"Youyang!"

Arrived at the post station in the evening and got off at the gate of the post station, Princess Pingyang called Xue Lang.

"What does Your Highness command?"

Princess Pingyang didn't stop, walked straight over, walked to Xue Lang's carriage before stopping, looked at Xue Lang's carriage, and patrolled Xue Lang's carriage-

That's right! Xue Lang's four-wheeled carriage has finally been built! After his redesign, this carriage, which is smaller than the four-wheeled carriage for transporting goods, stands out from the crowd among the two-wheeled carriages. Princess Pingyang only came to look at it at this time, she was already entangled in miscellaneous matters, and she could calm down.

Xue Lang glanced at Princess Pingyang silently, and asked in a low voice, "Your Highness, my new carriage...... Is there a violation? ”

Princess Pingyang said: "Nothing! However, the carriage of Youyang is chic. ”

Xue Lang smiled embarrassedly, the ins and outs of the inside, but he was embarrassed to say clearly-

In other words, since Xue Lang knew that he was going back to Chang'an, and because he was afraid that the river water would freeze in winter, it was not conducive to navigation, so he had to take the land route, not the water route.

Taking the land route means taking a horse-drawn carriage for several days, and thinking of the road conditions on the official road, Xue Lang feels that it is quite good to walk on his feet. However, this is not possible, you can ride a bicycle in the summer, and ...... in the winter The swishing breeze can't be resisted even if it's wrapped in fur, not to mention riding a bicycle, even riding a horse is a very sour thing.

The so-called people are forced out. In order to get the greatest comfort on the way back to Chang'an, Xue Lang racked his brains, and finally remembered the restored object of the Roman four-wheeled carriage he had seen in the museum from his long memory.

When it came to the comfort of the carriage, Rome was ahead of the East. Horse-drawn carriages in ancient Rome were equipped with steering and shock absorbers. If it weren't for the memory that was strengthened when he crossed over, Xue Lang really might not be able to copy it, of course, there is a lot of credit to Su Han, as a doctor, Dr. Su Han Su is simply a handicraftist, he can't help but be able to strike iron, and he can also do simple carpentry work.

In this regard, Dr. Su seemed very flat, saying that there were no craftsmen in the mountains, so under the pressure of life, they would do some work as masters and apprentices. Xue Lang still remembered that Dr. Su was very bland at that time-

Ironsmithing, carpentry, masonry, stonemasonry, pottery, tailoring needlework, Su Han can do it. Of course, except for the craftsmanship of iron-making, Dr. Su's style is relatively rough, and he takes the practical route.

After Xue Lang's design drawings came out, Xue Lang and Su Han studied it for a few days, and then made a real thing, there was no difficulty in the carriage, but the difficulty was the selection of steering devices and shock absorption. The ancient Romans used the cowhide to absorb the shock, and the Tang Dynasty could not kill the cow, so Xue Lang used bear skin to destroy the heavens.

Princess Pingyang circled around this very rustic carriage and said, "Youyang's carriage ......."

It seems to be searching for more appropriate adjectives.

Xue Lang silently rolled his eyes and glanced at Her Royal Highness the Princess, and answered in a low voice: "It's more unpretentious." ”

Although Dr. Su can do carpentry, Dr. Su, who is above pragmatism, can't carve anything. The result is that this carriage from Dr. Su's hand is relatively unpretentious. Only lacquered, nothing else decorated. Princess Pingyang Wan'er, with an approving chin: "It is indeed unpretentious." I don't know which master made it? ”

Xue Lang confessed very honestly: "It's me, Doctor Su, and Ah Lin. I won't carve, I laugh, I laugh. ”

"I see."

Princess Pingyang nodded and said: "Along the way, I watched the carriage that Youyang was riding, the steering was flexible, the driving was stable, looking at Youyang's face, I thought that the driving should be very stable, and the ride was quite comfortable, which was very different from other four-wheeled carriages. Right? ”

Xue Lang nodded, and explained to Her Royal Highness the Princess: "Your Highness's eyes are like torches, and you can see the advantages and disadvantages at a glance. In fact, the secrets are hidden in two places, please see them, Your Highness. ”

Xue Lang asked Wanfu to pull the horses away to graze, and he bent down to explain to Princess Pingyang that this carriage was different from the Tang Dynasty carriage: "The main thing is that there is an additional steering device for the front axle, and there is also a shock absorption device, with these two devices, the carriage will run much more smoothly, and the impact of bumps is not as great as that of a two-wheeled carriage." In fact, the subordinates feel that the best design is the interior. ”

As he spoke, Xue Lang opened the back door of the carriage-

In the setting of the carriage door, Xue Lang followed the trend of the Tang people and drove at the back, instead of opening the side door like the European carriage. The side carriage does not expose the wheels, but uses wooden planks to cover the wheels directly, so that the gap between the wheels can be made into a simple small cabinet, which can be used to hold things.

After Xue Lang opened the car door, Princess Pingyang looked inside, and immediately retracted her body to look outside, and after a puzzled sigh, she directly ordered: "Except for Youyang, everyone should step back and don't approach!" ”

"Whoa!"

The personal attendants who came with the princess took a few steps back. Xue Lang was a little puzzled: "Your Highness? ”

Princess Pingyang didn't answer, but jumped into the carriage, directly stretched out her hand and patted around the carriage, patted and touched for a while, and then got out of the carriage, looked outside and inside, and her face was full of wonder.

Xue Lang suddenly realized that Her Royal Highness the Princess had discovered a bad taste he had set up inside the carriage: "Your Highness, this is a painting technique, which uses painting technology to achieve the purpose of deceiving human vision, which is called spatial vision deception." In fact, there is no change in space, but the human eye is deceived by the painting technique and feels that the space has changed. ”

Princess Pingyang nodded and asked in a low voice, "So, this is Youyang's fiddling?" ”

Xue Lang nodded: "Back to Your Highness, yes." It's just a whim, I wanted to play tricks on Heng Yu and Ah Lin, Your Highness remembered to help me keep it secret. ”

Princess Pingyang turned her head to look at him, with a deep meaning in her eyes: "It really should be kept secret." ”

"Huh?"

Xue Lang was stunned for a moment, and then suddenly realized: "Your Highness thinks that this technology should be kept secret?" ”

Princess Pingyang glanced at him and said, "This kind of secret technique Youyang wants to show to the public?" What happens if this technology is applied to architecture? It doesn't matter if it's a yang house or a yin house! ”

Xue Lang suddenly said, "My subordinates understand!" Then the subordinates will deal with it! ”

Facing Princess Pingyang's questioning eyes, Xue Lang got into the carriage, stretched out his hand and groped in front for a while, and directly took off the board that had been visually deceived and put it on the roof of the car. The carriage has also returned to its proper appearance, and it no longer has the feeling of being eerily spacious just now.

Princess Pingyang felt quite wonderful, looked inside the carriage, and looked outside the carriage, if it wasn't for Xue Lang in the carriage, I was afraid that I would have to go up and pat it again. However, even if you look at it, you can see some fame, Princess Pingyang asked, "Youyang wrapped the wheels?" ”

Xue Lang nodded and said with a smile: "Your Highness knows, I can't sit in the carriage, so I designed this four-wheeled carriage myself." I designed the chassis of the carriage to be concave, and the carriage is the concave part, and the two pairs of wheels are on either side of the bulge. By separating these two sides with a board, you can make a small cabinet for two storages, Your Highness, please take a look! ”

Xue Lang turned a wooden latch on the left cart, and after turning it horizontally, he could put down a wooden plank, and lay it flat to form a small table, just in the middle of the carriage.

On the right is a small cabinet with a sliding door, with a partition inside, where Xue Lang's thermos pot, wine jug, tea, and snacks are placed.

In the middle of the two pairs of wheels, you can also put some gadgets. For example, Xue Lang put on chess, checkers and poker, and prepared to find good friends to play in the carriage during the long journey to pass the time.

Princess Pingyang was simply amazed and said with a smile: "Youyang's whimsical ideas are really endless and admirable. ”

Xue Lang smiled embarrassedly and modestly: "Your Highness has won the award, the award." ”