I was riding a four-wheeled carriage designed by this young master himself. However, after being carefully crafted by skilled craftsmen in Chang'an, this four-wheeled carriage not only retains the lightness and airtightness of my design, but more importantly, it also adds the artistic level and appreciation style of the beautiful Chinese nation.

The driver sat in front of him, driving the four horses pulling the cart. Next to the driver, there were each sitting with a vigilant and fully armed guard. At the back of the cart, there were also two elite guards watching the surroundings vigilantly to protect the safety of the cart.

The carriage is wrapped in beautiful and refined sheepskin everywhere, and the seat is stuffed with down, making the seats moderately soft and hard, and there is no problem when you sleep as a bed. Well, the carriage is about 1.8 meters wide and about two meters long. In the center of the carriage, there is a steaming iron stove with three people on both sides.

Now, I was lying on the chair, resting my head on the round thighs of Yaoguang, looking at the exaggerated eyes of Yaoguang, looking at the carriage she had never seen before.

"It's so comfortable... How did you get it out of your car, and you can also see the scenery outside the car from inside. The cushion is so soft. Hello, my husband, you are not allowed to make trouble..."

"What am I making trouble for me? How about it? Do you like this car?" This young master reluctantly took back the trembling breasts that had sneaked into her chest, and said with a smile.

"Well, I like it, it's so beautiful, and it doesn't feel as bumpy as when I was riding a bus in the past. Husband, when did you get it?" Yaoguang girl pinched the tip of my nose with a look of shame and asked curiously.

"You don't know this, right? Hehe, this is so long. It has to start when your husband and I have a relationship with the Turks and started to trade wine and horses..." This young master held Yao Guang's slender hand that pinched the tip of my nose, put it on his lips and kissed it.

The four-wheeled carriage was indeed an idea when I started trading wine and horses with the Turks, but one serious problem was the road.

The advantage of four-wheeled carriage is its large load capacity and smooth operation. The disadvantage is that four-wheeled carriages need to be driven on a relatively flat road. According to historical records, Roman carriages discovered the Celtic four-wheeled carriages and added reforms to make the four-wheeled carriages use a rotating front axle in the direction of rotation, use a whole piece of rim and wheel hoop to increase strength, and use a metal-edged wheel hub to reduce friction. The performance of the carriages was greatly improved. By 200 AD, the solid Roman four-wheeled carriages rumbled across the avenues, and horse-drawn mail trucks and buses could travel 160 kilometers a day, which is 320 miles a day. Stop in the middle and replace the horses and continue moving forward.

In the following centuries, this vehicle was replaced by a group of more solid, lighter, more beautiful and more effective carriages. By the seventeenth century, the four-wheeled public stagecoach undertakes almost all long-distance passenger transport tasks, bringing prosperity to land travel, and the exquisite private carriages became a symbol of royal status. The most luxurious British royal carriage was built for Emperor Qiao Shi in 1763 and was called "the most magnificent carriage in history."

At this time, the speed of the four-wheeled carriage had reached a daunting level. A fast stagecoach traveled 376 kilometers on the best road at that time, and it took about twenty-three hours, or less than a day, to travel such a long distance.

The Roman Empire at its heyday had nearly 80,000 kilometers of flat avenues. When driving on such a highway, the advantages of the four-wheeled carriage can be well reflected, making this four-wheeled carriage very popular. With the demise of the Roman Empire, the roads gradually collapsed after centuries of disrepair. In desperation, the four-wheeled carriage gradually became a two-wheeled carriage because it was practical and could drive under rugged terrain conditions.

When I first started the wine-horse trade with the Turks, there was no suitable road to drive such a carriage, so I could only think about it. However, after I became the county magistrate of Hancheng County, I finally began to ask people to study various equipment about four-wheeled carriages.

Of course, the four-wheeled carriage I hope is no longer the original four-wheeled carriage, but a carriage with springs or steel plates as shock absorption, and can be assembled and disassembled with screws for easy repair.

Now, cement straight roads have spread throughout the Guanzhong area, and the number of horses in Guanzhong is also increasing rapidly. Therefore, the use of four-wheeled carriages naturally has perfect basic conditions.

Then, the Hancheng County Horse Carriage Machinery Company, which had already developed a prototype car, began to design and produce it as soon as I received the order from my master. Well, it was originally used as my wedding car, but unfortunately, it was forced to stop me by Fang Xuanling and others, so I was asked to ride a six-horse car to welcome him. This beautiful new car was naturally put away. After all, I usually ride a horse when going out, unless I have to take a long distance, otherwise I would not have the time to ride a horse carriage.

Today, when Yaoguang girl was about to return home, I naturally took it out to show it to the soft girl, and also felt the comfort of this carriage. With me as the spokesperson, I believe that the carriage will definitely be sought after by the wealthy businessmen and nobles in Guanzhong in the future. At that time, I will make a lot of money again.

Compared with two-wheeled carriages, the biggest advantage of the four-wheeled carriage is its stability and comfort, which is especially suitable for long-distance travel. Anyway, if I want me to ride in such a carriage, I will have two beautiful girls in the carriage, so I will stay for ten days and half a month. Of course, the premise is that these two beautiful girls must be Sister Qingxia and Yaoguang.

The four-wheeled carriage is indeed quite stable, and it has been shock absorbed, so when you sit on the carriage, you will feel a slight bump at most, just like sitting on a shaking rocking chair, and even the shaking amplitude is not as big as a rocking chair.

At this moment, the Yaoguang girl whose freshness has passed is lying in my arms, her slender legs are placed on the soft cushion, and she looks enjoyed: "My husband is so smart. He can always invent something unexpected but very useful."

"Just like this carriage, it is not bumpy at all when sitting, and it is very spacious and soft, I am afraid that I can sleep while lying."

"Of course, I don't think about who I am, your husband?" This young master smiled proudly. "There is only things you can't think of in this world, and nothing I can't do."

"Tsk, just blow it. If you have the ability, you can pick the moon off for me?" The girl Yaoguang curled her lips disdainfully, hooked her fingers at me and said angrily.

"Uh, that's right, hey, what's your expression? Don't think that I can't do it because it's your husband, but because the moon is too big, at least equivalent to one-quarter of the earth we live in. How to pick it? Even if it's really picked it for your husband, you can't take it." As an excellent time traveler, I can't look down on the beautiful girl so despised, especially if this girl is still my wife, that's even worse.

"Really, it's just a little bit. At most, it's the size of the plate. How could it be that big?" Yaoguang changed into a more comfortable position in my arms and raised his fingers and gestured at the bright moon in the sky.

"That's because it's too far away from us, do you know? It's at least... seventy-sixty-six thousand miles away." I said after converting the kilometers and mileage in my heart.

Hearing the girl Yaoguang's eyes suddenly widened and exaggeratedly shouted, "Seventy-sixty thousand miles? God, how far is that? Are you fooling me again? Humph, it must be."

This young master almost skewed his mouth and gently pinched her perky breasts and trembled. "How could this young master, a scientific person who has always been rigorous, fool you with such a simple fact?"

The Yaoguang girl was attacked by her breast enlargement and quickly reached out to block it. But this young master was not so easy to deal with. The magic claws made the Yaoguang girl's resistance disappear without a trace.

"Bad guy, you have never been to the moon, how could you know that it is so far away?" The girl Yaoguang curled her lips angrily, and her pink red lips looked so sexy and seductive.

This young master swallowed his saliva and must be serious in scientific research. At least in terms of expression, well, his hands continued to play with the bulging and plump breasts of Yaoguang's chest. I said rigorously: "Of course, it was the answer obtained through rigorous calculations."

"Really?" Yaoguang was completely attracted by the wisdom light emitted by my son's brain. He didn't notice that my hand was at all. Perhaps, Yaoguang, who had given up resistance at this moment, actually acquiesced to my behavior in her heart, just to cover it up with doubts, and she deserves to be my wife.

"Of course it's true." I cleared my throat and began to linger: "Far from the Western Qin land, in the ancient Greek federal country, some scholars have calculated the distance from the earth to the moon. Of course, if you want to measure this distance, you must first have a suitable reference object. After all, the distance and size of a celestial body are difficult to measure, but as long as you can determine a starting point, then all its manifestations on the earth will be quantified..."

This is a real thing. People like this young master never fool people. In the third century BC, Greek astronomer Gulado Senes measured the radius of the earth for the first time. Because he discovered that on the summer solstice, when the sun shone directly to the well in Sai (set as point B) in the city of Sai (set as point B) on this day, the angle between the zenith at the point (set as point A) in Alexandria (set as point A) (that is, the point where the plumb line extends infinitely upward and the "celestial sphere" intersects the sky) and the sun are 2 degrees.
Chapter completed!