Du Che, who had just returned to the corridor, was dragged by Yuan Tiangang by the collar and walked towards the Tibetan Sword Hall, and before leaving, he did not forget to advise: "King Teng is resting, we will see you at dinner." ”

Du Che: "......"

Why? How can you just drag people away, so give a reason first!

Li Yuanying waved his hand, didn't say goodbye, pulled the thin quilt covered by the Spring Peach Gang, rested in the sun, and rested for a while...... It's still a cashmere blanket comfortable, and I'll tell Dou Shaofu when I have time, they're too busy now...... The cashmere sweater is also very comfortable and warm......

Chun Tao sat on the Hu bed on the side, holding an embroidered bandage to embroider, with a finer gold wire, you can embroider the hair to bring the prince to use, when the small hair crown is lying on the side, there is some trouble...... The prince has been working too hard lately, and he spends more and more time leaning on soft pillows.

Taking over Yunhe Mansion is really not a good errand.

The wind blew the lotus leaves, and a lark flew back and stayed quietly under the eaves: Liu Er, Du Si and Xiao Shiyi, all of whom wanted to sleep these days. No wonder Master, they called Yuan Gong crazy...... It's scary to go crazy!

The three individuals who were sympathized with by the lark sat honestly on the side of the big eucalyptus, accounting for the structure and manufacturing skills of the new type of small lightning......

Half an hour later, Liu Bu secretly glared at Du Che, handed the calculated drawings and manufacturing process to Yuan Tiangang, and said with a crossed hand: "Yuan Gong, Eleven and I need to rush back to repair the road, and there is Sanmenxia...... You know. ”

Yuan Tiangang saw the drawings and manufacturing techniques they had calculated, pointed to one place, and asked suspiciously, "What does yang energy mean?" ”

It doesn't mean human breath or sunlight or fire that can provide a source of heat...... They prescribe things in a way that is not very different from normal people.

Liu Bu explained the difference between Yang and Yin (Chapters 123 and 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 very low, far inferior to white lights. Also, the brightness it provides will gradually diminish and it will not be as stable as a white light. The only advantage is that the time is longer than that of a white light, and it can also be made smaller, which is easy to carry. ”

But it is easy to carry this, and it is very frustrating. There are not many people who rush at night, and it can't drive away wild beasts like fire, but it is more likely to attract wild beasts to attack, at least mosquitoes and other flying insects, and there are really not many occasions to use it.

The significance of the experiment is much more than the practical significance, in short, the eggs are useless.

Yuan Tiangang scratched his sideburns with his fingers and said slowly: "Have you ever thought that it can be used in conjunction with flint for the ignition of the oil steam engine?" ”

The methods I thought of before were a little difficult to achieve for ordinary people. This is also the reason why there has always been only a ruler diagram and no prototype.

After listening to Yuan Tiangang's words, Du Che immediately dragged over the blank paper to calculate, and after a quarter of an hour, he ......, "Yuan Gong, the lightning generated at present cannot ignite the flint, and at least ten pieces of the same ...... are needed It will affect safety, and it can't be reused, so it's still cumbersome to replace every time......"

Pick up the charcoal pen and calculate again, and after a cup of tea, ...... "Maybe you can use a magnet disk to solve this problem, but there is a new problem, who provides the ...... for the rotation of the magnet disk." Power, control the direction and control the magnet disk at the same time, for ordinary people, it is still difficult. If two people are needed, the advantage over a carriage is much less. ”

Liu Bu and Xiao Ruoyuan looked at the sky speechlessly: the magnet disk needs to be driven by a steam engine, and things are once again falling into a strange circle of cycles.

Yuan Tiangang: "......"

At this moment, you will find the importance of King Teng...... He should have fallen asleep by now, forcibly waking up, it's not good for his health, but ...... When it was dinner time, there was still more than an hour, and it was really like three autumns, and it was tormenting.

The Hidden Sword Hall fell silent, very eerily silent...... Xia Gua poked his head over and looked, uh, uh, the four Lang Jun sat there and didn't speak, a little ...... It was not normal, and he asked in a low voice: "Yuan Gong, do you need the slave to make a pot of tea again?" ”

The tea fried by Bailu this time comes from Dongting Lake, and the white hao is revealed, and the color is silver-green, which is more emerald green than Mengding. The most important point is that it curls like a conch, which is a leisurely cold fragrance, and the top is the warm fragrance of spring plants and trees.

"It's fine." Yuan Tiangang is no longer entangled in whether to wake up Li Yuanying, maybe with a cup of tea, his brain will be clearer and he can come up with a way to break the game.

Xia Gua responded softly, took out a small wooden box with a picture of Dongting Lake, and took tea, warmed the pot, threw the pot, and washed the tea...... Pour it into a fair cup, divide the tea, and then put it in front of the four Lang Jun.

"The aroma of this tea is not as strong as Mengding." Du Che picked up the teacup and smelled the fragrance and tasted it. The temperament of the whole person is different, like a hermit in the mountains.

Xiao Ruoyuan took a sip and said: "There is a kind of surging flowers and fruits, it is better to cover the chestnut fragrance with the mouth." ”

This is more like a picky immortal, and he dislikes that Xiao Xianji is not careful enough to do things, if it weren't for the fact that her face is handsome enough, she would owe a good beating.

Liu Bu drank it all directly and said, "Another drink." ”

Drinking tea to quench thirst, the fourth and eleventh are hypocritical. However, this hypocrisy belongs to the upper beam is not correct and the lower beam is crooked, how good can the master's hypocritical apprentice be? Not everyone is like this, and they change when they see that they are not virtuous.

Yuan Tiangang drank the tea slowly, watching Xia Gua pour tea for Liu Erlang again...... Putting down the teacup, he looked at Du Che very excitedly, and said, "If lightning can be like tea, and then renew it after it is used up, wouldn't it be able to solve the problem of short duration?" ”

Du Che: "......"

The teacup in his hand fell to the ground, and the bones spun around without shattering...... How to continue with lightning? This thing can't be like tea, just pour water.

"Fill a magnet disk with a small lightning bolt?" Liu Bu looked at the tea in the cup and said thoughtfully.

Xiao Shiyi turned to the teacup and turned around to get the ruler and gauge...... Ever since a discussion knocked over the teacup and wet a large piece of ruler drawing, drinking tea will come to a separate tea eucalyptus. Pointing to the internal structure of the ruler diagram, he explained: "Ladies and gentlemen, please don't forget that whether it is vinegar or the current lake, the amount of material that can provide change in them will gradually decrease, how can I solve this problem?" ”

"Maybe there's some kind of substance that can do that, it's just that we haven't discovered it yet." Du Che touched his chin and said very slowly. "Just find this substance, maybe tomorrow, maybe a hundred years from now. The third senior brother is currently very interested in building roads, and it is estimated that he will not find time to find ore. ”

The things that the third senior brother is interested in, without two or three years, his interest will not decrease, anyway, he can also find herbs or stones that he is interested in along the road.

"Wait!" Thinking of the stones, Du Che's eyes lit up, "Maybe we can take those stones that the third senior brother kicked out, and study them well, maybe there will be unexpected discoveries." ”

Liu Bu and Xiao Ruoyuan glanced at each other and shouted in unison: "If you want to study yourself, don't count so-and-so!" ”

Yuan Tiangang thought of the stone mountains in Wei Jue's yard......

……