Becoming a stepmother of three children gives me space

Xiao Yunxi returned to the teahouse's private room and informed Liu Lu to send someone to monitor the movements of the Dongyi fleet.

Flash cannot be used indefinitely. She only checked half of the Dongyi fleet and found that there were a lot of food and weapons hidden under the deck of the ship.

There are about 2000 more soldiers, and the total number of people in the entire fleet is probably 5000, not counting those who have been sent out.

The Dongyi secretly transported people to Daxia. It is impossible that they wanted to do good deeds in obscurity. If they could not be found, they would be a time bomb that could explode at any time.

The secret guards will monitor and report to the emperor when they find their temporary camp. This involves diplomacy, and the secret guards cannot handle it privately.

Leaving half of the team to escort the rubber, she rushed back to the capital early and immediately went into the laboratory.

The vulcanization of natural rubber is a necessary process for the use of rubber.

Without vulcanization, the linear macromolecules are in a free motion state. When subjected to external forces, the macromolecular chains are easily displaced, forming plastic flow.

After vulcanization, the long-chain molecules become a spatial network structure, and the relative movement of the macromolecular chains is restricted, making it difficult for large displacements to occur.

It also has better stress and tensile strength, making the rubber more elastic.

Vulcanization is not difficult to say, but it is not simple at all. Xiao Yunxi needs to keep trying, and trying means loss. The rubber Zhou Jin sent was almost ruined by her.

The quantity of rubber from Yue State far exceeded the batch Zhou Jin brought back. Through open experiments, they quickly obtained the desired rubber material and began to make rubber tires.

Modern bicycle tires are usually made of a mixture of natural rubber and synthetic rubber to make pneumatic tires, which are lighter and easier to install and remove.

Xiao Yunxi couldn't make synthetic rubber for the time being, and the technology for making pneumatic tires wasn't available yet, so she used vulcanized natural rubber to make solid tires.

Compared to pneumatic tires,

Solid tires are heavy, have poor shock absorption, and are more difficult to ride, but they have no risk of air leakage, a long service life, and good wear resistance.

Theoretically, as long as the road conditions are not extremely bad, the performance of solid tires will not be much different from that of pneumatic tires.

Xiao Mansion Laboratory,

Zila, Zila, a harsh sound was heard, but Liu Lu, who was guarding outside the laboratory, remained calm. In the past two days, similar sounds were always heard from the laboratory.

"Sister Liu, what is Madam doing?"

"The sound is creepy."

Liu Lu's face darkened and she scolded:

"Don't ask questions you shouldn't ask. Go on patrol."

The guards scattered like birds and beasts,

They are all ordinary soldiers patrolling the periphery to protect the servants and ordinary people in the mansion. The real security work has to be done by the secret guards.

The west wing was divided into two parts, north and south, as required.

The south side, adjacent to the front yard and the second courtyard, remains as it was.

The northern part was completely demolished, and two walls, 2 meters high and 6 meters high, were built in the shape of a Chinese character "U". There was a 15-meter open space in the middle of the inner and outer walls.

There are 8 corner towers at the four corners of the inner and outer walls, overlooking the entire laboratory with no blind spots. Secret guards are monitoring it 12 hours a day.

To enter the laboratory, one must pass through two iron doors, one inside and one outside. Both doors weigh thousands of pounds and require gears to open.

In the space between the inner and outer walls, there are secret guards standing guard at the four corners. It can be said that the place with the strictest security in the Xiao Mansion is not the main courtyard, but the laboratory.

Zila, Zila,

The sharp and piercing sound came again.

in the laboratory,

Xiao Yunxi was wearing a steel helmet that left her eyes exposed, polishing bicycle parts.

Zira,

Sparks flew from the machine tool.

Bicycle accessories are difficult to make, except for rubber tires, steel wires and bearings.

Steel wire needs to undergo multiple drawing and heat treatments before it can be processed into high-precision steel wire with specific diameter and strength. Bearing steel balls require advanced blast furnace technology.

With the current level of steelmaking, it is undoubtedly a pipe dream to reach the standard.

Xiao Jiazhuang baked the frame, wheels, bearings and other accessories, and she used a machine tool to polish them. The method was a bit clumsy, but fortunately it was useful.

"Brother, this machine tool looks like the one in the northwest."

The children also helped in the laboratory, but the polishing process was too dangerous, so Xiao Yunxi didn't let them get close. Three of them were responsible for assembling the bearings.

In response to Xiaobao's question, Dabao directly denied it:

"That machine tool was in the northwest, how did it appear here? It was rebuilt by my mother."

"Oh."

Xiaobao just asked casually and soon focused his attention on the work of assembling the bicycle. His mother said that this bicycle was a real bicycle.

He couldn't wait to build the bicycle.

Dabao wanted to look at the machine tool, raised his eyebrows, then lowered his head and continued to work. The machine tool is new, the machine tool is new, the machine tool is new.

Xiao Yunxi was concentrating on polishing and didn't realize that the child's perception was so sensitive.

It is not wrong to say that the machine tool is the one from the northwest, but it is also acceptable to say that it is not.

After producing the steel, she immediately upgraded the machine tools. Almost every part of the machine tools was new.

Like Theseus' ship,

If the wood on a ship is gradually replaced until all the wood is no longer the original wood, is the ship still the same ship?

If all the parts of a machine tool are gradually replaced, will the machine tool still be the same?

Maybe for her, it doesn’t matter whether it is the original one or not, what matters is that it is better than the original one. But for the children, the original one was pieced together by them bit by bit, so the feelings are naturally different.

Fortunately, Xiaobao just asked casually. Dabao was a thoughtful person. He had noticed the difference in his mother a long time ago and kept the secret silently.

Zila Zila,

As the last part was polished, Xiao Yunxi took off the heavy helmet and rough goggles.

Her forehead was covered in sweat and her eyes were full of fatigue, but when she saw the four sets of polished bicycle parts, all the hard work turned into joy.

"Mom, can the bicycle be made soon?"

"Of course!"

"awesome!"

The steel balls have been installed in the bearings and rapeseed oil has been added. The next step is assembly.

While Xiao Yunxi was helping the children assemble bicycles, the Fourth Prince, for some unknown reason, actually started selling the batch of colored glass.

Although they used the channels of the Treasure Pavilion to contact the guests privately, there is no wall that is impenetrable, and the Second Prince soon got the news.

"You're so brave! You stole my things from the Treasure Pavilion! And you even dared to sell them!"

Zhao Zhen was furious.

If you dare to snatch things from him, how can you survive in the capital if you don’t teach him a lesson?

“Get your weapons!”

"Search the entire capital. If you find anyone selling colored glass, arrest them."

"Anyone who dares to buy this batch of colored glaze will be in trouble with my Chu Palace!"

He is usually domineering in his actions. This time he thinks he is right and is not afraid even if the matter is exposed.