Du Che, who had just returned to the corridor, was dragged by Yuan Tiangang's collar and headed towards the Hidden Sword Hall. Before leaving, he did not forget to tell him: "Have a good rest, Prince Teng. We will see you at dinner."
Du Che: "..."
Why? How can you just drag someone away? At least give a reason first!
Li Yuanying waved his hand without saying goodbye. He pulled over the thin quilt covered by Chuntao Gang and rested in the sun for a while... The cashmere blanket was more comfortable. He would talk to Dou Shaofu when he had time. They were too busy now... Cashmere sweaters are also very comfortable and warm...
Chuntao was sitting on the bed next to her, holding an embroidery frame to embroider. With finer gold thread, she could embroider hairbands for the prince. When the little hairband was lying on its side, there was some trouble... The prince had been working too hard recently. Damn it. I spend more and more time sleeping on soft pillows.
Taking over Yunhe Mansion is really not an easy job.
The wind blows on the lotus leaves, and a skylark flies back and stays quietly under the eaves: Liu Er, Du Si and Xiao Shiyi have not wanted to sleep these days. No wonder Master and the others call Mr. Yuan crazy...it's terrible to be crazy!
The three people who were sympathized with by Skylark sat quietly beside the big eucalyptus, calculating the structure and manufacturing technology of the new small lightning...
Half an hour later, Liu Bu glanced at Du Che secretly, handed the calculated drawings and manufacturing process to Yuan Tiangang, crossed his hands and saluted, and said: "Mr. Yuan, Shiyi and I need to rush back to build roads, and there is Sanmenxia. ……You know."
Yuan Tiangang saw the drawings and manufacturing techniques they had completed, pointed at one place, and asked in confusion: "What does Yang Qi mean?"
It shouldn't refer to human breath or things that can provide heat sources, such as sunlight or firelight... Their method of defining things is different from normal people.
Liu Bu explained the difference between Yang Qi and Yin Qi (Chapter 123, 124), and said: "Carbonized bamboo silk should burn more slowly in Yang Qi and continue to provide brightness for a longer time, but the current brightness is still It is very low, far inferior to the white light. Also, the brightness it provides will gradually weaken, and it is not as stable as the white light. The only advantage is that it lasts longer than the white light, and it can also be made smaller and easier to carry."
But the portability aspect is useless. There are not many people on the road at night, and it cannot drive away wild beasts like fire. Instead, it is more likely to attract wild beasts to attack, or at least mosquitoes and other flying insects. There are really not many occasions to use it.
The experimental significance far exceeds the practical significance. In short, it is useless.
Yuan Tiangang scratched his temples with his fingers and said slowly: "Have you ever thought about using it with flint to ignite kerosene steam engines?"
The methods previously thought of are somewhat difficult to achieve for ordinary people. This is also the reason why we only have ruler and scale drawings and no prototypes.
After listening to Yuan Tiangang's words, Du Che immediately pulled out the blank paper to calculate. A quarter of an hour later... "Mr. Yuan, the current lightning cannot ignite the flint. It requires at least ten pieces of the same... It will affect safety, and there is no It cannot be reused, and it is still troublesome to replace it every time..."
Picking up the charcoal pen and calculating again, after a cup of tea... "Perhaps we can use a magnet disk to solve this problem, but there is a new problem. Who provides... power for the rotation of the magnet disk, and controls the direction of the magnet at the same time. It is still very difficult for ordinary people to do it. If two people are needed, the advantage over a horse-drawn carriage will be much less."
Liu Bu and Xiao Ruoyuan looked at the sky speechlessly: the magnet disk needed a steam engine to drive it, and things fell into a vicious cycle again.
Yuan Tiangang: "..."
At this moment, you will realize the importance of Prince Teng... He should have fallen asleep now. Forcibly waking him up would not be good for his health, but... By the time of dinner, there is still more than an hour, and the day is like three autumns. torment.
The Hidden Sword Hall fell into silence, a very strange silence... Xia Gua looked over and said, uh uh uh, the four princes were sitting there silently, something... was not normal, and asked in a low voice: "Mr. Yuan, do you need anything?" Could you please make another pot of tea?"
The tea Bailu fried this time comes from Dongting Lake. The pekoe is exposed and the color is silvery green, which is more emerald green than Mengding. The most important thing is that the curls are like a conch, which is a leisurely cold fragrance, while the top is the warm fragrance of spring vegetation.
"That's fine." Yuan Tiangang no longer struggled with whether to wake up Li Yuanying. Maybe after a cup of tea, his mind would be clearer and he could think of a way to break the situation.
Xia Gua answered Wei softly, took out the small wooden box with a picture of Dongting Lake, took the tea, warmed the pot, poured it into the pot, washed the tea... poured it into fair cups, divided the tea, and placed it in front of the four gentlemen.
"The aroma of this tea is not as rich as Mengding." Du Che picked up the tea cup, smelled the aroma and commented. His whole temperament was different, like a hermit in the mountains.
Xiao Ruoyuan took a sip lightly and said: "I have a dull taste of flowers and fruits, which is not as good as the fragrance of chestnuts covering my head."
This person is more like a picky Immortal who dislikes the little Immortal for not working hard enough. If it weren't for her handsome face, she would have deserved a good beating.
Liu Bu drank it all in one gulp and said, "Have another drink."
Drinking tea to quench their thirst, Lao Si and Xiao Eleven are hypocritical. However, this kind of pretentiousness belongs to the fact that the upper beam is not straight and the lower beam is crooked. How can the master be any better if he is a hypocritical disciple? Not everyone is like a certain person who changes his behavior when he sees something bad.
Yuan Tiangang drank the tea slowly, watching Xia Gua pour tea for Liu Erlang again... put down the tea cup, looked at Du Che very excitedly, and said: "If lightning can be like tea, and you can refill it after use, wouldn't it be possible?" Have you solved the problem of short duration?"
Du Che: "..."
The tea cup in his hand fell to the ground and spun around, but it didn't break... The lightning continued, how to continue it? This thing cannot be like tea, just pour water directly.
"Fill the little lightning with a magnet plate?" Liu Bu looked at the tea in the cup and said thoughtfully.
Xiao Shiyi turned to the tea cup and turned around to get the ruler and map... Ever since he knocked over the tea cup and wet a large piece of ruler and map during a discussion, when drinking tea, he would come to a separate tea eucalyptus. Pointing to the internal structure of the ruler and compass diagram, he explained: "Everyone, please don't forget that whether it is the original vinegar or the current lake, the substances that can provide changes in them will gradually decrease. How to solve this problem?"
"Maybe there is some kind of substance that can do this, but we haven't found it yet." Du Che said slowly, touching his chin. "I just found this kind of material, maybe tomorrow, maybe a hundred years later. The third senior brother is currently very interested in building roads, and he probably won't spare the time to look for ore."
The things that the third senior brother is interested in will not decrease in two or three years. Anyway, he can find herbs or stones that he is interested in along the way.
"Wait a minute!" Du Che's eyes lit up when he thought of the stones, "Maybe we can study the stones kicked out by the third senior brother and we might make some unexpected discoveries."
Liu Bu and Xiao Ruoyuan looked at each other and shouted in unison: "If you want to study it, do it yourself, don't count someone!"
Yuan Tiangang thought of those rocky mountains in Wei Gui's yard...
…
