Qin Mu hesitated for a moment and explained: "What I want to develop is a new business, an industrial reform, and a business model that sucks blood and harvests the world. ”

"All over the world?"

"The Turks and Persia are all foreign countries, and the whole world is composed of dozens of such countries, all of which have people who need to farm, and what we have to do is to sell goods to them in exchange for money and grain, and create the trade rules formulated by the Tang Dynasty."

"Silk, tea, and porcelain are indeed popular with them, but the time is too long, and long-distance transportation is far away from quenching their thirst." Wu Hou analyzed.

"Her Royal Highness the Queen Mother is right, far water naturally can't quench the thirst of the near, but what if the time can be shortened, for example, it takes about three or four months to go to the Western Regions Protectorate, and what if it is compressed to a week or half a month?"

"How is this possible?" Takego's pupils shook, and at the same time with excitement.

If it was really possible to reach the farthest place in Datang so quickly, the government military system would not have become as flooded with deserters as it is now.

"Of course it can be done, Her Royal Highness the Queen Mother, how about I make a bet with you?"

Empress Wu looked at Qin Mu's firm gaze and nodded, "Say it." ”

"After three years, I guarantee that Datang's taxes will be doubled, provided that the imperial court does not interfere in my business."

"Three years, hmph, Qin Mu, don't talk too much, what if you can't do it?" Empress Wu was amused by Qin Mu's innocence.

"I can't do it, I'll leave it to you."

"Good! Qin Mu, you are a smart person, and the most important thing I lack in Datang is a smart person. Empress Wu reminded.

"Her Royal Highness the Empress Dowager Xie trusts."

After Qin Mu left, Empress Wu thought about what Qin Mu had just said, and asked Shangguan Wan'er beside her about Qin Mu's situation.

"After you came into contact with him during this time, what kind of person do you think Qin Mu is?"

Shangguan Wan'er said flatly, "This person has a strong executive ability, his ideas seem to be wild but they are reasonable, and he does what he says, if he is an official, he is also a capable minister." ”

"Well, there is no shortage of smart people in my Datang, what is lacking is loyal smart people, so it depends on his choice. In the future, you will be responsible for sending someone to monitor his every move, and if you are friends with her, you will naturally be able to control him. ”

Shangguan Wan'er heard the meaning of Empress Wu's words, she was absolutely loyal to Empress Wu, and if she wanted to control Qin Mu, she had to sacrifice herself when necessary.

"Wan'er understands."

Along the way, Qin Mu had already said what Empress Wu had said before, and his mind was full of his own coal mines.

With the most important fuel of the steam engine, the Industrial Revolution laid a solid foundation.

Nowadays, the most important thing is to build a steam engine.

He came to the steel mill outside the city without stopping.

The poured steel fittings are vastly different from before, not only are there no obvious defects, but the color is also more uniform.

"Good! The next step is to reprocess all the parts. ”

According to the drawings, the piston and brake rod were to be further machined, and the steam engine needed four prerequisites to work efficiently.

First, tightness: the steam engine needs to keep high-pressure steam working in a closed container, so tightness is an important problem. In the early development of steam engines, sealing problems often led to energy loss, leaks, and safety hazards.

With the current manufacturing process, tightness should not be a problem at first, mainly to solve the tightness after wear.

Second, the early steam engines were relatively inefficient. The heat energy generated by burning fuel can only be converted into a part of the mechanical energy, and most of it is lost as heat. Improving the efficiency of steam engines is a long-term challenge that requires improved design and process technology.

The drawings given by Qin Mu are already improved mechanical models, and they don't need to go back with the experience accumulated by their predecessors for more than a hundred years, as long as they make some changes on the basis, they can solve it.

Third, material and engineering issues: due to the requirements of high temperature and high pressure, steam engines put forward requirements for materials and engineering technology. Today's materials may not be able to withstand high temperatures and pressures, and are prone to failure and breakage. In order to solve this problem, materials and manufacturing technologies need to be continuously improved.

Retrofitting materials and manufacturing techniques doesn't happen overnight, and the way to do this today is to make more replacement parts to compensate for the shortcomings of the material.

Fourth, the problem of fuel: steam engines need fuel to produce steam, and coal was mainly used as fuel in the early days. However, there are also some difficulties and challenges in the acquisition, transportation and storage of coal resources. In addition, coal combustion produces a large number of pollutants that have a negative impact on the environment.

Today's Datang is a blank sheet of paper that has never been written, and the development of coal requires steam engines, as well as transportation, and as for pollution, that is a matter of later story.

Qin Mu instructed them in front of the various processing tables, the surface of the parts that had just been produced and poured was still too rough, and the piston part of the steam engine could not be stuffed into it at all, although they could be forcibly assembled through thermal expansion and cold contraction, but once the slag was seriously worn out, the entire machine would be scrapped, and the purpose of further processing was to reduce the failure rate.

After the assembly is completed, it is necessary to debug the machine, so that the machine can run for a long time, find faults and improve them.

It has been debugged until the machine is running stably before being put into use for the stage experiment.

Qin Mu planned to spend a month debugging.

Next, he arranged for Empress Wu and others to record the debugging status of each time, as well as the problems that arise, to discuss with Uncle Zhang, and to give feedback to himself.

It's not that Qin Mu wants to be lazy, but to give them the opportunity to practice, after all, in the end, he needs someone to manage all this.

Tonight was another sleepless night, Qin Mu mobilized everyone to assemble the first complete machine, and named it - Tangwa No. 1.

The whole machine is about half a person high, and the part that is filled with water and fuel occupies most of the machine, and from a distance, the whole machine looks like a neat model train with no carriages and no wheels.

After a busy night, everyone looked at the machine in front of them excitedly.

"Thanks to everyone's hard work all night, now we are starting the first round of experiments." Qin Mu shouted.

Wu An shouted, "The Tangwa No. 1 steam engine experiment has officially begun. ”

The other five took out pen and paper and began to record.

The fire under the steam engine stove slowly began to turn red, and after five or six minutes the vent valve began to steam out.

Qin Mu pushed the air supply lever, neatly drove the piston to drive the brake lever through the pipe, and the steel wheels began to rotate slowly.

"It's done!" Wu An shouted.

"Okay!"

"Oh, chairman, this thing is amazing!" Uncle Zhang happily patted Qin Mu's shoulder.

Qin Mu stared at the machine motionlessly, the speed of the wheels turning was about the same as that of a donkey, as he expected, the tightness is not the biggest problem at present, but the bearing friction of the brake rod is too large and the loss of too much force, the torque is enough, and the speed is definitely insufficient.

"Well, let's go back and rest, and give you a day off today."

Qin Mu left the six of them plus Uncle Zhang.

"The next thing we need to do is to improve the friction reduction of the reciprocating motion between the connecting rod and the wheel, and the friction solution of the reversing valve."

After a long period of contact, they all knew the nouns and things that Qin Mu was talking about.

Qin Mu spent a drawing on the spot and handed it to Uncle Zhang, "Can this thing be made?" ”

Uncle Zhang looked at the round wheel, and there was something like a bead in it, "This can be made, but it takes a lot of steps." ”

"Time is not an issue, and I believe that as long as the roller bearings are corrected, we can move on to the next part."

This is a must for all equipment, and in the case of bicycle hubs, roller bearings have lower friction and higher efficiency than other types of bearings such as plain bearings, which are important for the performance and operation of bicycles. In addition, roller bearings have high load-carrying capacity and anti-wear characteristics, making them ideal for carrying loads and rotation on the rear wheel of bicycles.