"Come, little ones." "Yes." This is a new game for Yang Heng with his younger brothers and sisters, he wants to train them to act collectively, perhaps, this year is the most difficult time for these children to play, there will be a master in the coming year, at that time these children will be locked up in the family school to start learning, although there are no children who say that they are interested in the test show talent champion, etc., can learn more words, or should, otherwise how to solve some comprehension skills, you must know that Yang Heng will have some fresh things from time to time, Yang Heng naturally asked them to understand everything clearly, if it was said in the long run, maybe Yang Heng would attract some people to make a rudimentary prototype of mathematics, chemistry, and even physics, so that everyone would have their own research direction.

"Big brother, tell us something fun." Yes, how does this feel like the underworld, it's not as kind as Brother Heng. "Well, some of the equipment in this house has been put into use, and I also need to explain it to you systematically, and you also need to go to the construction site to learn some things about building houses, as well as firing bricks and tiles, naturally, there are some precautions."

With the appearance of coal, biogas, these invisible things that can kill people, Yang Heng also remembered how he crossed over, but it was just a small shovel of coal, and it turned out like this, and even said that he didn't enjoy the heat of the shovel of coal at that time.

"Big brother, what else to pay attention to, aren't these fun things?" Although it is awkward, but the little lady deliberately screamed like this, the word "big brother" is not awkward, that is, the younger brothers and sisters feel that this name is not affectionate, even Yang Heng is not happy, but Yang Heng asked for this, everyone had to shout like this, and they got used to it when they shouted, which seemed more formal, didn't it.

"First of all, let's explain this coal stove, this coal stove is a danger to burn people, you should all know the way, I won't talk about it, but the coal in this coal stove has a gas that can kill people, you don't know the way, right?"

"I don't know Lu Dao, this coal is also brought by my eldest brother these days, how do we know Lu Dao." "Well, now I'll tell you, let's call this gas gas poison for the time being, but don't worry, this gas is poisonous, as long as you open some gaps in the doors and windows, these gases produced from the furnace can't be fatal, you must remember, don't be like the nouveau riche, seal the doors and windows tightly when it's cold, and even paste several layers of window paper on the windows, and the door cracks are also tightly stuffed, and light the coal stove in the room, in that case, it can be said that the gas poison will be stabilized, all remember."

"Remember, but, big brother, is the gas poison you said coming out of the smoke, if it is smoke, people will not smoke it, and then it will run out, can it still be poisoned?" "Naturally it's not smoke, but there is also this gas in the smoke, and the most important thing is that the gas is a colorless and odorless gas, which often poisons people when you don't pay attention. Yang Heng looked at the absent-hearted expressions of his younger brothers and sisters, and naturally knew that they either believed it too much, or Xiaoniang, the child who believed in Yang Heng the most, did not particularly believe it. Not only do they not believe it, how many people were so careless in Yang Heng's previous life, and died overnight, and even some families and several people all lost their lives, every winter as long as the coal stove is used, there will be several gas poisoning incidents, and each time it happens, it can be found in time, and there can be a few people who can be rescued, pay attention, the gas here is the gas produced by coal furnace burning, not liquefied gas, liquefied gas tank accidents, and only seen on TV, and even some factories will have accidents because of workers' misoperation.

"Brother Heng, do you think the biogas will be like this?" Finally, the little lady paid some attention to it, and even changed the greeting back, is it still Brother Heng's affection. And Yang Heng's new game ended with this.

"Biogas, naturally, is like this, but you don't have to worry about this, I don't see that we are mainly used in the kitchen, and there are some large room lighting, but you also have to pay attention to this, after the fire is turned off, you must turn off the switch, and it must be turned off to the position I set, so it is very safe." Biogas, this is a low-pressure gas, itself this biogas digester is sealed with water pressure, then naturally this pressure is small, is Yang Heng's previous life, this kind of biogas digester is also the safest kind of facilities, not only can process manure, but also use biogas residue as fertilizer, or as some livestock feed, or even as pesticides to use, can be said to be a universal thing, especially in this ancient times, that is really the countryside, the treasure of the city, suddenly, Yang Heng found that in this ancient times, No one can do without the use of this biogas, good thing, this invention is good, but the two princesses came to investigate, and Yang Heng was fooled, and even put his eyes on the coal and the coal stove, and even Yang Heng provoked the two princesses to tidy up Li Er and the eldest grandson, just like that, the two princesses actually made Li Er and the eldest grandson have some tears in their eyes.

"Oh, no, we were actually by that kid?" When Yang Heng was stealing fun, Li Er was also reacting, does this stir-fry still need to be cooked, as long as it can't be done in the imperial kitchen.

"Erlang, do you think Yang Heng too badly, he is a good child, and Lizhi and Yuzhang are also here to show the use of this briquette stove." The eldest grandson asked puzzledly, yes, suddenly Li Er also remembered, this is the two daughters who came to show the coal stove, but it's not right, did he let the two princesses investigate the matter of biogas, did this still let Yang Heng wash it, biogas, do you still need someone to investigate.

"Someone." "Your Majesty, you are." The eldest grandson thought that Li Er was still angry, "Guanyin, I want the prince to investigate the methane matter, but the two girls didn't handle this matter well this time." ”

"Your Majesty, don't let the prince go for such a little thing, look, do you want the concubine to arrange someone to call Yang Heng and Xiaoniang to inquire?" The eldest grandson's idea came again, "Yes, my intuition about this matter is that it may be useful, but I don't know if the Dao is really useful or useless, so don't investigate it with great fanfare, just let that kid say it himself." ”