Five days later, the exploration of the two dwarves officially ended, and good news came back: there was a small iron ore hidden next to the vein gate provided by the steward, accompanied by a small amount of Mag's crystalline iron and devil's iron. Mag's Iron Xu Zheng didn't know what it was, there was no such thing in his previous life, but according to the dwarf, this thing is good, and if you mix it up, you can make and forge a very elastic iron material. Devil Iron Xu Zheng only studied the sample brought back by the dwarves once, and knew that it was magnetite, and the dwarves did not understand where its properties of attracting other iron substances came from, and some feared that it was a relic of the devil, so they called it devil iron.

It's not surprising that magnetite is mostly associated with iron ore. It's just that what makes Xu Zheng very happy is that with this thing, if he can make copper wire, he may be able to make a generator. What will the illuminated Orson Manor look like? Xu Zheng was looking forward to it. This is a cross-sport entry into the electric age, and if you use magic to power electricity, it is still all green and pollution-free!

The manor's sewage system took up most of the labor, and the two dwarves had no manpower to open the mine, so they had to turn around and join the work here, and then work on the other side when they had the manpower.

The dwarf and the dwarf get together, and the effect comes out. While fiddling with each other, they came up with a pretty clever way to add threads to the connecting pipes to make them fit together better. Even Xu Zheng didn't expect this, and he originally planned to seal it with clay and burn it with fire-based magic. As soon as the method of thread splicing comes out, the safety factor rises greatly, and there is almost no need to consider the problem of leakage.

Next, Xu Zheng was evil of hydration magic, and finally learned the second-order wave impact. After using this magic, there will be waves to impact the enemy, and as the rank increases, the number of wave impacts can theoretically reach fifteen times, and now Xu Zheng can do it four times.

Four times is already good. Especially a half-tone magician like Xu Zheng. It's just a super level of play. This made Garcia very angry, the fireball technique is still a fire bomb now, the fire wall technique was actually used by him to burn the pot, and what is even more excessive is that he has a ready-made fire system to teach and does not learn, and he prefers to learn the water system by himself, which is simply ignorant of lifting! In fact, what makes Garcia depressed the most is. The lowest level of the fire system can't be taught, and the second order of the water system is self-taught, and it's too face-saving, this is the most infuriating place. If he could, Garcia would have summoned a heavenly fire to kill him!

In fact, this is not to blame Xu Zheng, he himself has no interest in offensive magic. The reason for learning wave magic is that you can borrow it to draw a magic circle, which can be used as a power in the pipe to push the waste forward and avoid clogging the pipe.

Knowing this, Garcia turned his anger to joy. He even maliciously thought that he should really try to find a water magic teacher for Xu Zheng. When this teacher knew that he was using wave magic to do this, it was estimated that without taking action himself, someone would not be able to stand it and use earth-destroying magic such as tsunami or wild waves to bombard him.

Xu Zheng didn't know Garcia's joy and sorrow. In fact, he was very afraid of Garcia, and when he saw him, he took a detour, first, because he was afraid that he would be mad, and secondly, because he felt guilty in his heart, as if he was a student who was very useless, and he was not as good as the three brothers of the Balil Beast Clan. These three now meditate all day. You can also put a small fire and pop it up, and the level is quite ...... with yourself The volume and temperature of the fire bombs released by themselves are not much stronger than theirs.

Xu Zheng is also self-effeminate. The three little ones could only release one fire bomb after a whole day of meditation. He doesn't need to meditate, he can put as much as he likes, with the Heavenly Dao technique as the foundation, his magic source is very terrifying, and it is not an exaggeration to describe it as unfathomable. The problem was that he hadn't thought of doing this, and if he had done this infinitely in front of Garcia, the old mentor would probably cry with excitement and shout that God has eyes. This student is not wooden.

Why? Tens of thousands of small firebombs were smashed into the area to carry out indiscriminate covering strikes. Whoever sees it will want to cry! That effect is a simplified version of the meteor shower. The quality is not good, and the quantity will kill you! As for the wall of fire used to burn the pot. The wall of fire keeps lit, and it is called a sea of fire, I see where you run, first burn your legs into charcoals!

It's a pity that Garcia doesn't know, so he's depressed. Xu Zheng didn't know it himself, so he was scared and guilty.

Now, this one is pouting and burrowing into the pipe to draw a magic circle. Forrester has old arms and legs, and this kind of tiring work can only be done by him.

This painting is a few days, and others can't help with this, Xu Zheng has been painting for a long time, and his eyes are full of magic runes, and everyone looks like a magic array. The humans, elves, beasts, dwarfs, dwarves, and saplings all looked at him sympathetically, it was not easy to be a magician...... It's not easy to be a magician and an alchemist...... It's not easy to be a farmer...... If he doesn't die of exhaustion, who will he exhaust?

After drawing the magic array in the necessary position, Xu Zheng had already drawn his hands and feet twitching, and when eating, he would instinctively draw a magic array on the breadfruit, and then gnaw it again, and then be rushed away by the impact of the excited waves, which is a common thing. Seeing Xu Zheng sitting in the water blankly, moving mechanically with breadfruit, Ao Sen's heart ached greatly, and he exclaimed: "My son, it's really hard for you! What are you doing to learn so many strange skills? It's all because I didn't find you early, so you can only learn swords from your father, and you don't have to work so hard." ”

Yes, he also found a valid reason for himself to keep the sword out of production......

Finally, after the painting is finished, the pipe is laid into the ditch, spliced, Garcia shoots, and the joint is burned. The old fire magician has a great scenery, and the entire Aosenzhuang is full of fire. However, this fire has spirituality, only burning the pipe joints, not other places, if you don't get too close, you can't even feel the heat, which fully shows Garcia's ultra-high control technique. As a result, the eyes of the entire estate looked at Garcia from looking at him to looking up, and then looking up and looking up and then looking up and then looking up What a high-level magician, this is it.

The tubes are arranged in parallel, one large and two small. The big one is the sewage pipe, and the small one is used to build the water tower in the future to build the city's tap water supply system. The other Xu Zheng sold a pass and didn't say anything.

Next, the Terran magicians, alchemists, elves, and gnomes worked together to draw magic arrays in eight large pits, and finally the orcs covered them to make them solid and strong. The magic array is layered from top to bottom, the first layer is the detection magic array, once it reaches the alert position, the next layer of the flame magic array dominated by Garciga will be activated and the waste will be incinerate. The third layer is the elves' purification array, which will always work to purify waste. The fourth layer is Forrester's Catalytic Demon Array, Xu Zheng deliberately wants to get this out, as for the use, he hasn't had time to say yet. The fifth layer is a knife formation mechanism jointly created by the dwarf and the dwarf, which specializes in chopping objects with a diameter of more than two centimeters, and then handing them over to the upper layers for processing. The sixth layer is at the bottom, as the core of the magic power source and magic link, which is jointly drawn by Xu Zheng and Forrester as the most basic part.

After such six layers, the last thing that comes out can only be ash and pure water. Although it is not yet up to the standard of drinking, it is certainly harmless and pollution-free.

On top of these, Xu Zheng drilled four holes in the ground of each of the eight large pits and connected them with pipes.

Looking at this somewhat redundant move, Forrester asked strangely, "What is this used for?"

"Biogas. Xu Zheng said with a smile. Shu Yu was slightly stunned: "Biogas? are you talking about the poisonous gas over the swamp?"

Xingbadai wrinkled her nose and said, "It's very smelly, and it's poisonous, and it takes a lot of effort for us to purify it." ”

Xu Zheng said with a smile: "It's better to be blocked, in fact, it has a better purification method." ”

"What is it?" asked Xingbadai curiously, in order to deal with it, the elf has been trying to change the environment, but the effect is not great.

Xu Zheng said: "It's just to collect it." In addition to its foul smell, it has a better use, it can be used for burning, it is non-toxic and odorless, clean and harmless?"

Shu Yu was moved: "So strong?"

Ilic thought for a moment and asked, "Is it like sometimes when we mine, we will also encounter gas leaks, which are also poisonous and will explode if we don't do well." ”

That's gas gas, this one is biogas, it's not exactly the same, but there are similarities. This kind of thing that needs to be explained clearly by modern science Xu Zheng couldn't explain it clearly to them, so he had to nod.

Hazeleng said: "The miners are most afraid of the explosion of the mine, and if they are not killed, they will be buried alive." You're too bold to collect it. Are you tired of living, aren't you afraid to blow up the whole manor?"

Xu Zheng shook his head and smiled: "If it's just pure biogas, it's okay if you don't mix it with air." ”

Iliqi thought about it, and it seemed that this was indeed the case. He couldn't help but say: "It's poisonous and has the danger of exploding, except for burning, it has no other use." ”

There is indeed no precedent for the use of biogas in the other world, and the limit of the utilization of domestic waste that Xu Zheng has seen is to store it, convert it from raw fertilizer to cooked fertilizer, and finally use it for farming.

However, just because others can't use it doesn't mean that Xu Zheng won't use it. Biogas, an environmentally friendly and low-cost resource, is a shame to be wasted, and with a single investment, it can bring many benefits.

He smiled and said, "Please open your mind and think about it." This pipe is used to connect the biogas into the households, and the gnome's angle valve is used to close it. Turn it on when you use it, and close it at ordinary times, it won't leak, and it won't be able to poison people, and it can't be exploded. It's about controlling it. ”

Everyone nodded, and they understood what Xu Zheng had asked the third pipe to be used for, which was specially used for biogas pipelines.