Li Yuanying spread his hands and said, "Goose hen~"

Li Shimin looked at Yu Shinan...... You always know, right?

Yu Shinan shook his head decisively, spread his hands, and said: "Your Majesty, I just came to the Tibetan Sword Hall for half an hour, and I didn't hear any white lights, I only heard the ruler diagram of the paving machine and the flat road machine, and I don't know what it is for?" ”

After thinking about it again, he said: "It seems that there are still some strange numbers, I can't understand them, and Yuan Gong has been busy again." ”

Li Shimin: "......"

Are you sure you have been away for hours, not months? Why do they know every word they say, but they don't understand it when they connect it?

Yuan Tiangang: "......"

Can't you fail to mention so-and-so? This paver and roller are still quite interesting, and I don't have time to explain what new numbers are! looked at Xiao Ruoyuan...... This guy is clearly in a state of crazy accounting, and obviously can't count on him. stood up and came to Li Shimin's side, and took the piece of paper from Xiao Ruoyuan's eucalyptus.

"Your Majesty, King Teng looked at Liu Erlang's newly drawn ruler diagram, and asked Xiao Shiyi Lang if he could think that the existing counting method was too cumbersome." Yuan Tiangang put the paper on the eucalyptus table in front of Li Shimin and sighed. This was written by the two of them, the first row was written by Xiao Shiyilang, the second row was written by King Teng, and the third row was the text version of the discussion between the two of them. The rest is the calculation method of the two of them, which has to be said to be much more concise, and the text in the third row can ensure that the results will not be tampered with, which helps to prevent fraud. ”

Picked up the teacup on the side, drank it all, talked too much, and was very thirsty. The text is a homophone: the sporadic zero of the community; A gentleman teaches a lesson, a condensation learns, and it is urgent. One, one without two hearts, two; The three armies are the ones who have changed; Wanton like God's wanton...... It can be seen that King Teng and Xiao Shiyi are both well-versed in the history of the scriptures.

"Your Majesty, when Xiao Shiyi Lang finishes calculating the roadbed outside the Mingde Gate, and then he and King Teng rewrite and improve one or two, it can be implemented in the six departments." Yuan Tiangang drank three cups of tea in a row before he spoke.

Li Shimin was originally shocked by the simplicity of the calculation method, but when he heard the Mingde Gate, he looked at Yuan Tiangang suspiciously, and asked: "I seem to be talking about Zhuque Street, when did it change to Mingde Gate?" ”

“！

！ Yuan Tiangang raised his head and patted his forehead, I'll go! I forgot that His Majesty hasn't agreed yet, it's all to blame on King Teng! There are so many novelties that a busy brain is not enough, and mistakes are starting to occur.

Yu Shinan: "......"

I've been here for so long, it's been almost half an hour, why don't you know anything? I feel like I've become an outsider in this Hidden Sword Hall...... Feng Xue Guogong's joy can't save the mood at this time!

"Brother, Xiao Shiyi and Liu Er have a new way of paving roads, which can not only solve the lighting problem, but also save lime." Li Yuanying explained with a lazy smile. "I'm not afraid that they will do a bad job, so I want to use the dirt road outside the Mingde Gate as an experiment. If it is done, and then change Suzaku Street, if it is not successful, it will not affect the image of Chang'an too much. ”

Even if you know that you will be able to do it, you can't say that it will work, first, I don't know if Liu Bu will drop the chain, and second, I can't explain that I have never seen it, how do you know that it can be done? You can't tell my brother directly that a certain one is from a thousand years later. If he asks when he hiccups, or when the Tang Dynasty burps, how do you answer? Resolutely don't dig a pit for yourself, a certain is Li Yuanying, the standard second generation of the emperor!

Besides, who says history can't be changed? How much truth can there be in the history books seen by later generations? In many cases, a person's life is recorded with just a few crosses. How can a person, even the most ordinary person, be able to describe his life in dozens of words?

Li Shimin: "......"

What is a new way of paving, and why does it become more and more unclear the more you hear it?

Li Yuanying: "......"

Without the physical object, it is a little difficult to explain...... He dragged a piece of paper, drew the shape of the white lamp, and drew the appearance of the mixture of asphalt and stones, paved on the road, handed it to Li Shimin, and said: "Liu Bu can refine fire oil from stone grease, and their sword faction uses fire oil for lighting, saying that the brightness is not bad." The remaining scum is paved with gravel, and it is said that it will neither be muddy nor too slippery on rainy days. ”

Li Shimin looked at the picture on the paper, uh-uh...... Even more confused, everyone knows that the stone grease is flammable, but the black smoke is okay for entering the mountains or marching at night. On the march, the transportation process is also prone to problems, and only nearby residents will use it to light fires.

"Fire oil should be more difficult to store than stone grease, how to ensure safety?"

"With the cooperation of Ban Qian and Liu Bu, this problem is not difficult to solve." Yuan Tiangang said calmly. There is also a Wei Sanyang in the Shushan Sword Sect, maybe he can find any strange minerals or plants, and if he can't solve it in one year, then three years, and if it really doesn't work, it will be five years. Sesame oil is also flammable, isn't it also used in Chang'an City?

"When will that paving machine and road machine be good?" Li Shimin frowned slightly, thinking that if he would go to Luoyang in ten years, if he came back within a month, then it would not be suitable to take his son, it would be too hard. Pheasant slave? Xiao Langjun has to run more, I'm afraid that how to do things for Datang after hard work!

"Five days." Ban Qian turned his head, and after saying these two words, he turned back and continued to be busy. The production of the steam engine, Luoyang is already very experienced, and the other parts are very simple, and the Shaofu craftsman can do it in three days. The fifth day was to wait for Liu Er to refine the stone grease, and at the same time, he also had to deal with the installation of the white light.

Li Shimin is very satisfied, Yuan Tiangang is very surprised, and Yu Shinan is looking forward to it...... What about Li Yuanying?

Li Yuanying is in a state of complete confusion, I believe that there are not only A and B sides in the world, but also S and Y sides, when you can't just let me see my S side and B side, ahhhh

！

！

Five days to make a paver and roller? Even if you can guarantee that the drawings are 100% fine, how can you be sure that the processing and installation aspects will be 100% fine? Even if the processing and installation can be guaranteed, then how can such a perfect price and installation be possible, and the construction period of five days can be achieved?

How can it be?

Believe it or not, you're going to get you all from the S side to the B side!

Even if you are elders, you can order some Taoism, spells, and occult arts, but this is a device for ordinary people, and you can't be the only one who can open it, right? Just a few of you, how much time will it take to achieve a smooth road in Datang?

I can't always incarnate as a fool of the Tang Dynasty, and I will build roads, although I die, I have a son; Sons beget grandchildren, and grandchildren beget sons; Sons have sons, and sons have grandchildren; Children and grandchildren are infinitely expensive?

"King Teng, are you okay?" Yuan Tiangang asked worriedly. Why do you feel that King Teng is about to cry? Is it necessary to be so impressed?

……