Small courtyard.

Su Yang was concentrating on drawing drawings.

I haven't been here since that day when I came to visit.

In fact, Su Yang also understood in his heart that the old gentleman was angry with him.

After all, Tyrant Zhao is a loyal and patriotic pure minister and good minister, you can be a madman and accuse the king of mistakes, but you can't persuade a pure minister to betray his monarch, which is tantamount to humiliating him Tyrant Zhao.

Therefore, Tyrant Zhao was rarely angry with Su Yang, and he never came back since.

Although Su Yang felt a little guilty about this, he did not regret his choice.

Because, he is saving Tyrant Zhao, a pure minister.

With a master like Jianwen Emperor Zhu Yunwen, there will be no good end!

Even if Zhu Di, the king of Yan, failed to rebel, but the Ming Dynasty entered the Jianwen era when the Xiucai court was in charge, with the old man's upright temperament, he would sooner or later not be allowed to the court!

So, it's better to get out as soon as possible.

As for Xiaowan's family, Su Yang has not been seen for several days.

I think it was the imperial court's Qincha team that arrived in Beiping, and the Yan Wangfu had to deal with it with all its might!

But this is a good thing, after all, no one has come to disturb the peaceful life of their husband and wife.

Su Yang is now busy drawing drawings, and in his spare time, he teaches his little daughter-in-law to learn arithmetic, and if he is bored, he goes out to the market together, and lives a peaceful and happy life.

It's just that the only difficulty is in the matter of drawing drawings.

Although there is a brush at home, it is okay to write Su Yang with a brush, but it is a little difficult for him to draw with a brush.

The lines were too thick and the ink was too thick, Su Yang tried several times, and finally gave up.

"Xianggong, what are you thinking?"

"I'm thinking about making a pen."

"Isn't there a brush at home?"

The little girl was stunned for a moment, and she didn't quite understand.

"The brush is too thick for drawing."

"Hmm...... I've seen those painters before, and they all draw with special thin brushes, which are as black as charcoal......"

Hearing this, Su Yang's eyes suddenly lit up, he slapped his thigh, hugged the little girl and kissed her directly, and then ran to the kitchen in a hurry.

Zhu Wanqiu was confused by Su Yang's "sudden attack", and was directly stunned in place, and then her little face turned red.

"Oops...... Is...... In broad daylight...... No shame! ”

The little girl complained a few words, and then followed curiously.

I saw Su Yang take out a few red coals from the stove with a shovel, and then brought a scoop of cold water.

Crash!

Suddenly, a cloud of white gas burst out, dust splashed, and a mushroom cloud rose, and the little girl was so frightened that she stuck out her tongue, looking very cute.

After the charcoal had cooled completely, Su Yang reached out and picked it up.

Seeing the little daughter-in-law standing there with curiosity on her face, Su Yang suddenly laughed and said, "Xiaowan, hurry up and wash it, it's all a cat face!"

The little girl was stunned, she was so ashamed that she hurriedly covered her face, turned around and ran, and Su Yang's laughter came from behind her.

In front of the basin, peeking through his fingers, his delicate face was covered with dust and charcoal, a little black, and a little gray, just like a little beggar.

"Ugly dead, ugly dead! It's a joke again! The girl hurriedly held the water and washed off the dust, but she was still not at ease, so she ran to the mirror and looked left and right, for fear of a little flaw.

Just when Zhu Wanqiu was looking forward to self-pity, Su Yang had already drawn a three-dimensional picture with charcoal, which was not a mysterious thing, it was the most common stove in later generations.

After the little girl finished washing, she jumped and ran over, and her eyes instantly widened when she saw this painting.

Although she is not good at the technique of danqing, she is also too realistically drawn, and it immediately attracts her attention!

"Xianggong, this ...... This thing is a stove, right? ”

"That's right!"

Zhu Wanqiu frowned suddenly, and couldn't help but say: "Although the iron stove is smaller than the stove, the price is also expensive, I'm afraid no one will buy it." ”

After spending so much time with Su Yang, the little girl has also learned some common sense of life.

Su Yang smiled and nodded, "But it's more convenient than the stove, as long as you put charcoal fire in the chamber, you can not only keep warm, but also barbecue meat, and cook." ”

"Besides, this stove is not used to sell for money, and the family has enough money to live."

"The cold winter is coming soon, you have to go out as little as possible in the future, this stove is for you to heat, with this stove our family Xiaowan can have a warm winter!"

Hearing Su Yang's words, the little girl's eyes turned red instantly.

She thought that Su Yang was making up a drum to sell money again, but who would have thought that Su Yang was for herself.

Recalling that Su Yang had been busy drawing drawings for the past few days, the little girl's heart felt more and more intense, and she hid directly in Su Yang's arms.

"Xianggong, you're so nice!"

"Silly girl, what are you talking about?"

Su Yang smiled and comforted his daughter-in-law a few words, and then began to draw with charcoal again.

The stove is there, but the problem of charcoal fire has to be solved.

You must know that in this Ming Dynasty, charcoal is also a very expensive thing.

In the absence of air conditioning and heating, the people of the Ming Dynasty can have only a handful of heating fuels, which are nothing more than charcoal, coal and firewood.

Among the three, charcoal heating experience is the best, but the price is extremely expensive, and generally only princes and nobles, dignitaries, and wealthy businessmen can be equipped!

Because charcoal burning is also a very hard physical work, the mountain people have little time to rest from morning to night, from chopping wood to cutting wood into sections, and then chopping wood, building kilns until burning charcoal, it takes about ten days.

Moreover, the firewood collected is generally hardwood, so that it can be fired into a high-quality firewood that is resistant to burning and smokeless.

For example, the royal charcoal of the Ming royal family for the winter, is the "red basket charcoal", all of which are burned by the hardwood in the mountains in Yizhou, each long ruler, the garden diameter is two or three inches, the air is warm and durable, gray and white but not explosive, and there is a slight aroma when burning!

But this kind of high-quality charcoal is scarce and expensive, even if even the royal family is not enough to use it for a long time, let alone the common people!

In this era, ordinary people want to keep warm, the rich people burn charcoal, and the poor can only burn firewood.

Although charcoal is time-consuming and laborious to fire, it is very popular with wealthy people because it burns more fully and does not produce too much smoke.

Well, after all, it is a person with status and status, in line with their vassal elegance

The firewood is different, only once burned, it will suddenly be smoky, and the poor people need to go out of the city to harvest, which seems to be cheap, but in fact, it costs a lot.

As for coal, no one dares to use it in this era.

Ordinary coal will produce a lot of smoke, and because there are too many impurities and too high sulfur content, it is equivalent to toxic smoke when burned.

In later generations, the honeycomb coal and briquettes commonly used by people actually need to be refined, that is, the step of "coal washing", but in this era, if you want to wash coal, the process is too difficult, and there is almost no feasibility.

However, anthracite is different in that it has a very low sulfur content, and most importantly, it burns colorless and smokeless, and burns for a long time, making it an excellent cold fuel.

If Su Yang is not mistaken, there is an anthracite coal producing area in Beiping, located in the upper reaches of the Yongding River in western Beijing, on the east side of the Dahanling, that is, the place in Xishan outside Beiping, with an annual output of millions of tons of high-quality anthracite in later generations!

It seems that if you want to produce this anthracite, you have to bring Guo You and these gentlemen together.

If the plan goes well, anthracite can enter the market at a parity and save some people in Peiping Province from freezing to death in this cold winter!

After all, when Daming came, under the premise of having the ability, Su Yang still wanted to do something for the people.

At least, they can't watch them starve to death and freeze to death!