Along the way, Yun Yue saw many strange things, such as a haha mirror that illuminated people out of shape. In fact, it is the principle of convex lens and concave lens, and Pingliang has been able to produce transparent glass. However, due to process problems, pure crystal glass cannot be produced. Master Geng is constantly experimenting to create transparent glass without bubbles. In this way, Pingliang was able to produce optical equipment such as telescopes on his own. Among other things, the telescope alone is urgently needed in the army now.

It often takes a lot of kilns to fire the lenses needed for a pair of telescopes. This also directly led to the fact that the level of telescope equipment of General Pingliang was very low. Yun Yue's idea of getting a pair of binoculars for every scout doesn't know what year or month it will take to come true.

Seeing Yun Yue looking at these mirrors in a daze, Zou Yan hurriedly explained, "The academy is helping Master Geng improve the formula of glass so that it can produce purer glass. There has been some progress, and the most recent research has been on adding lead to glass. However, the proportion has not yet been mastered, once the ratio is mastered. Pingliang will produce purer glass, and the generals will no longer use the gray telescope. ”

Yun Yue suddenly remembered that it seemed that there was a process of adding lead to glass in later generations. Unexpectedly, I didn't think that I actually asked the ancients of the Warring States Period to explore on their own, and what is even more surprising is that these guys still succeeded in groping. It seems that the creativity of working people is endless, as long as you open a door for them. Soon, they will widen the crack enough to run a wagon.

The house is far from the pigsty, but understandable. No one likes to eat next to a pigsty, passing by a glass house. Yun Yue was taken aback as he looked through the mirror inside. I found that there were not only vegetables growing in the glass house. There are bags of fresh mushrooms, and even strings of black and fat fungus on the wood.

This surprise is not trivial, and he does not know when humans began to know about the cultivation of fungi. However, it is certain that it is not in the Warring States period, and the spores of any kind of fungus will be more or less alive. Some of these things are good for the human body, and some are harmful to the human body. This is also the reason why some mushrooms can save people, while others can poison people.

Any kind of fungus plant must go through many years of detoxification before it can finally be eaten with confidence. Unexpectedly, these students were so bold that they dared to grow fresh mushrooms and fungus. If this thing is eaten badly, it will kill people.

"Whoever tinkered with this thing, if this thing is not good, it will be poisonous, and it will kill people." Yun Yue pointed to the fresh mushrooms and fungus, and said with some horror.

"Master Hou rest assured, these mushrooms are non-toxic. The mushrooms grown must be fed to the pigs first, and the pigs will be used to cook when they have nothing to eat. At first, the pig did get sick after eating it, but after a long time, it seemed that the pig was nothing. ”

Yun Yue had to admire these stupid boldness, and she actually knew how to do animal experiments.

"Master Hou! In front of them is the room, and now they are cooking with that gas. Zou Yan pointed to a row of houses in front of him and said.

The kitchen in the back kitchen of the big cafeteria will not be clean anywhere Yun Yue was in college in her last life. There are also helpers who eat vegetables with their hands in the pot, and Yun Yue is already mentally prepared for the hygiene of this kind of canteen kitchen. However, the room of the academy surprised Yun Yue.

The noodles of the room are covered with white iron sheets, and the floor is covered with square floor tiles. Although this was the busiest time, there was not much standing water on the ground. If you look closely, this house actually has a gutter. Due to the relatively high terrain of the house, the water in the gutter flowed into a large pit outside. I have to say that Yun Yue's two lives are the most hygienic room he has ever seen. It is even more hygienic than the big house in the Hou Mansion where the people cook.

Yun Yue came to the side of the Warring States version of the gas stove, and was so frightened that the roots of her hair stood on end, and she immediately had an urge to escape. Their connecting pipe is actually made of bamboo, although the joints are smeared with fish glue, but how reliable is bamboo, God, aren't you afraid of air leakage? There's a methane leak and the explosion is only a matter of minutes.

"That's how you use biogas?" Yun Yue rushed out of the room, and said tremblingly.

"Yes! Master Hou! What's wrong? Zou Yan looked at this overly frightened Hou Ye with a puzzled expression, and he didn't know what scared the Yun Hou Ye, who was accustomed to seeing the corpse mountain and blood river, into such a virtuous demeanor.

"It's going to blow up ......!" Yun Yue said angrily, taking a few steps back as she spoke. It's as if the biogas is about to explode.

"Oh ......! Hahaha, Hou Ye is too worried. We have experimented with the amount of gas, and as long as the pit is put into the pig manure is a little smaller each time, the amount of gas can be controlled. Zou Yan said and took Yun Yue to the back of the room.

Yun Yue saw rows of one-meter-square pits, all filled with pig dung. It is also covered with a straw curtain, presumably to allow the pig manure to fully ferment!

"Master Hou, you see, we only use the qi in one pit every time. There is a valve there that controls exactly which pit can supply gas. In this way, even if an explosion occurs, the power is limited and does not hurt anyone. "It turned out that they were smart and actually thought of using a reduction in gas storage capacity to control the risk, which is really fucking high.

"And these bamboo tubes are actually smeared with fish gelatin, and there will be absolutely no air leakage. It did explode a few times in the early days of development, and it has become what it is now. Zou Yan said with some pride.

"Hmmm! This method is good and counts as waste utilization. Yun Yue has to admit that this method effectively controls the risk. Even if there is an accident, it will not have much impact.

"These iron sheets were exchanged with Master Geng with the recipe of this thing!" Zou Yan pointed to the iron sheet on the roof and the white iron road on the operating table in the room.

"The purpose of installing iron sheets in the room is to be clean, but what is the purpose of installing iron sheets on the roof?" Yun Yue was a little puzzled.

"Master Hou, sometimes the snow will be very heavy in the cool winter. The snow on the roof sometimes crushes the house. With this kind of tin roof, the snow accumulates a certain amount of weight and automatically slides down. It neither hurts people nor crushes the house. Zou Yan is quite proud, it seems that this is his handiwork.

Yun Yue secretly hated that he was a bit of an idiot who asked, and in the later generations he went to the Baishan and Heishui Heilongjiang River basins. It is not uncommon to see these tin houses, which collapse in order to prevent the roof from storing a large amount of snow. I obviously saw it in my previous life, but I want the ancients of the Warring States Period to remind me.

Just when Yun Yue was annoyed, she suddenly heard a voice. "Master Hou! So you're here, come and see what the old man has come up with. (To be continued.) )