Time passes in valleys, in rivers, in cold winds, in people's hearts......

Chongzhen's three-year year is approaching.

A month has passed since the night of the change of the day in Binh Duong City.

Wax month, New Year's pass.

A summary and a busy leisure time for everyone in Huaxia.

After a busy year, you need to summarize the harvest and pay at the end of the year, whether it is proportional, and you need to consider how to live the next few days, continue or change.

For Luoliang Mountain, for Tang Xidong, everything is not needed, just keep moving forward and keep running.

Laying down a city and quietly occupying a city is a sky-breaking thing for others, and for the rebel army, it is gold and silver treasures, and beautiful women's food.

But for Tang Xidong, it is just a turning point in his future life plan in Daming.

Pingyang City doesn't seem to have changed much in the passage of time, and what Tang Xidong is asking for at the moment is just a stable Pingyang City, because his center of gravity is still on Luoliang Mountain for the time being.

There are also industrial processes there that he needs to continue.

There are 10 million taels of silver and 1 million quintals of grain in Pingyang City, which is enough to support his industrial construction.

Over the course of a month, Tang Xidong became even busier, needing to travel between Pingyang City and Luoliang Mountain.

Outside the city of Pingyang, a large field was opened up as a training ground for the newly recruited 5,000 people and horses of the Pingyang Guard.

Li Shangquan still served as a training envoy of the new army, training the newly recruited soldiers day and night.

Jia Hu and Zhang Sanshi were in charge of the defense of the entire city of Pingyang, as well as the monitoring of the city's officials, landlords, and wealthy merchants.

Except for the addition of a training ground, there are no other changes.

Tang Xidong would not easily change the previous decree and state of Pingyang City, before he had enough control power.

In Luoliang Mountain, fifteen coking kilns have been operating at full capacity.

The newly built cement plant is also constantly trying to calcine cement.

Cement calcining kiln, is the cylinder of the kiln body, from the bottom to the top are the combustion furnace, the calciner, the blanking furnace and the chimney, the kiln body from the bottom to the top slowly close, the combustion furnace has an ash outlet and a coal inlet, used to take out the ash and add fuel, between the combustion furnace and the calciner with a layer of herringbone iron furnace strip separation, the iron furnace bar stuck in the kiln body open two mouths, an air inlet, a discharge port.

Then there is a row of iron bars between the calciner and the blanking furnace, as long as the iron bar is pulled out when blanking, it can be automatically unloaded, and when it is not unloaded, the iron bar can be inserted to seal the material mouth, and then it is the chimney.

The air inlet is followed by two hand-cranked blowers to assist in the air intake.

The ready-mined limestone is sorted and mixed with clay into water into a small round block, and then put into a calciner, the fuel is a combination of pulverized coal and coke, after calcination, the black ink clinker is discharged from the discharge port, and then it can be manually crushed with a grinding disc, and then a small amount of gypsum is added.

So the cement becomes.

The calcination of cement has been going on for half a month, but the burned cement is always not satisfied.

Tang Xidong had to let the workers of the cement factory continue to experiment, one is the batching, the other is to control the heat.

Occasionally, there was a furnace of clinker, and after it was fired, it reached the ideal state in the experiment, but the blind cat ran into a dead mouse, and the next furnace returned to its original state.

Tang Xidong was exhausted by the toss, but the temptation of cement forced him to continue to cheer up and mix with the workers all day long.

In contrast to the cement factory, the iron and steel plant, at this time, the Ming Dynasty had already appeared in the iron-making industry, and the copycat Xu San Province knew the operation of the iron-making furnace, while Tang Xidong was just improving the iron-making furnace.

In the principle of the original ironmaking, improve several aspects, one is the selection of ore, the current cottage mining shaft, the ore mined is limonite, not a rich ore nor a poor ore, the iron content is in between.

Tang Xidong's selection is to bake the ore once before the official ironmaking, add a small amount of limestone, and remove the miscellaneous stones, slag and sulfur in it.

After roasting, the ore is divided into blocks of twenty or thirty centimeters.

The second is the improvement of the iron-making furnace, plus the air inlet, the blower is used to improve the combustibility, and the slag outlet and the tap hole are set respectively.

The third is the improvement of fuel and ingredients, the fuel is coke with less sulfur, and the ingredient is to add a small amount of limestone.

Just three small improvements have greatly improved the quality of pig iron, far exceeding the current level of the times.

And ironmaking and steelmaking are two-step.

After the pig iron is smelted, it is tempered a second time and turned into steel.

At present, mechanization is difficult to reach the level of blast furnace steelmaking and converter steelmaking, so Tang Xidong has to borrow the method of frying steel.

Pig iron, iron ore and limestone are smelted twice in a small steelmaking furnace, and after the iron slag is removed by hand rods, the iron lumps are pumped out and then beaten by manpower.

This method of frying steel also has advantages, that is, the furnace is small, easy to operate, after a second calcination, and then beating does not need to be too laborious and time-consuming.

After the steel plant was supervised and guided by Tang Xidong, a batch of good steel was really produced, and Tang Xidong handed over the next thing to Xu Sansheng to do, and the other party was also very clear about the principle of ironmaking and steelmaking.

Besides, in fact, there was a steel frying method in ancient times, and Tang Xidong just made a little improvement, which is not a new thing from beginning to end compared with the cement factory.

After the steel was refined, Tang Xidong finally felt that the industry in his hands had weight, and it was no longer as empty as before.

Steel is an important resource in any era, and today's Daming has risen to the status of a strategic resource.

In Tang Xidong's hands, there is already high-quality steel that far exceeds the industrial level of this era.

Refining steel is to arm himself, and since steel is already available, the next step is to make the envisioned advanced weapons.

During the time of making cement and experimenting, Tang Xidong took time out to prepare for his own weapon manufacturing.

In the face of the Tatar cavalry, the disadvantages of thermal weapons can easily be revealed; first, the interval between the reload times is too long, and second, the problem of the quality of the firearms; the explosion of the chamber has become an almost common phenomenon among the firearms, and after a long time, a sense of distrust and fear of firearms has appeared in the hearts of the officers and men. Third, in case of rain or once the gunpowder has been left for a long time, once it is wet, the entire firecracker team will be in a state of waste wood.

Tang Xidong knew that according to the current industrial level, if you can't make thunder mercury, you can't make bullets, so even if you can make a firing pin, it's a waste product.

Then what you can do is to take the first step in the firearm and try your best to make the flintlock pistol.

Make a flintlock pistol first, and then slowly improve on the flintlock pistol if possible.