Not to mention that Song Yingxing is thinking about engineering cybernetics in his mind, Zhu Youxiao is still pulling him around in the affiliated factory, and he can solve two problems, Zhu Youxiao is very happy, is there still a problem waiting for him to be solved? Zhu Youxiao, who is in a good mood, hasn't played enough yet, and needs to wander around for a while.

Now it has entered the late autumn season, the construction of the school is still good, there are small gardens everywhere, countless well-known and unknown flowers and plants, the school is not a taste, the yellow leaves begin to fall, the red maple leaves are still strong hanging on the branches, the students who come and go are full of happiness, even the workers who do health services in the school are full of pride, and sincerely enjoy a comfortable life.

Passing by the small courtyard where a worker lived, I saw an old man making coal blocks, and a pile of pulverized coal was being made into briquettes by the old man with small holes in the wooden lattice. I don't know if the child who is struggling on the ground is his youngest son or the eldest grandson, who is using a small wooden stick to investigate and empty the briquettes one by one, and is doing a very good job.

Zhu Youxiao saw that this briquette was an idea, walked in the door, and asked the old man, "Old man, what are you doing with these briquettes?" Is it easy to burn like this? ”

The old man said with a smile: "Those big coal blocks are ready to burn the stove in winter, these coal surfaces used for coking and washing down are not very useful, and they are not very easy to burn, no one wants these things, last year the eldest son pulled back a car from the coal washing plant, I was thinking about how to get them into a large block, but these coal surfaces do not absorb water, this is not this little son mixed some cement into it when he played, but it stuck together, I expanded these coal surfaces into coal blocks, this little son was naughty, and pierced many holes with wooden sticks on it, When you warm up in winter, you can put these small holes on the ground, and it will be easy to burn. ”

Zhu Youxiao said: "Old man, are the living conditions of your family not good? Why not buy some big lumps? ”

The old man said: "Life is not bad now, but my eldest son was injured on the battlefield, so I don't arrange to do some odd jobs here, and I don't have to worry about eating and drinking, but my wife's health is not very good, and my younger son is still young, so I still want to save more money and go back to marry my youngest son's daughter-in-law?" You can't waste anything now, and if you save a little more, you will make more money. ”

Zhu Youxiao thought about it, and said to the old man: "Old man, your son was injured for the country, and it seems that the court still doesn't take care of it well enough, so let's make a tool for your old man, help your old man expand these coal surfaces into briquettes, and you let your son register a patent, or make this tool, or hire someone to expand briquettes and sell them, this is a good livelihood, and I will design you a special stove for burning this kind of briquettes, if you add some iron pipes, then you can get warm." ”

In fact, in the eighties of the twentieth century, it was a very popular way to heat in winter, but no one has used it now, and now Zhu Youxiao is just using it to fund this retired wounded soldier.

Let the old man's youngest son find the retired wounded soldier back, Zhu Youxiao personally drew a simple briquette tool with a pen, and then drew a diagram of a honeycomb coal stove, and then handed him the method of how to use this stove, and asked him to go to the patent office to register the mold of briquettes, so that he could live easily.

Song Yingxing felt that Zhu Youxiao, the carpenter emperor, was very strange today, and every time he encountered a trouble, he could come up with a simple solution, and this method could even form an industry, so he couldn't help but admire Zhu Youxiao a little. It seems that the current emperor is not only the reincarnation of Taizu, but also the immortal.

Unconsciously, Song Yingxing thought of the extremely bitter cold place in the north, if these heating methods could be used there, then there should be more people living there, and the living conditions would be more convenient.

So, Song Yingxing said to Zhu Youxiao: "Your Majesty, can the idea you just gave the old man be used in the area of Liaodong, there are many coal mines in Siping and Fushun in Liaodong, and where you also built a small iron factory, if you can promote the manufacture of this kind of coal stove in this way, the people there will be much better in winter." ”

Zhu Youxiao said: "I am preparing this method for the people of Northeast China, just painted the simplest and most primitive coal mold, back you let the factory design a machine that can produce briquettes in large quantities, can be driven by a steam engine briquette machine, and then vigorously promote it in Liaodong, but also produce some pipes, used to make heating pipes, if you want to make the Northeast region vigorously develop, you have to make the living conditions there better, otherwise there will be population loss." ”

Zhu Youxiao and Song Yingxing walked around the college for a long time, the sky had slowly reached the evening, the two casually ate some meals in the school cafeteria, and were ready to see the night scene of the school, and then went back to rest, when passing by the classroom, I saw that there were still many students reading at night, but they still used small soybean oil lamps, and the light was a little dim, which made Zhu Youxiao can't help but miss the electric lights in his previous life.

"Old Song," Zhu Youxiao asked Song Yingxing casually: "Have you ever seen the fierce fire oil in Yanzhou?" That's good stuff! ”

Song Yingxing replied: "I've seen that fierce fire oil can also be used as oil for lighting lamps, but the smoke of that thing is too big, not many people use it, and it needs to be refined before it can be used." In the pre-Song Dynasty, Mr. Shen Kuo once talked about this thing in "Mengxi Writings", and named it according to the fact that this oil was born in the sand and gravel of the water and mixed with the spring water, and it was also called oil. I haven't studied how to refine this kind of thing yet. However, there are also candles made from petroleum sold on the streets, and they should know how to make them. ”

It seems that Song Yingxing doesn't know much about oil, and Zhu Youxiao doesn't want to ask too much, so the two of them slowly walked back in the direction of the palace. It was getting dark, and most of the shops on the side of the road were closing for a break, and only a few were still open.

Zhu Youxiao and Song Yingxing walked on the way back, still chatting and talking about some interesting things recorded in "Tiangong Kaiwu", and planned to let Song Yingxing take a group of students to compile a set of encyclopedias about this kind of natural common sense as in history, and use it as an interesting toy to enlighten the minds of children and teenagers, develop the inventive wisdom of teenagers to learn, and cultivate a large number of open-minded talents.

When passing by a shop with lights on, Zhu Youxiao inadvertently smelled a familiar smell, what smell? The smell of gasoline. So Zhu Youxiao pulled Song Yingxing into the store, only to see that the store was lit with a candle that was different from other stores, this candle was lit not only with a lot of smoke, but also emitted a strong smell of gasoline, but it was brighter than other candles.

Song Yingxing opened his mouth and whispered: "Your Majesty, what this shop sells is candles made from petroleum refining, and it sells cheaper than other candles, because many people will have a strong discomfort when they smell the smell of this candle, so the sales volume is not too large." ”

Zhu Youxiao looked at the small shop, and didn't know if the candle was made by themselves or shipped from elsewhere.

When the shopkeeper saw someone coming in, he greeted him warmly: "Hello two guest officers, what do you want to see?" If you want it, you can say live, and I will give it to the two of you, do you have anything you want? ”

Zhu Youxiao asked, "Shopkeeper, did you make this candle yourself or did you buy it from elsewhere?" I'm interested in this and want to buy more, do you have a lot of candles like this? ”

As soon as the shopkeeper heard this, he felt that he was a customer, so he hurriedly replied: "Guest officer, this candle is not made by me, it is wholesaled from Yanzhou, there are a lot of these things, but this thing is not easy to sell in this capital, I have some here, if you want more, I can transfer some in other stores." ”