The small business card brought the institute an income of 2,156 taels of silver. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 In the INFO Research Institute, including the crown prince Li Chengqian, they were very happy.

Li Su asked the crown prince Li Chengqian to take out 1,000 taels of silver, handed it over to the household department, and returned the start-up fee given by the imperial court.

Li Chengqian was a little puzzled at first, and asked, "Sixth brother, why is this?" ”

Li Su said: "In the future, there will be many opportunities for our institute to make money, and it will inevitably make people jealous and hateful." We must prepare in advance to prevent being attacked. ”

The institute was not allowed to do business, and Li Su was ready to start an industrial model to improve Datang's industrialization level on the one hand, and increase Datang's income on the other.

In Datang, the concept of commerce is the act of buying from one party and selling it to the other party without producing it yourself, and earning the price difference in the middle.

Printing business cards, which is not a commercial practice, was classified as an industrial (industry) act in the Tang Dynasty, similar to a blacksmith charging a manual fee. This way of charging processing fees is to play a side game. Nothing can be said by others.

He discussed with Li Chengqian and decided on the future industry, so he joined forces with the Ministry of Industry to research and develop technology, collect technology transfer fees, and the Ministry of Industry was responsible for manufacturing and running government operations.

"Boom, boom." A carriage walked on the uneven official road, and Yang Kang, the commander of the Liang Palace, escorted the front and rear of the carriage with 8 cavalrymen.

Li Su came back from the planting base in Chang'an County, a little tired, and fell asleep in the carriage.

However, he slept very hard, for he was often awakened by the jolts of the carriage.

"Lord Wang, are you not feeling well?" The maid who was sitting in the carriage and waiting for him picked the yarn, and when she saw Li Su frowning, she asked with concern.

Li Su sat up straight and said, "What kind of road is this?" And this carriage, upside down. ”

Cai Sha nodded in understanding and said, "Yes, the road outside the city is not as good as the road in the city, so you will settle for it." ”

Li Su muttered: "It's still comfortable to take a car." ”

"What is a car and what does it look like?" Cai Sha asked curiously.

Li Su seemed to remember something, and said: "By the way, the four-wheeled carriage, I will take this in the future, hehe, Datang RV." ”

Cai Sha's eyes widened and said, "Isn't it, Lord Wang?" You mean a horse-drawn carriage ride? ”

Li Su also asked curiously: "What's the matter, is what I said ridiculous?" ”

"Giggles", Cai Sha leaned back and laughed, and finally tears flowed out.

Li Su had the impression that there were no four-wheeled carriages in ancient times, and Europe did not appear until the late Renaissance. He asked, "Have you ever seen a four-wheeled carriage?" ”

Cai Sha smiled: "What's more, the slave maid has also seen a six-wheeled carriage!" However, you can't sit on people. Hee-hee. ”

"What's that for?" Li Su asked.

"That's the one who pulls the coffin. Hee-hee. Cai Sha couldn't help but laugh.

"Huh? No way. Li Su was a little unconvinced, opened Baidu and searched, only to find that he was lonely and unheard.

It turned out that there were already six-wheeled carriages during the Warring States period, and four-wheeled carriages also appeared later. It is mainly used to transport coffins.

In addition, in certain areas, four-wheeled carriages have also appeared, mainly in places where the road is flat and speed is not required, such as transporting grain in the farm, carrying forage on the grassland, etc.

There are various reasons why the four-wheeled carriage has not developed in China, the important of which is the restriction of road conditions, and the other is technical reasons.

The main problems to be solved by the four-wheeled carriage are steering and shock absorption.

Steering on a four-wheeled vehicle with axles is very easy to achieve, it is only necessary to change the suspension of the front wheels to a large disc. The part of the wheel that connects with the body can be combined with the front wheel suspension, so that when the horse turns, the front wheel suspension follows the overall steering.

Due to the role of the rollers in the wheels, the front and rear wheels can automatically adjust the speed difference between the wheels (in fact, it doesn't matter even if there are no rollers, but it is more expensive to the wheels and affects the horse's power).

This suspension mode can not do small angle steering, can not do too fast sharp steering, and the suspension of the front wheel and the structural strength of the entire transmission system are required to be higher.

The invention of shock absorbers only appeared in the early 19th century. Initially, it was a leaf spring shock absorber, and later there were hydraulic shock absorbers, etc.

For both of these technologies, the drawings on Baidu were ready-made, and Li Su decided to develop a four-wheeled carriage.

However, there was one problem that made him feel a headache: the drawings were on Baidu, but how could the craftsmen also see them? Do you want to let yourself draw it first? It was too troublesome, so he consulted the Taobao system.

The system laughed at him for being stupid and taught him a way to take a photo on the computer and then use the Taobao system to ship it. Of course, there is a shipping fee. In addition, a 5% labor fee will be charged.

For the lazy Li Su, as long as he saves trouble, he is not afraid to spend money.

After returning to Chang'an City, he came to the Ministry of Works, and the Ministry of Works, Shangshu Huang Furui, called Wang Lin, the deacon of the relevant craftsman supervisor (from the 8th grade), and asked him to be in charge.

Wang Lin was a 28-year-old young man who was thin and lean, and he immediately called in a few craftsmen who specialized in making horse-drawn carriages.

Li Su showed them the drawings and photos, and asked them to ask questions, and he answered them according to the prompts in Baidu.

After returning to the research institute, Li Su taught Li Ning'er mathematics and bookkeeping if he had nothing to do in the past few days.

Li Ning'er was very clever and quickly mastered Arabic numerals and modern bookkeeping methods.

After Li Ning'er learned it, when she returned home, she began to show off. She called the bookkeeper at home, happily became a gentleman, and avenged her for being a student all these years.

Wang Lin was very neat, and in a short time, he built several four-wheeled carriages. Then he went to the research institute in person to inform Li Su. Li Su went to the craftsman supervisor to guide them to improve.

Time flies, and in the blink of an eye, it is already the beginning of April.

On this day, the sun is shining, the willow branches are green, and the spring is full of joy.

On the streets of Chang'an, a peculiar four-wheeled carriage has attracted people's attention. It was a European-style open-top carriage with a peculiar style and ornate decoration.

The carriage was driven by Cheng Chumo, and the three harms and Li Yinger were sitting in the car, all 5 of them wore sunglasses, and they swaggered through the city in a very stylish manner.

They deliberately came to the gate of the palace, and when they saw a familiar person, they invited them to come up and sit down. Horse-drawn carriages with shock absorbers are very popular.

The next day, there were many notices from the Ministry of Industry in Chang'an City, saying that in three days, a new carriage ordering meeting would be held in the square outside the south gate of the palace. Regardless of Shinong, those who are interested in buying can order.

In the past few days, the appearance of the four-wheeled carriage has attracted widespread attention, and a piece of content on the notice has aroused people's discussions.

On this day, Huo Yi, the largest grain merchant in Chang'an City, was playing chess with his son Huo Qiang at home, and the housekeeper Huo Zhong came in and said, "Master, good news." ”