Mu Xinya knew that the red clothes were a little nervous in front of the living people, and they still needed to exercise, so she smiled indifferently, took out a white stone the size of a fingernail from under the lampshade and said: "The reason why it can shine is because of this, this thing I got from a dying merchant who was robbed by pirates in the East China Sea by chance, I don't know what it is called, I only know that this thing can be used for lighting, and it doesn't use lamp oil, as long as it is put into the water, it will glow." ”

Stone, and stone, the previous fog stone became the power of the airship, and the later gas stone became an important energy source for welding, and now there is such a magical stone, I don't know what kind of surprise it is, Yuan Fang is full of expectations.

Took the small white stone, looked at it carefully, the stone is tight, the hand is a little heavier, the surface is smooth and there is no stone powder falling off, it looks like a river pebble, Yuan Fang threw it into the teacup, the stone did not enter the tea, something magical happened, just now I looked at the very ordinary stone actually emitted a faint light, and then became brighter and brighter, reflecting a soft yellow light through the dim yellow tea.

Yuan Fang stretched out his hand and took out the teacup and put it in the palm of his hand, and after a while, the tea on the stone fell, and the light gradually converged and finally disappeared, turning into the same stone as just now.

Then, Yuan Fang tried it a few times with other things, and sure enough, as Mu Xinya said, this kind of magic time will glow once it is put into the water, and it is brighter than the fire of an oil lamp, I don't know how much, just a small piece as big as a fingernail, and the light emitted is no less than a fluorescent lamp.

Yuan Fang was very excited, lighting, has always been a problem he is difficult to solve, in this world, the main lighting tool is the oil lamp, and the torch is used in the open place, but whether it is an oil lamp or a torch, even if the best oil is used, it will still produce pungent smoke, and the light source is extremely unstable, and the brightness is not enough, usually it is okay, but if the gas after the combustion of these fire oil during the operation will produce dust that is difficult to distinguish with the naked eye, it is likely to cause infection to the patient's injury, and the light of the oil lamp is dim during the operation, It affects the doctor's treatment of the patient.

If you have this kind of stone that looks very environmentally friendly and has enough shiny, the lighting problem is solved.

Thinking of this, Yuan Fang couldn't wait to ask: "Godmother, where did you find this kind of stone?" Is there anything else? ”

Hongyi showed off and said: "This thing is not natural, I can't find it anywhere, this is what my mother fired by herself some time ago, if you want it, I still have two pieces there to give you." ”

Yuan Fang nodded and smiled: "Then thank you Sister in Red first, what do you like, I will give you something, it's okay to come and not be rude." The red clothes turned their heads, not appreciative at all.

Yu Jingqiu, who had been silent, asked suspiciously: "Queen Mother, since there is such a good thing, why do other people still use oil lamps?" "Just now, during the discussion in the council chamber, the oil lamps that were still used there were still lighting.

Mu Xinya didn't have a shelf at all, and explained with a faint smile: "I have only recently fired this kind of stone, only a little bit, so I will use it myself." ”

Yuan Fang didn't care about this, and asked, "Godmother, so you have a formula?" Then why didn't you refine a little more of this stone? ”

Mu Xinya smiled bitterly and said: "It's not that I don't want to, but there are no materials, the other ingredients on the formula are easy to say, and it is not difficult to find, there is only one that we don't have at all." ”

Yuan Fang asked, "What material?" ”

Hongyi hurriedly said: "It's the shell of the colorful shell, the colorful shell is only available on the side of the Liusang, we have searched all over the other sea areas and haven't found it, the shells used this time are still from Cai Ning, I heard that it was a gift from the Liusang people." ”

Yuan Fang frowned: "Gift, so the shells of the colorful shells are also very precious in the Liusang?" ”

Hongyi pursed his lips and said with a disdainful face: "It's not, I was also present at the time, the guy called Kojiro gave Cai Ning the whole colorful shellfish, oops, how to say it, it was given to Cai Ning as a specialty, Cai Ning was still a treasure at the time, and he was reluctant to eat it, and then I heard other Japanese people muttering quietly, saying that Kojiro was too stingy, and actually gave away something that no one wanted, I think this thing should be very common in Liusang." ”

Yuan Fang pondered for a while, and suddenly said, "Oh, I understand, the so-called gift is not the shell of the colorful shell, but the meat inside." ”

Red-clothed nodded vigorously: "That's right, that's what I meant." ”

Yuan Fang looked at Mu Xinya: "Godmother, how many of these stones can be refined by a multicolored shell?" Does the stone have a lifespan or does it always glow? ”

Mu Xinya smiled and said: "How can it be luminous all the time, wouldn't it be a night pearl in that case, I have tried, if such a large piece is used, it can be used for about thirty days if it is only used for lighting at night, and it will melt away if it is longer." The multicolored shells are very small, about the size of a teacup, and a pair of shells can probably make more than 30 pieces. ”

Mu Xinya blushed a little and said: "It's the first time I've fired it, and I failed the first few times, wasting a lot of materials, and finally succeeded twice, and I got seven or eight pieces of this size." ”

Yuan Fang nodded and then asked, "Then is this brightness the only way to do it?" Wouldn't it be brighter to put a few more pieces? ”

The red coat pouted and said, "This is already very bright, much stronger than an oil lamp, why do you make it so bright?" What a dazzling eye-catcher. ”

Yuan Fang grinned: "In other words, it will be brighter if you put it more?" Redcoat nodded in the affirmative.

Yuan Fang was overjoyed, rubbing his hands a little embarrassed, not knowing how to speak.

Mu Xinya smiled dumbly: "What, are you interested in this?" ”

Yuan Fang nodded vigorously: "Well, interested, very interested." With this thing, I will no longer need oil lamps, and I am worried about the safety of the airship flying at night, if I have this thing, I can get a warning light or something, and also make a lighthouse on the island to guide the way, so that I don't have to worry about getting lost when flying or sailing at night. ”

Yuan Fangna said more and more excited: "There is also the civilian aspect, if the cost is not high, it can also be used to make street lights, otherwise after dark at night, there are a few spirit lamps on the street like lanterns, dim not to mention, look scary, if you can use this stone every other distance to make a street lamp, the streets and alleys are bright, what a beautiful thing, by the way, there is also a city defense, can be developed into a searchlight, so that the soldiers guarding the city at night do not have to risk going out of the city to light the fire, directly with searchlights, It's much stronger than a campfire, and it's safer and more convenient. ”