camp.

Therefore, Cao Liang strictly demanded the quality of camping, in order to cultivate the good camping habits of the Yue cavalry camp, many wars will be fought for a long time, so the army must abide by military regulations in the field camping.

The night is the time when the army is the most tired and tired, and it is also the time when the people's willpower is the weakest, the two armies are fighting, sometimes the night is an opportunity, if the night camp is too careless, it is likely to be attacked by the enemy.

Although it is said that the march will not encounter any danger, Cao Liang can not give the Yue cavalry battalion any paralyzing thoughts, strict requirements, not only the camp is strong, but also sent a clear post and a secret outpost to guard against the enemy's sneak attack.

Once the habit is formed, it is very difficult to change, if it really arrives at the front line of the confrontation between the two armies, the Vietnamese cavalry battalion does not have a set of excellent basic skills for camping, and it really encounters a sneak attack from the enemy, it will be really too late.

On this day, seeing the red sun slanting westward, Cao Liang was ready to order the camp again, and when Cao Liang was looking around to check the terrain, he saw a city wall faintly in front of him.

His mind moved, and he asked, "Where is the front?" ”

"Captain Qiyu, in front of you is Hangu Pass in the Qin Dynasty." The soldier who knew about it immediately replied.

Cao Liang sighed lightly, there are two Hangu Passes in history, one is the Hangu Pass in the Qin Dynasty, and the other is the Hangu Pass in the Han Dynasty, the two are separated by more than 70 miles, and they are not in one place.

The Hangu Pass mentioned in later generations, most of the time refers to the Hangu Pass in the Qin period, because it is closed in the valley, it is as dangerous as a letter, so it is called Hangu Pass.

Hangu Guanxi is based on the plateau, east of the river, south of the Qinling Mountains, north of the Yellow River, is one of the earliest Xiongguan fortresses built in China. Founded in the Spring and Autumn Period and the Warring States Period, it is the throat of Luoyang in the east and Chang'an in the west, known as "the Tiankai Hangu Zhuangguan, the dust of the valley to the north sky", "the twin peaks towering beside the river, a battlefield in the Hangu Valley since ancient times", since ancient times it is a place where soldiers must fight. In the third year of King Zhou Shenliang, King Huai of Chu raised the army of the Six Kingdoms to attack Qin, and Qin relied on the natural danger of Hangu, so that the army of the Six Kingdoms "ambushed millions of corpses, bleeding and drifting".

If Hangu Pass fails to stop the armies of the Six Kingdoms, then even if the Qin State does not die, the Guanzhong Plain will be ravaged, and the vitality of the Qin State will be greatly damaged, and it will be difficult to dominate the world again.

This Xiongguan became a nightmare for the Six Kingdoms, making it impossible to advance half an inch, and also making the land of Qinchuan for 800 miles as stable as a mountain, laying a good foundation for Qin's unification of the world.

Cao Liang carried a horsewhip, pointed to the direction of Hangu Pass, and ordered the Yue Cavalry Battalion to move forward at full speed.