Knowing that Yan Agu had died and had completely recovered the northern region of Goryeo, Cai Yi breathed a sigh of relief, but also couldn't help but feel a little stunned.

Be.

After Yan Agu was killed, the Jin people could not meddle in their own Liaodong affairs, and they could digest the land of Goryeo calmly and make it completely become Liaodong.

But in this era, the only one who can really become Cai Yi's opponent is Wanyan Agu, whether it is Zhao Ji, Zhao Huan, or Wanyan Wu Qimai, including Li Qianshun, Cai still has no fear of them, and he doesn't think that they will become his opponents.

Of course, blind self-confidence is a must.

After reaching a consensus on peaceful coexistence with the Jin State and sending Wanyan Zongpan away, Cai still ordered the class to return to the court.

Soon, Tsai was still forcibly introducing the new policies he had summed up in Taiwan and Yanyun in the eastern Liaodong region.

Any resistance was suppressed by Cai still with iron and blood.

The good thing is that -

Cai was still in the process of conquering Goryeo, and had already cleaned up the inherent elite class of Goryeo, so although the new policy that Cai still forcibly promoted was also met with some resistance, it was not big, at least not enough to cause trouble for the Liaodong regime.

While pushing the New Deal, Cai is still vigorously developing science and technology.

Soon after returning to Kaijing, Cai still drew more than 10,000 acres of land not far from the palace behind Shouchang Palace and allocated it to the Chinese Academy of Sciences.

This Chinese Academy of Sciences is a department established by Cai still not long ago, and he gathered all the craftsmen and craftsmen who are full of creativity and learning ability, and even found and concentrated the people of the Mo family, and then he himself served as the teacher of these people to guide these people on the road of scientific research.

In addition to teaching these people on the path of scientific research, Cai still personally presided over the research of some projects, such as the steam engine.

And to "invent" the steam engine, there must be a prerequisite to be solved - to make high-quality steel.

The cylinders, gears, and transmission rods of steam engines all require a certain quality of steel.

Therefore, if you can't solve the problem of steel quality and output, you can't talk about building steam engines, let alone building ships and trains, and laying railroad tracks.

But—

This is not difficult for Cai Ying, he is a senior and professional crossing author, and Cai still has a very complete theoretical foundation on how to improve steelmaking technology, which is a clear door, like what kind of blast furnace ironmaking.

Of course, it takes time for theory to be translated into practice.

While solving the steel problem, Cai still went straight to the "reciprocating" steam engine to "invent", and even, Cai still directly drew a reciprocating steam engine structure diagram, and then took it as a research direction.

In fact, the principle of the reciprocating steam engine is very simple.

Steam enters the cylinder from the steam boiler through the steam pipeline and the steam distribution device (spool valve room), and the piston in the cylinder reciprocates from one end to the other in order under the action of steam pressure. When one side of the piston is intake, the exhaust gas is exhausted from the other side of the piston. The piston is connected to one end of the connecting rod by means of a piston rod. The other end of the connecting rod meets the crank shaft, and the steam distribution device (spool valve) is driven by an eccentric wheel mounted on the crank shaft of the steam engine. When the piston moves to the right under the action of steam pressure, the slide valve moves to the left; When the piston moves to the left, the spool valve moves to the right.

Of course, principles are only principles, and there is still a long way to go before they can be truly turned into reality.

You know, you can't make a steam engine by understanding the principle, and there are many, many problems to solve.

For example:

Throttle valve.

Centrifugal governor.

Manufacture of steam boilers.

Relief valve.

Pressure gauge.

Each of these requires trial and error.

The good thing is that -

Cai still has insight and knowledge far beyond this era, and can lead a group of scientific researchers to avoid many detours.

Take, for example, the manufacture of steam boilers.

As soon as Cai still got started, he took out the drawings of the Lancashire boiler, allowing the researchers to directly cross decades of research.

In addition, Cai still has a lot of shortcuts to separate condensers, insulation layers outside cylinders, oil-lubricated pistons, planetary gears, parallel motion connecting rod mechanisms, centrifugal governors, throttle valves, pressure gauges, etc.

Moreover, Cai still has put forward the concepts of sand turning, annealing, polishing and other concepts (in fact, these technologies have existed before this, but they have not been used in industry).

Even, Cai still led people to manufacture the earliest lathe.

All in all, Cai's military internship when he was still a soldier was not wasted at all, and almost all of it was used.

As for coal and oil, that's not a problem at all.

Both coal and oil have been discovered and used in this era, even earlier.

Coal was used in large quantities in production and living in the Han Dynasty.

However, at that time, coal was not called coal, but was called annihilation, stone, black pill, etc.

It is recorded in the Han book, "Yuzhang is out of stone, and it can be burned as salary".

There are also records in many documents that coal has been used as fuel to make iron in the Western Han Dynasty.

After the Han Dynasty, there were more and more records about coal, such as the "Yuzhang Ji" mentioned the use of coal to cook rice.

It can be seen that the use of coal was already very common at that time.

In addition to iron smelting and cooking, there are also records during the Northern and Southern Dynasties that people used coal for heating at that time.

In the Song Dynasty, there was also a major change in the use of coal - the Song Dynasty began to use coke to make iron, which was a very important and epoch-making invention in the history of metallurgy, compared to Europe, China was hundreds of years earlier. At the same time, the Song Dynasty was also the most effective era for the development and utilization of coal in ancient times, and it was an era of large-scale mining and widespread use of coal in China. It was also in the Song Dynasty that "coal" officially became the name of coal.

Oil has also been around for a long time.

A few decades ago, Shen Kuo wrote in his "Mengxi Pen Talk Magazine I": "There is oil in the territory of Yanyan, and it is said that Gaonu County produces fat water, which is it. ”

And Shen Kuo was only the first person to record oil in writing, in fact, the Chinese have long known about the existence of oil and began to use it.

Therefore, it is only natural that Cai still uses coal and oil for steam engines.

Moreover, in order to facilitate research, Cai still imposed precise units of measurement.

Cai still took his own step as a meter - at that time, Cai still took a step in front of more than 100,000 people, and set that step as "one meter".

Later, Tsai still announced in public that this was the unit of length of his regime, and stipulated that one meter was equal to ten meters, one meter was equal to one hundred centimeters, one meter was equal to one thousand millimeters, and one kilometer was equal to one kilometer.

In order to be precise about this unit of length, Cai still had people make ten one-to-one bronze statues of himself as the original unit of measurement.

Judging from Cai Zhen's actions, it is not difficult to see that Cai is still ready to forcibly start the industrial revolution.

And so it is.

Any object, when in equilibrium from any external force or force, always remains in a uniform linear motion or at rest until an external force acting on it compels it to change this state;

In the case of a certain acceleration and mass, the magnitude of the acceleration of the object is proportional to the force, inversely proportional to the mass of the object, and proportional to the reciprocal of the mass of the object. The direction of acceleration is the same as that of the applied force;

The action and reaction forces between the two interacting objects are always equal in magnitude and opposite in direction, acting on the same straight line.

Soon after the industrial revolution that Cai still forcibly started, Cai still proposed the three laws of force, which solved the basic theoretical knowledge for the manufacture and application of machines.

Soon after, Cai added to the three laws of force that he proposed:

Force is what changes the state of motion of an object;

The force causes the object to gain acceleration;

Force is the interaction between objects.

As for the specific mechanical equations, there are so many years that Cai still forgets them, so he doesn't provide them, and let the future people slowly summarize them.

A revolution cannot be accomplished by one or two people, it must be promoted by countless people.

Now that the Industrial Revolution has developed, it is still impossible for Cai not to upgrade the weapons of his army, even if before that, the weapons of his army were already the most advanced in the world.

In this weapon upgrade, Cai is still mainly upgrading in terms of guns.

The first is the gun.

This time, Cai still ordered people to work ballistics and fire, and the ultimate goal was to develop a flintlock pistol with a high rate of fire and accuracy.

Prior to this, although Cai Zhen's army had been equipped with muskets and three-eyed guns, both of these weapons belonged to arquebuses, and the disadvantages were too great to be compared with flintlock pistols.

Compared with the arquebus, the flintlock pistol can be said to greatly simplify the shooting process, and improve the firing rate and shooting accuracy, and is easy to use.

Only such muskets can replace bows and crossbows and become the standard weapons of the army.

The point is that flintlock pistols are less expensive and also facilitate mass production.

In the last Europe, after the flintlock pistol was developed, it took a full 200 years to be equipped before it was eliminated.

However, again, it is impossible to study the flintlock pistol immediately, and even if it does, it is impossible to reequip all the five or six hundred thousand troops in a short time.

It takes time.

This is followed by artillery.

Unlike the previous unconscionable guns, which had a lot of problems because they couldn't help it, Cai is still preparing to develop real artillery, infantry guns, mortars, rocket launchers, etc......

Of course, this also takes time to develop and produce.

All in all, Cai is still ready to take advantage of the peaceful time of these years to pause the pace of expansion and settle down to vigorously develop ......

……

In the spring of this year, there was a severe famine in the Xi area, and in order to survive, the Xi people began to flee one after another.

Xiao Gan was originally training the army in Lulongling.

After hearing about this, Xiao Gan felt that the situation was very serious, so he decided to venture out of the mountains and lead his army south in search of food.

Xiao Gan's first target was Jingzhou (later Zunhua City, Hebei), Jingzhou is a county, under the jurisdiction of Jizhou, not long ago returned to the Great Song Dynasty, the Great Song Dynasty was renamed Luanchuan County.

After Xiao Gan conquered Jingzhou, he looted all the grain in the city and sent people to transport it to Lulongling.

When the news reached Yanjing, Wang Anzhong and Zhan Du were shocked and quickly reported it to the Zhao and Song courts.

Zhao Ji issued an order and ordered that the front line must solve the threat of this remnant Liao force to the Yanshan area of the Great Song Dynasty.

After receiving Zhao Ji's holy decree, Guo Yaoshi ordered Zhang Linghui and Liu Shunren to lead 5,000 soldiers and horses each to Shimen Town and occupy the pass there.

Shimen Town is under the Lulong Mountains, not far from Xiao Gan's base.

Pharmacist Guo wanted to cut off Xiao Gan's retreat first, and then fight him head-on.

What Zhang Linghui and Liu Shunren did not expect was that Xiao Gan had received the news that Guo Yaoshi was preparing to attack him, and quickly returned to the division and set up an ambush on the side of the road southwest of Shimen Town.

Zhang Linghui and Liu Shunren were defeated by Xiao Gan and fled.

Xiao Gan took advantage of the victory and advanced, and soon captured Jizhou (later Jixian County, Tianjin), and his troops came to Yanjing City, and then plundered everywhere.

Xiao Gan's troops were very sharp, and he threatened to cross the Yellow River and attack Bianliang, the capital of the Great Song Dynasty.

For a time, the Zhao and Song courts were in turmoil, and some ministers were even planning to give up Yanjing.

Tong Guan did not agree to give up Yanjing, and he personally wrote to Wang Anzhong, Zhan Du, and Guo Yaoshi to ask about the unfavorable military situation.

Wang Anzhong then ordered Guo Yaoshi to personally lead the army to attack.

Pharmacist Guo knew that Xiao Gan was cunning, so if he wanted to deal with Xiao Gan, he had to be surprising to win.

Xiao Gan has a general named Yelu Aguzhe, this person is very greedy for money, Guo Yaoshi knows him, so he sent someone to Lu Longling quietly, spent a lot of money to buy him, let him provide information in time, find out Xiao Gan's movements, and find an opportunity to destroy Xiao Gan.

Soon, Pharmacist Guo learned that Xiao Gan had left Lulongling again and was operating in the area of Waist Pu Town.

Pharmacist Guo decided to personally lead the main force to the decisive battle.

Guo Yaoshi's troops were divided into two routes, one was led by Zhang Linghui and Liu Shunren, and continued to march to Shimen Town along the main road to cut off Xiao Gan's retreat; He led another road to Hongzhuang and Xiaogang, quietly detoured from the west, and went straight to the town of Yuanpu.

In the battle of Waist Pu Town, Guo Yaoshi caught Xiao Gan off guard.

Xiao Gan hurriedly retreated to Lulongling, and when he reached Shimen Town, he was attacked by Zhang Linghui and Liu Shunren's troops.

Xiao Gan lost his armor and suffered heavy losses, leading the remnants of the defeated army to flee to Fengshan in a hurry.

Guo Yaoshi decisively ordered the whole army to pursue.

Chang Shengjun then took advantage of the victory to chase after him, chased Lu Longling all the way, and fought a decisive battle with the remnants of Xiao Gan at Fengshan.

More than half of Xiao Gan's horses were killed and wounded, and the families of the army, as well as vehicles and food, were all captured by the Changsheng army, and more than 5,000 people from the Xi, Bohai and Han armies surrendered to the Changsheng army.

Moreover, the Chang Shengjun also captured Alu Taishi alive, and obtained a number of treasures such as the treasure inspection of the Liao Taizong Yelude Guangzun and the Khitan gold seal.

The victorious army won a complete victory, and the morale of the army was greatly boosted.

After Xiao Gan and his subordinates broke through the siege, they hid in the homes of the Xi people.

Xiao Gan was very sad about the rout of Xi Jun, but he still did not give up, he planned to lie down and try his courage, Taoguang and obscurity, and make a comeback in the future.

However, what Xiao Gan didn't know was that his cronies were desperate for the future, and death was approaching him step by step.

In mid-August, that is, a few days before Wanyan Agu's death, Yelu Aguzhe, Yimu Bajin and Bai Dige attacked and killed Xiao after some conspiracy.

A generation of heroes ended their tragic lives in this way.

……