The cold wind is whistling, and after the winter, Liaodong is getting colder and colder day by day, and the days are passing faster and faster day by day.

It's November.

Although more than ten experiments have been completed, Yang Chengying still does not dare to announce in public that the steam engine has been successfully developed.

We have to wait a little longer, and the new machine must be tested at least 100 times, so that the workers involved in the development can understand it thoroughly before it can be announced.

"It's so cold!"

Mao Yuanyi and the others got into Yang Chengying's house, dusted off the snowflakes on their bodies, and trembled to sit down by the charcoal basin, stretching out their hands to bake the fire.

One by one, I felt the warmth and slight pain from the palms of my hands, and exhaled comfortably.

Yang Chengying opened the window.

On the one hand, because there is a thick cold-proof curtain hanging on the door, if you don't open the window, you may be poisoned by carbon monoxide.

On the other hand, Yang Chengying is writing an operation manual to be used in the future based on the bright light reflected by the snow outside the window.

Finding that everyone had arrived, Yang Chengying put down the brush and turned his head to look at them: "You bake the fire for a while, and I will finish writing soon." ”

"What did you write?"

Mao Yuanyi asked curiously.

This is also a question that Sun Yuanhua, Song Yingxing and others are curious about.

"Steam Engine Operator's Manual."

Yang Chengying picked up the pen and buried his head in writing.

Everyone suddenly realized.

In the process of developing the new machine, various problems have arisen, although they have been solved one by one, but in the final analysis, the operation is not standardized.

Repeatedly asked them to pay attention to the operation process, and many people either forgot this or that.

Since the lathe is still in its early stages, the error of the manufactured parts is already large, and then there is the problem of artificial manufacturing, and how many materials are wasted.

After all, the steam engine was invented, not as an ornament, but as a popularization.

If it is wasted, the gold and silver mountains will be empty.

About a quarter of an hour passed, Yang Chengying put down the brush and blew the ink on the paper.

It's finally finished.

Yang Chengying moved his neck and said: "I have something to go on a long trip, you follow the ideas I have set, continue the experiment until I come back." ”

"Got it. Please rest assured that we did not have a day of relaxation. ”

After Mao Yuanyi finished speaking, he asked by the way: "Where are Jingluo going?" ”

"He Huchen, the chief soldier of Ningxia, fell into Lin Dan Khan's trick to lure the enemy and unfortunately died. The governor of the three sides, Hong Chengchou, was encircling and suppressing the peasant army, and he couldn't spare his hand. ”

Yang Chengying said: "I will lead the cavalry out of the fortress and attack Lin Dan Khan in Ordos. ”

This happened in October of that year, when Lin Dan Khan relieved himself and led the Mongolian cavalry to invade Ningxia from Qingshui and Hengcheng.

He Huchen led his troops to resist, but in the battle, he mistakenly regarded the enemy's retreat as a rout, and ordered the whole army to pursue.

In the end, he was ambushed at Humber Castle, outnumbered, and killed in battle.

When Chongzhen heard this, he was furious and ordered Yang Chengying to lead his troops to attack Lin Dan Khan.

After chatting for a while, the ink on the operating manual has dried.

Yang Chengying handed the manual to Mao Yuanyi and said, "You all take a look, if you don't understand anything, you can ask me." ”

Everyone gathered together to read the operating manual by the light of the fire and the light of the lamp.

The operation manual uses a question-and-answer method to vividly introduce various situations of the steam engine.

"What is scale?"

Sun Yuanhua asked curiously, "Why do you need to check the boiler regularly?" ”

"In the final analysis, the steam engine boils water, and there are certain requirements for water."

Yang Chengying explained: "But if you are running outside, it is impossible to find good water anytime and anywhere, so you need to be careful.

The steam engine has been running for a while, and the boiler should be checked quickly. Clean the scale inside in time to prevent the scale from being too thick and affecting the efficiency. ”

"What is efficiency?"

Song Yingxing asked.

"To use a simple analogy, if you act quickly, you are efficient, and if you are slow, you are inefficient."

Yang Chengying said with a smile.

Everyone thought for a moment and nodded reluctantly.

"My subordinates feel that it is unrealistic to let everyone master it, and we have to let a group of people master it first."

Mao Yuanyi said: "If everyone masters, they have to wait until the Year of the Monkey." ”

"Yes. Choose loyal, reliable, and clever people to learn first. ”

Yang Chengying said: "I don't have time to teach everyone by hand, so I need to spend some time on everyone's shoulders. ”

"Yes."

Mao Yuanyi and the others hugged their fists.

"One more thing!"

Yang Chengying emphasized: "Before I officially announced it, no one should say that the steam engine has been successfully developed. ”

The news of the successful development of this "big killer" should be announced at the right time.

Pragmatism comes first.

"Understand, we'll keep the people down there tight."

Mao Yuanyi nodded.

Yang Chengying nodded and began to discuss the contents of the operation manual with them.

As for the question of whether it will be leaked, Yang Chengying is actually not worried at all.

It's like the operation diagram you see on TV, you can understand it, but you may not be able to rub it out by hand.

Because there's a key factor in that, people!

You must know that Yang Chengying has been doing ordinary education for the people for nine years.

It is about to enter its tenth year.

Since the first year of the Apocalypse, skilled workers have been trained for nine years.

It has been four years since Song Yingxing arrived in Liaodong Town.

After such a long period of education, practice, etc., the situation is still in constant place in the process of developing the steam engine.

Even if they found out that there was a steam engine, it would not help to dig up one or two people to leave.

What's more, it may not be dug up.

Stayed in the compound for three days and basically solved the problem with the operation manual.

On the seventh day of the first month of November, that is, the time when the peasant army moved to Shaanxi, Yang Chengying led his guards to Daning City.

A cavalry drawn from the Second Army has been waiting in Daning City for a long time.

This cavalry was not very numerous, only three thousand people.

Led by Deputy Army Commander Zu Dabi.

This time, the purpose of deliberately bringing only the reorganized Second Army, which was born in the Guanning Army, was to give them the opportunity to make meritorious contributions and at the same time cultivate their ability to get out of the fortress.

In addition, Karaqin Zasakkulu Siqibu, the left wing of the Tumut Division, the right wing of the Guluge, and the Hongjira tribe of Zasak Zaisai all had to send troops to assist.

The total strength of the army reached nine thousand people.

In order to provide food for so many people, the reorganized Second Army used Lele carts, which were loaded with a large amount of supplies.

On 21 November, the departure ceremony was held in accordance with the usual practice.

In the early morning of the 22nd, Yang Chengying led the army to the battle.

Following the route of the last time, the army encountered few enemies along the way.

Soon, on December 29, he came to the city of naturalization again.

Here he met with the envoys of the Heshute tribe of the Oirat tribe, the Tibetan Zangba Khan, the Gelug sect, the Transkhalkha Chotu Khan, and the Chechen Khan.

He Shute Ministry, Zangba Khan, Gelugpai, and Chotu Khan fought inextricably.

But at this time, for the same purpose, they all chose to pretend to be peaceful and meet Yang Chengying.

Chechen Khan Shuolei chose to meet Yang Chengying under the mediation of the Great Summoning Living Buddha for another purpose.

Just when the banquet was being held, news suddenly came that Lin Dan Khan led his army to attack!