After visiting the cement factory, it was already past noon, even if Li Mu was not sensible, he couldn't let Li Shimin eat with the Liba people in the factory, but the county government was a little too late, there happened to be a Sanqing Temple nearby, clean up, it was still clean, and the place for dining was selected here.

This really caught people off guard, but fortunately, Li Shimin was not pampered, and when the palace was poor, he didn't eat much better. Li Mu asked Dugu Jiu to make some game in the mountains, and directly came to a barbecue, and with the blessing of fennel in the Western Regions, he was very happy to eat.

After eating, Li Mu asked Li Shimin when he would go back, but Li Shimin glared at him and said, "Why are you in a hurry to drive me away?" Tell you, I won't go back today, I'll rest here, and you will stay with me. ”

Li Mu scolded secretly in his heart, Lao Tzu is a ghost with you, and the little secretary who has just entered the house will not accompany you, and he will accompany you as an old man...... But he only dared to think about it, and he would never dare to say it. Li Mu smiled and agreed, and ordered the guest room to be cleaned, burned with fragrance, laid out new seats, and made some refreshments and preserves, this season, this kind of place, these things are really not good, but Li Mu can get it, Li Shimin is not surprised at all, he usually eats and wears clothes, he is used to being extravagant and wasteful, and it makes people feel strange if he doesn't.

In fact, Li Mu didn't ask about these trivial matters at all.

But who makes the family blessed? You don't have to worry about it yourself at all, the little secretary at home has already arranged it. When there was no little secretary in the past, several women in the family also rushed to think about him, and when he just wanted to say a word, someone sent it to his mouth.

It can be seen how important it is to have a good woman behind a successful man, Li Mu is not only a virtuous helper, but also a blessing from his previous life.

……

In the apse, Li Shimin bathed, freshened up, and changed into ordinary people's clothes, becoming more and more approachable.

Li Mu had already made tea and waited, and when he saw Li Shimin coming, he looked like a eunuch: "Your Majesty has worked hard, please use tea." ”

Li Shimin picked up the teacup and took a sip, the best Longjing tea brought back sweetness, which made people forget to return.

"I didn't like to drink tea, I liked to drink. But since you came out with this kind of fried tea, I don't like to drink now, but I like to drink tea. Li Shimin clicked his lips and said: "Tea is bitter first and then sweet, and tasting it is like life." ”

Li Mu was too lazy to talk to Li Shimin about the big truth of life, he couldn't wait to put Li Shimin to sleep now, so he could go back to the little secretary to chat and talk, and when he heard his words, he just smiled perfunctorily and didn't say anything.

Li Shimin seemed to see what he was thinking, pointed at him and scolded with a smile: "I don't know who gave you the bear's heart and leopard gall, and actually married Wei Zheng's daughter, and you are such an old man, are you not afraid that he will join you in the future?" ”

"Ginba?" Li Mu looked like a dead pig was not afraid of boiling water, and said: "If I die, his daughter will be widowed, if he can do it, then the minister will be convinced." ”

"It turned out to be the idea of fighting." Li Shimin smiled, and knew that Li Mu was talking nonsense. He and Wei Zheng are both strong-willed people, and they will definitely not change their original intentions because of an extra layer of relationship.

"Since I came back from beating you, I forgot to ask you one thing, Qi-Shu Li You, how is it now, his mother is very worried about him."

"Shurenyou," Li Mu felt fresh when he heard this word, but he couldn't bear to cancel Li Shimin, so he said; "He's doing well now, working as a librarian in the Literature Museum. I deal with books every day, and I read books in my spare time. After all, if he is literate, he can't do anything for the time being, but if he is willing to learn, there is no shortage of well-educated people in the Literature Museum, and he may not be able to become a talent in the future. ”

"That's good-" Li Shimin sighed and said, "The shaft is disobedient, if he had worked so hard earlier, how could he be like this?" ”

"What's next for you?" Li Shimin pulled the topic away and asked, "I heard that you have invented a new thing called honeycomb coal?" ”

Li Muxin said, you are really well-informed, this thing has not been made for a few days, and you know the news again, you can see how many eyeliners have been planted around me.

I knew it, but I couldn't show it, and said: "Your Majesty doesn't say it, and the minister will show it to Your Majesty." ”

As he spoke, Li Mu got up and said to Li Shimin: "Your Majesty, please wait a while, and the minister will arrange it." ”

Li Shimin motioned to Li Mu to take care of himself, Li Mu turned around and went out, and after a while, he came back and said to Li Shimin: "Please move to the firewood room and show the honeycomb coal for Your Majesty." ”

"I'm going to take a look." Li Shimin got up, Gonggong Gao brought a fur to Li Shimin to put on, and followed Li Mu to the firewood room.

On the edge of the firewood pile in the firewood house, there is a small pile of pulverized coal, as well as a pot of loess, a pot of slaked lime, and a pot of sawdust. Li Mu commanded a Jinyi guard, dug four pots of pulverized coal with an iron shovel, added water, slaked lime and loess and stirred evenly.

After making these preparations, he went into battle himself.

I saw that he brought a mold of honeycomb coal, dipped it in water into the mold barrel, and then buckled it in the mixed coal slurry.

After compacting his hands, Li Mu lifted the mold and moved to a clean place to put it down.

Then he held the pole on his belly and lifted the cylinder with both hands, and a honeycomb coal the size of a bowl and a large lotus root was made.

"Good!"

Gao Gonggong deserved to be an old man, and took the lead in shouting.

Li Shimin frowned and glanced at him, and said, "What's the good?" ”

"Good-looking......" Gao Gonggong muttered quietly, in fact, he hadn't figured it out yet, and he was used to it.

"Where's the pretty?" Li Mu wiped his hands, and also took the words and asked with a smile.

"Look at his round holes, like white lotus roots that overwhelm the mud."

"Your lotus root is black." Li Shimin glanced at him, but Li Mu still wanted to give Gao Gonggong a little face, and said: "It's indeed a bit similar, then in your words, call it 'coal lotus'." ”

Grandpa Gao smiled and said, "Thank you Lord Hou for breaking the siege." ”

Li Shimin approached the coal root and asked, "I want you to make this coal root, it should be used for burning?" ”

"Well, it's not for food." Li Mu smiled bitterly speechlessly, isn't this a nonsense?

Li Shimin also discovered his language problem, and said: "What I mean is that burning like this is definitely better than burning it loosely, but I can't guess what the benefit is." ”

"Then please continue to look at it carefully, and the ministers will solve your Majesty's doubts."

Li Mu continued to instruct the Jinyi guards to mix sawdust into the remaining bit of coal slurry, and then carry the prepared briquettes to the room and bake them on the stove.

In this way, the coal root will be able to do it quickly, otherwise it will really take several hours, and Li Shimin will definitely not have any patience.

About half an hour later, Li Mu checked the coal root and saw that the honeycomb coal had been roasted.

"Your Majesty, you can continue."

Li Shimin nodded and motioned for Li Mu to continue the demonstration.

"In the spirit of scientific experiments, the minister asked them to prepare three rooms and three charcoal basins."

Li Mu asked people to bring over the charcoal basin and explain to Li Shimin: "These three basins are filled with ordinary loose coal, coal lotus root made of ordinary loose coal, and high-quality Taiyuan coal. ”

"Hmm." At this time, not only Li Shimin, but everyone who could hear Li Mu's voice wanted to see what he was doing.

Human beings are naturally curious, how can they not be interested in new and unseen scientific experiments?

"Come, let's light them separately." Li Mu snapped his fingers.

Two brocade guards stood up and went to order the two pots of loose coal. It took them a long time to get to the point of the open flame.

And Li Mu only used the velvet to take the lamp, and set a piece of coal root on fire.

"Is it so easy?" Li Shimin was taken aback, in his impression, coal is very difficult, if you want to burn, coal must first use charcoal to ignite the fire.

Although he is an emperor who is not familiar with ordinary affairs, he still has this bit of common sense.

"Because this piece of coal root is mixed with sawdust." Li Mu smiled faintly and said, "The other two ordinary coal lotus roots are not so good. But this piece is on fire, and it will all burn. ”

"Wonderful." Li Shimin couldn't help but praise.

"Put the charcoal basins in each of the three rooms." The doors and windows were sealed, and Li Mu stood at the door of the three rooms, not knowing what he was waiting for.

After a while, they were all choked by billowing smoke. But this soot is terrible. As long as the coal stove is lit, the house will be filled with smoke for a while, and no one can stay at all.

I took people into the room where the Taiyuan coal was burned, and it was really much better, at least there was no smoke and dust.

"This Taiyuan coal is really good, I heard that many families use it to replace firewood." Li Shimin said down-to-earth: "But it's still a little choking, so rich people still burn charcoal." ”

"Uh-huh." Li Mushen nodded approvingly, this so-called 'Taiyuan coal', although there is no smoke when burning, it will choke people if you stay next to it for a long time.

Eventually, they entered the house where honeycomb coal was burned.

Everyone was surprised to find that this coal lotus made of ordinary coal had been burned for so long, and there was neither smoke nor choking......

"How can there be no smoke?"

"Why is there no smoke?!"

"And it's not choking!"

Looking at the stunned appearance of everyone, Li Muxin said that this formula of honeycomb coal is still being used on a large scale in rural areas after four hundred years.

"There is no coal ash yet...... Gao Gonggong wiped the wall, only to see that his fingers were as smooth as ever, and he couldn't help but exclaim.

"Really careful." Li Mu nodded approvingly, but Gao Gonggong didn't dare to say anything.

Everyone looked at Li Mu in unison, and asked him what was going on?

"Say it directly, I'm afraid the big guy won't remember." Li Mu put his hands behind his back and smiled: "Why don't you try to use scientific methods and study it yourself?" ”

"What is the scientific method?" Li Shimin humbly asked for advice, and the longer he contacted Li Mu, the more he felt that he knew very little......

"It is a method of conducting research under the guidance of the scientific spirit." Li Mu pointed to the pot of fire and said, "Please observe carefully." ”

"Use your imagination to find out." Li Mu followed the good path.

"It's about respecting the evidence. Imagination must be based on objective evidence, not speculation. ”

"It is dialectical thinking, thinking and evaluating the facts seen in the whole and in essence."

"It's not opinionated. We should take the initiative to accept empirical conclusions and actively adjust our cognitive ......"

"It is to be tolerant of failure, and to believe that the truth comes from continuous trial and error!"

After the tea effort.

Li Mu asked with a smile: "What has Your Majesty observed?" ”

"The color of this fire is different!" Li Shimin said in an uncertain tone: "It's blue!" And the fire that comes out of loose coal is red! ”

"That's the color of charcoal when it burns!" Father-in-law Gao hurriedly added, and then looked at Li Mu expectantly.

"Yes, very carefully." Li Mu nodded with a smile to show encouragement.

"The flames from this coal lotus root are small and soft, not as fierce as those two charcoal pots." Li Shimin added.

"What else?" Li Mu asked again.

"It's been burned for so long, and the shape hasn't changed." Gao Gonggong poked it with fire tongs, and a piece of red honeycomb coal said: "It's quite strong, no wonder there is no soot." ”

"Let your imagination run wild and guess why." Li Mu smiled and nodded, signaling to enter the next link.

Everyone couldn't guess, so Li Mu had no choice but to solve the mystery by himself, and said: "The secret of the blue flame is probably in those small chimney-like lotus eyes; The fire is mild, the shape has not changed, and the coal ash is small, which should be due to the yellow mud; As for why there is no taste, it is the reason for the slaked lime. ”

Li Shimin and Gao Gonggong stared at Li Mu's words, and their faces were full of question marks, exclamation marks, and ellipses.

"What is this?" Gao Gonggong said that he didn't understand a word.

"When the stove is burning, as long as you pull the bellows, the fire in the stove will burn brightly, and it will be the same blue ......" "It has been burning for so long, and the shape has not changed." Gao Gonggong poked it with fire tongs, and a piece of red honeycomb coal said: "It's quite strong, no wonder there is no soot." ”

"Let your imagination run wild and guess why." Li Mu smiled and nodded, signaling to enter the next link.

Everyone couldn't guess, so Li Mu had no choice but to solve the mystery by himself, and said: "The secret of the blue flame is probably in those small chimney-like lotus eyes; The fire is mild, the shape has not changed, and the coal ash is small, which should be due to the yellow mud; As for why there is no taste, it is the reason for the slaked lime. ”

Li Shimin and Gao Gonggong stared at Li Mu's words, and their faces were full of question marks, exclamation marks, and ellipses.

"What is this?" Gao Gonggong said that he didn't understand a word.

"When burning the stove, as long as you pull the bellows, the fire in the stove will burn brightly, and it will be the same blue ......" "When the stove is burned, as long as the bellows is pulled violently, the fire in the stove will burn vigorously, and it will be the same blue ......" "When the stove is burned, as long as the bellows is pulled violently, the fire in the stove will burn brightly, and it will be the same blue ......" "When the stove is burned, as long as the bellows is pulled violently, the fire in the stove will be hot, and it will be the same blue ......"

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