Not only the passengers, but also the chariot that the Emperor Wuji sent to welcome the guests this time.

Seeing the various shapes of "Tiangong cars", the people driving in Chang'an City were also very surprised.

They had seen a similar vehicle once before, that is, the one that Emperor Wuji rode in when he entered Chang'an, and then donated it to His Majesty today.

Although the chariots seen today are not as luxurious as His Majesty's dragon chariots, they can also be seen to be from the hands of [Tiangongmen].

Since ancient times, the horse-drawn carriages in China have been two-wheeled, so that it is easy to turn in the ruts, while the Tiangong carriage is four-wheeled, and the steering is as light and agile.

What is a "rut"?

A rut is an indentation left on the road surface after a vehicle has passed.

The so-called "rail" in "the car is on the same track, the book is on the same text" refers to the requirement that the spacing between the two wheels of the carriage be changed to six feet.

In this way, all carriages can be driven in the same ruts, avoiding the mess of the road surface, and there are ditches and deep grooves everywhere.

Therefore, the ancient carriages were all walking in two parallel troughs, which should be regarded as the earliest "rail car", right?

In ancient times, there was no cement or oil pavement, and even in the imperial capital of Chang'an, the roads were also dirt.

It is nothing more than tamping with yellow mud and laying a layer of fine sand to prevent dust, and after such a road has been used for too long, the scene after the rain can be imagined.

Paving slate can solve this problem, but if you want to pave all the pavement with slate, do you know how big the project is and how expensive it is?

With the processing capacity of ancient times, it was not easy to remove a flat slab of uniform thickness from a large piece of rock, and it had to be chiseled out by a stonemason little by little and then polished to form it.

Therefore, even if it is a large family, at most, it is to lay a few pieces in front of their house and in the courtyard for stepping on their feet, which is already very particular, and you don't need to count on it if you want to use stone slabs to cover the whole city.

The "heavenly wheel" does not have to walk in ruts.

Because the wheels of the Tiangong car are one foot wide, the four-wheeled landing not only improves the bearing capacity of the carriage, but also reduces the pressure on the ground.

In addition, the use of shock absorbing springs, steering devices and bearings greatly reduces the burden on the cart animals, and the vehicle is able to transport more and heavier goods.

At the same time, because of the reduction of the bumpy feeling, the animals pulling the cart are relaxed, the passengers are also comfortable, and the fragile goods transported will not be damaged because of the bumps, which can be described as a multi-win.

Originally, there was only such a chariot, only His Majesty the Emperor's dragon chariot, everyone envied it in private, who could get a chariot back and enjoy it themselves, wouldn't it end up with secretly wearing a dragon robe at home?

But now, the [Wuji Gate], which represents the Emperor of Wuji, has openly sent various styles of Tiangong chariots to welcome guests, does it mean that this kind of four-wheeled carriage can be mass-produced in Tiangongmen?

People who have formed a kind of pursuit psychology for Tiangong products have begun to think about it again, wondering whether it is a Toto relationship, inquiring about the price of this kind of Tiangong carriage, and they can customize one to enjoy it.

In fact, this kind of "simple" Tiangong car has long been popularized inside the Wuji Gate.

After all, these four-wheeled carriages, driven by animal power, are not even too technical with steering devices and shock springs, except for the bearings.

After knowing the shape and structure, some skilled craftsmen can even take a small mace and hand out a piece, but the problem is that it is time-consuming and laborious, and it is difficult to form a unified system.

So before a large number of craftsmen grew up, a small number of Tiangong cars were consumed internally, but now that they have been taken out with great fanfare, they naturally plan to put them on the market in large quantities, so by the way, they are pulled out to make a debut, which can be regarded as an advertisement.

Wait until the invited guests gather together in the Dingling Building in Daluo Tian City and talk about the Tiangong carriage they just rided.

His Majesty the Emperor, who was also invited, was late in his local tyrant gold dragon chariot, and Bai Yuqi, as the host, also symbolically came out to greet him.

Unlike what the nobles imagined would be able to eat a feast of the delicacies of the Ding Ling Building, there were no singing and dancing arrangements in the banquet hall, nor were there any preparations for fine wine and food, and each round table was just a pot of tea and a few plates of dried fruits.

"Your Majesty, I invited you to come this time, there is a deal to discuss with you, I wonder if you are interested?"

After the guests and hosts were seated in the banquet hall, Bai Yuqi said to Li Shimin as soon as he opened his mouth, and couldn't help but glance at each other with several think tanks around him.

"I haven't consulted the emperor, I don't know what kind of 'deal' it is?"

The emperor was not easy to refuse or agree for a while, and the little brother next to him naturally had to jump out quickly to share his majesty's worries, and the eldest grandson Wuji hurriedly got up and bowed to Bai Yuqi to ask for advice.

With a smile on his face, Bai Yuqi waved his hand and pressed it weakly, motioning for the eldest grandson Wuji to sit down.

Recently, under the retreat and indulgence in study in Invite Yuelou, Bai Yuqi has gradually developed a calm and introverted fairy temperament, and is no longer as frizzy as before.

At the same time, because of the management of the huge Wujimen system, there is a bit of the majesty of the superior, although the temperament is still gentle, but people will always grow, right?

"I plan to set up a 'Datang Transportation Investment Group'. ”

"It has branches such as 'Urban Public Transport Joint Stock Company, Intercity Rail Transport Joint Stock Company, and Inland Water Transport Joint Stock Company'. ”

"From the two directions of water and land, open up the ten trade routes of the Tang Dynasty from south to north and from west to east, and establish a convenient and fast transportation network, I wonder if Your Majesty is interested in participating in a share?"

Bai Yuqi threw out a proposal that shocked the Tang monarchs, and while spreading out a map in front of them, he pointed to the road that had been drawn on the map and explained, listening to the Tang Dynasty's eyes couldn't help but widen, eager to go to the map to see what was going on.

What a huge undertaking this is?

Once this plan is rolled out, it will not only bring Datang a transportation network that can pass the world.

Moreover, a large amount of grain can be mobilized from granaries in Shandong, Jiangnan, and Lingnan to solve the dilemma of insufficient grain production in Guanzhong.

The most important thing is that the Datang Iron Cavalry can travel all over the entire territory of the Tang Dynasty in the morning and evening, so why not worry about the world Jingping, Guotai and the people's peace?

If the road can be repaired to the Turks and the pressure of logistics and material transportation of the Tang army can be solved, why can't you exterminate those Turkic barbarians?

A group of Tang monarchs and ministers were all killed in the troubled times, and the first thing that came to mind was the role that these transportation networks could play in the military.