Toyosu.

It borders Turks to the north, Shuofang to the west, and Yunzhong to the east.

It is located in the hinterland of the Hetao Plain where "the Yellow River has many dangers but only one rich one", at the top of the big "Ji" character.

This is almost the northernmost border of the Tang Dynasty. It was recovered just a few years ago. By comparing the satellite maps of later generations, we can know that this should be the Wuyuan County area of ​​Inner Mongolia in later generations.

From Taiji Imperial Capital to Fengzhou, the straight-line distance alone is one thousand kilometers away.

Bai Yuqi, who put on the vest of "Xuanzhen Xingjun", rushed to the border as soon as possible.

Be prepared to respond to the Dragon Cavalry Guards who will transform into the "Dragon Cavalry Mercenary Group" and go deep into the hinterland of the Turkic grasslands to notify the disaster-stricken "Jiuli Brothers" to take refuge south.

We tried our best to travel in a straight line, but we still couldn't avoid the twists and turns, which added a lot to the distance. Even if we traveled lightly, it took us several days to reach Fengzhou.

This is mainly because riding on the road for a long time is hard for humans but not for horses.

In ancient times, when riding horses, they did not run all the way. Most of the time, the horses walked along at a leisurely pace.

They are eating grass, not burning oil. How far can they run with a person weighing more than 100 kilograms and luggage in one breath?

The purpose of riding a horse is only to save the rider's energy, not to pursue speed.

Even though Bai Yuqi and the others were riding high-quality war horses, even if they ran for dozens of miles at full speed, the horses would start to spray foam from exhaustion.

So it's not impossible to say "a journey of a thousand in a day and a journey of eight hundred in the night", but they didn't say that the whole journey was done by one person and one horse, right?

In ancient times, there was a post station thirty miles away. The so-called "eight hundred miles express" refers to the postmen at the post station delivering letters in the form of relays, and the selected post riders are all thin and thin people (a few

Post soldiers who can rebel are not taken into account).

Horses have extremely poor endurance. As a joke says, a horseman cannot outrun a man on foot.

This means that during the march of the troops, the cavalry troops cannot actually outrun the infantry troops.

This is like the tortoise and the hare race. Although the cavalry is fast in short distances, it will eventually be caught up or even surpassed by the infantry (here it simply refers to rushing rather than fighting. Even if the infantry can outrun the cavalry, it will still be tired and vomit blood, and it is impossible to have combat effectiveness).

So on the first day after setting off, Bai Yuqi, who discovered this, gave up the BMW gifted by Li Shimin and replaced it with a more unscientific means of traveling:

[Summon Mount]: Summons a horse made of arcane energy, which can travel at a constant speed of 60 kilometers per hour. The arcane horse's existence time is 2 hours/spell level (if it has the corresponding riding skills, the arcane horse can

Increase the corresponding speed like a real horse);

The most magical thing about the spell recommended to Bai Yuqi by the system is not that it can summon an arcane horse.

What's more, this horse made of arcane energy can run at a constant speed of 60 kilometers per hour without slowing down due to physical exertion!

And Bai Yuqi himself also has the [Basic Riding] skill with [Riding] +250% effect. Is it possible to reach a speed of 150 kilometers per hour when running freely?

In less than ten hours, he can run from Tai Chi Emperor Capital to Fengzhou, and he can ride a horse like a shrimp hunter!

Anyway, the arcane horse consumes arcane energy, so it cannot be ridden bad no matter how hard you try. At most, the energy consumption is too high, which shortens the existence time.

So once the fun gets high, Bai Yuqi can even control the arcane horse to achieve the effect of four-hoof drift!

However, the speed of 150 kilometers per hour is only a theoretical value. Don't forget that the era he is living in is not the future generation with developed transportation networks.

Moreover, in order to reach Fengzhou in a straight line as much as possible, Bai Yuqi took a road that was not ready-made. There were barren mountains and ridges along the way, and there were ditches and rivers blocking the road.

Bai Yuqi actually had to move forward while building the road. Otherwise, why would you think it took several days to reach Fengzhou at a speed of 150 kilometers per hour?

The main reasons for rushing like this are, firstly, to seize the golden opportunity of the grassland white disaster, and secondly, to avoid being caught up by the large troops behind...

This time [Wuji Sect] came out in full force, and Bai Yuqi came up with the "black technology of magic modification" that he had researched some time ago, the steam truck!

This kind of installation combines [Construction Science] and [Mechanics] technology to develop a steam engine steam truck.

When loaded with 100 kilograms of coal in an empty state, it can travel nearly 200 kilometers at a "high speed" of 60 kilometers per hour!

However, when fully loaded with five tons of weight, 100 kilograms of coal can only run a distance of more than 100 kilometers at a speed of 35 kilometers per hour.

Even though this steam truck is heavy and polluting, white smoke billows and soot is flying when it runs. It has to be followed by a special fuel truck and water supply truck. Every few hundred kilometers it has to stop for a comprehensive overhaul to prevent parts from wearing out.

And adding lubricating oil (animal grease), the operating efficiency is incomparable with later generations of vehicles.

But in Datang, this was the first fully mechanized fleet, and as long as there was enough fuel, it could travel thousands of miles a day.

This thing was originally prepared by Bai Yuqi for the "Southern Land Transportation Network" that would be opened at that time. Unexpectedly, the road in the south had not yet been built, but it was first used in the "Rescue Plan" in the north.

Therefore, in order to prevent this steam convoy from catching up with him, Bai Yuqi could only rush to the front to repair the road alone.

Originally, it was not in Bai Yuqi's plan to build the road himself, but considering that the situation this time was more urgent.

Moreover, he also wanted to test how much his spellcasting ability would be affected after leaving the high-concentration environment of [Arcane Particles], so he took up this hard work.

But what he didn't expect was that the [Arcana Particle] environment had a far greater impact on him than he imagined!

Within 10 kilometers of the Tai Chi Imperial Capital, the casting effect is almost unaffected.

After leaving the Tai Chi Imperial Capital area, for every 10 kilometers extending outward, the spell effect will decrease by 10%, and the consumption will increase by 10%.

After waiting for 100 kilometers, for every 10 kilometers extending outward, the spell effect will decrease by 100%, and the consumption will also increase by 100%.

Once it exceeds 200 kilometers, the existence of [Arcana Particles] is almost invisible, and he can only rely on his own accumulated arcane energy to release spells.

This leads to Bai Yuqi, who currently only has 100+300 arcana points, to release a full-efficiency spell that is superimposed with various special effects such as "strengthening, advancement, over-leveling, strong effect, extreme effect", etc., which will cost 144

I clicked on the arcane energy quota, but it can only affect 4050 cubic meters of rock or soil!

In other words, even if he only paved a 10-meter-wide, 0.2-meter-thick rock road, he could only spread a distance of 2,025 meters by releasing a spell once, and by releasing the spell twice, he would basically store himself.
Chapter completed!