"Your Majesty, let the minister take you to visit the minister's biogas facility." Since he is here for this, let's take a visit, even if Li Er doesn't come, Yang Heng will also invite him to visit, after all, this thing needs to be promoted.

The biogas equipment starts from the west side room of the second entrance, and the first thing that appears in front of everyone is a biogas lamp on the corridor, because this is the corridor and needs to illuminate a far place, so this lamp head is five torches on it, so it looks brighter, like lighting five candles.

"It's a biogas lamp, and it's not very bright, but why are you lighting it during the day?" Li Er raised the first question, "Your Majesty, the amount of gas produced by this biogas is very large, and there needs to be a place to ignite it every day, and the minister just put the place that needs to be ignited here, and there is mainly a general duty room for the biogas equipment care personnel in this place, and there are several places where the people who are responsible for the biogas cleaning and other work go to live." ”

For the sake of safety, Yang Heng has set up such a place, and he does not raise a few more people, but in this way, in order to ensure the safe use of biogas, and there will be no trouble, let's just say that the lamp, the personnel on duty only need to observe the length of the flame regularly every day, and they can know the pressure in the biogas digester, if the flame is too high, you need to decompress, you need to light a few more lights, if the flame is too low, you need to extinguish a few lights in an appropriate amount.

There is also a hot water room next to this duty room, which has hot water supply from morning to night every day, which can supply many people with drinking water and can also supply people with bathing. Yang Heng asked the blacksmith to create a lot of thin iron pots. This tin kettle can not only boil water. You can also carry water, so that the transportation is much more convenient, the next person in each room only needs to carry the pot to carry the water, and the outside of the pot is also wrapped with some insulation materials, so that the hot water can also be guaranteed to have a certain heat preservation time.

"Duty room, take me in and have a look." Li Er didn't take a step as he spoke, meaning naturally to let the guards go in first to check it. Then Yang Heng led the way in front and entered this so-called duty room, "Your Majesty, Your Majesty." A few of the men knelt there trembling, which frightened a few of the guards, "Get up, I have something to ask you." "Yes, Your Majesty." The subordinates stood up tremblingly, it was really a shame for Yang Heng, isn't it Li Er. He can't eat you, he just wants to eat you. It won't be your turn anytime soon. Yang Heng thought hatefully, and naturally he also knew that this was all the result of the guards being frightened.

"What's on your wall?" "Back to Your Majesty, this is the duty code, and there are regulations for the maintenance and use of biogas." Yang Heng interjected, obviously, these subordinates couldn't speak, at this time they were not only afraid, but also excited, they met with the first person in the world, and they talked to the first person in the world, happy, so the trembling of fear turned into trembling with excitement, if Yang Heng knew what they thought in their hearts, everyone who would kick them in the atmosphere would kick them, you would be out of this way, I can't grow a piece of meat when I see you, and I can't grow a piece of meat if I don't see you, by the way, it may become thinner, I will be scared, and I will be excited, This sweat flows a lot, and it can also thin people.

"Tell me, can you understand all of this?" "Yes, these Xiao Langjun have taught us, and we have all memorized them, Xiao Langjun, or the Lotus Steward will occasionally come to check us, if there is any mistake, the minimum will be a few whips, and the worst may be killed." The people said very easily, if such a job is not done well, it is deserved to be killed.

"Yang Heng, tell me, what are you doing this for?" "Safety, Your Majesty, since this biogas can be ignited, then there must be something else, if you don't take care of it, once it has any problems, it will be a big deal, just like what happened in the legendary swamp will also happen here, so whoever wants to do this thing, there must be a set of such rules." Yang Heng originally said that it exploded, but at this time the gunpowder had not yet been developed, and Li Erhui would not understand the words of the explosion, using firecrackers as samples, what are firecrackers, and the bamboo was thrown into the brazier to burn, and then made some popping sounds, what demonstration effect could it have.

"Here?" Li Er came out of the duty room, and then entered the boiling water room on the side, and the people in the room stood aside, no way, there was boiling water everywhere, and at this time, Yang Heng and the guards were standing beside Li Er, this Li Er's legs were too brisk, and before anyone reacted, he came in, "Boiling water room, Your Majesty, let's go out and say, look here, there is nothing else except the kettle," Yang Heng begged Li Er, this place is not fun, boiling water, too dangerous, One accidentally kicked over a pot of water, if it scalded Li Er, or frightened Li Er, it would be terrible.

"Alright, alright, I'll get out of here," he said, glancing at the clothed jugs, "boy, what kind of good thing is this, and don't tell me about it." "When Li Er saw something he didn't know, he thought that Yang Heng was keeping it a secret, if you don't have anything in the palace, can you still look at these clothed kettles?

Hurriedly glanced at this, Li Er didn't see how to boil water, just saw the kettle all over the ground, and the heat in the room, but this is enough, it is convenient to use hot water, this is Li Er's only idea, and he hasn't seen anything like fireworks, and there is no smell, I think for the most advanced briquette stove at this time, it is this briquette stove is also made by Yang Heng, this biogas boiling water is the cleanest, there is no smell, there is no smoke, and even the speed of boiling water is not slow, in short, Li Er saw the good side.

"Your Majesty, it's a toilet, don't go in." Toilet, there are four places, there are two places used by the main family, naturally it is divided into men and women, a male toilet, a female toilet, is designed according to the kind of toilet in later generations, squatting type, there are two toilets in the women's toilet, and there are four toilets in the men's toilet, this is because most of the guests are men, and the direction of entering the toilet is also different, basically there will be no man and a woman to meet outside, that's it, on the outer wall of the toilet is still written men's toilet, women's toilet two words, and even painted on the pattern of men and women, Generally, you won't admit your mistake, that's it, if someone else takes care of it, there won't be any embarrassing things.

On the other side is the toilet of the people, which is also divided into men and women, and there is no difference from the toilet in front, that is, the statement is different, and similarly, this is Yang Heng in order to avoid trouble, and set up so many more toilets.

"Your Majesty, it's dirty inside, it's very dirty, it's better not to go in." This Li Er was curious about what the place was, even if it was a toilet, he didn't want to let go, when he entered the men's toilet, the female dependents behind him naturally stopped, and then he was taken into the women's toilet on the other side by the little lady.

To say that the inside of this toilet is really not very dirty, the cement brick wall, the top is smoothed with cement, and then there is a layer of white lime on it, if it is said that it is whiter than Li Er's palace, it is impossible, but it is much stronger than the average small rich house, but to say the degree of solidity, there are not many buildings that can compare, the ground is also a cement floor, and even in the toilet pit is a waterway, which will regularly release water to wash away the feces below, which is also what Yang Heng said.

"Yang Heng, tell me, is this the cement you are talking about?" Li Er stepped on the ground and asked, because he rubbed the ground a few times with his feet, but instead of rubbing the ground with soil, he rubbed some sawdust off the soles of his wooden shoes.

"Yes, Your Majesty, this is plastered with cement, the degree of solidity is still good, the minister is guilty, and he didn't report to Your Majesty in time, this is all a delay." Yang Heng had no choice but to quickly ask for guilt, if it wasn't for the eldest grandson's anger this time, Yang Heng would not have reported it, this matter was too cumbersome, and Yang Heng would naturally forget some things. (To be continued......)