The simple electrolyzer had already been built for him by Sap. The rectangular electrolytic cell www.biquge.info pen ~ fun ~ pavilion is divided into three parts, each with a water outlet. After filling the electrolyzer with salt water, Chen Xiao began to try to electrolyze salt water to produce high-purity caustic soda.

After all, alkaline water is only carbonate, and in the absence of lime water, he cannot make high-purity caustic soda.

This caustic soda was one of his important killer features in the future.

Copper wires with current, tied to iron rods and carbon rods, respectively, are inserted into the electrolytic cell as cathodes and anodes.

Next, there is the hard work.

Chen knows how to rotate the coil device incessantly, so that the coil produces current. When the poles in the electrolyzer began to produce bubbles, Chen Xiao couldn't help but show joy, "It's done." ”

Under such difficult conditions, various instruments and equipment were gradually assembled to successfully electrolyze salt water. For Chen Xiao, it can be said to be a breakthrough.

Next, he called Alan, Wendy, and Karen over and worked for him. After all, he just has a pair of hands, and he can't be separated.

When the three of them saw Chen Xiao's strange devices, their expressions were no longer surprised, but bunkers.

This so-called electrolyzer device can be said to be the most complex device in Chen Xiao's laboratory.

In addition to the electrolyzer, there are pipes that connect the cathodes and the cathodes, and the pipes are connected to the skin bladders sewn together one by one in sheepskin.

What is this for?

The three of them couldn't see it clearly. Chen Xiao smiled mysteriously, and without saying it explicitly, he instructed the three of them to rotate the coil in turn, cutting the magnetic inductance line to generate an electric current. And then comes the real show.

As an electric current is added, the iron block that is the cathode and the carbon rod that is the anode begin to bubble. This is a by-product of the production of electrolysis of table saline.

The cathode produces hydrogen and the anode produces chlorine.

These are all very useful things.

Because hydrogen is lighter than air, Chen Xiao directly collected pure hydrogen with the drainage method and packed it in a sheepskin bag.

The shriveled sheepskin sac gradually swelled up to the size of a basketball. It's a very good fuel.

The chlorine gas produced at the anode is collected directly, and the pale green gas rolls in the translucent sheepskin sac, which looks very weird.

This chlorine gas is a highly toxic gas and an important raw material for many chemical materials, but Chen Xiao only needs chlorine. And Karen, Allen, and Wendy suddenly felt an inexplicable fear when they saw the pale green gas reflected on Chen Xiao's face.

"Master?" Karin couldn't help but shout. Chen Xiao came back to his senses, looked at Kalian a little strangely, and asked, "What's wrong?"

"What's wrong with you?" said Karen carefully, "You look so strange......

Chen Xiao tilted his head and said, "What's so strange. In fact, he had an impulsive idea in his heart just now, which was to use this chlorine gas to poison Orka.

But this thought was only fleeting, and he was not reassured. It seems that the ancients said that each other is born from the heart, and it is really not groundless. Kalian, a perceptive girl, actually noticed her abnormality at that moment.

"Master, when are we going to go on?" Alan was already crying out. There are more and more weird things from this old man.

"When I'm tired, I take turns to turn around, and I have to collect some more. Chen Xiao said. Seeing that the water level of the brine had dropped a lot, he added new brine to the electrolyzer and continued the electrolysis reaction.

In the evening, Alan and Wendy dragged their sore arms out of the laboratory. They never wanted to enter this horrible place again.

Chen Xiao smiled embarrassedly: "Thank you for your hard work." I'll get you some good food tonight and treat you. ”

"Really, sir, you're so good. As soon as Alan heard that there was something delicious, he jumped for joy. After all, this girl is only seventeen years old, and her mind is still very simple.

Bell Tower.

Orka looked at Chen Xiao and them, who had just walked out of the laboratory, from the window, his face was very ugly. Although Chen Xiao has been doing things under his nose, this guy has been doing some unknown things in the first two days, which is too secretive.

This made Orka feel very uncomfortable.

If it weren't for the huge benefits brought by Chen Xiao, he would have wanted to throw this hateful guy out of Rodri Village and let him drown in the Night Wanderer.

He shouted, "Charol, get in!"

Charol hurriedly walked into the bedroom, knelt down on one knee at the door, and said, "My lord." Charol is here. ”

"Chen Xiao's business, how is it going?" Orka walked over to the chair and sat down, picked up a glass of fruit wine, and took a sip of it pretending to be elegant.

"Your Excellency forgives sins. The villain doesn't have any clue yet. Charol lowered his head, unable to see his face. But the clothes on his body were not leather chain mail like ordinary guards, but neat robes and proper decorations.

It looks like a person with status.

"Charol, aren't you an elite who graduated from the Imperial Capital Academy? Orka scoffed, "My father asked you to come and help me, and that you are very clever, but that's all there is to it." ”

Charol lowered his head and did not dare to refute, but his face was ugly. The hand he held in his arms couldn't help but squeeze tightly, and the green tendons were exposed.

Orka's humiliation made Charol very angry, but Orka was telling the truth.

He observed Chen Xiao for several days, and secretly entered Chen Xiao's laboratory to check Chen Xiao's codex notes, but he couldn't understand anything at all, whether it was those words or formulas, he couldn't understand any of them.

What a beep dog.

Charol said in a flat tone: "Adults, small talents are shallow. If the adults think that the villain is useless, let the villain leave. ”

Orka immediately threw the wine glass at Charol and scolded: "If you don't do a good thing, you want to leave, aren't you too whimsical." Give you two days, and if you don't make any progress, you'll disappear for me. Completely disappeared from ...... world"

Charol didn't wipe the wine off his face, and just retreated out of the bedroom. He faced the bedroom door and stood at the bedroom door for a long time before he smiled sinister and turned away.

"Just a baron, put a score right in front of me, and you will die a terrible death. Charol whispered, and the figure melted into the darkness.

The night is quiet, in the wilderness of Rodri Village, countless nocturnal monsters roam around as usual at night, looking for humans to devour. However, in the quiet of the night, the bell suddenly rang, breaking the silence of the night.

Orka jumped up from the bed at once, and cried out in panic, "What happened, why did the bell ring?" If it rings, it means that there is an enemy attack, or a major incident has occurred.

He still understands this.

The guard hurriedly opened the door and entered the bedroom to report, "My lord, the fish-people have come ashore in large numbers and gathered ten miles outside the village. ”

The Fish-Folk are not humans, so they are not afraid of the Night Wanderers, and the Night Wanderers really don't seem to be interested in the Fish-Folk Clan. Ignore the Fish-People and let them roam at night.

"Those stinky fishmen?" Orka was shocked.

"According to scouts' estimates, the number is between five hundred and one thousand. The guard continued to report.

The village of Rodri is close to the sea, and every year fishmen come ashore to attack the village. Therefore, the empire has a permanent garrison of 100 guards here to defend against fish-man attacks.

At the same time, there will be a giant fish hunting activity every day, hunting the fish-people who come ashore.

Fish hunting has just ended, and those fishmen probably won't go ashore. How did you change sex this year?

And the number is several times more than usual.

Alka suddenly jumped up and hurriedly shouted: "Five hundred to one thousand, we only have a hundred people, plus the villagers who can become combat power, at most five hundred, how can we fight?"

His big teeth were trembling, showing his extreme panic.

"Your Excellency, please make a decision as soon as possible. The guard couldn't help but say.