readx;?(Thank you for the tip of the Phantom Lizard ~~Thank you~~)

It is not an easy task to get these Taoists who advocate escaping from the world and cultivating pure inaction to work for the world. Pen "Fun" Pavilion www.biquge.info

But fortunately, this Zhengyi Alliance is in charge of teaching Qingsong Dao, and he seems to be a smart person.

"Two Dao Leaders, next, let's go to the sulfuric acid laboratory."

When he entered the next room, Qingyun, who thought he was going to see some advanced "magic", twitched his nose and was suddenly stunned.

"Isn't that the smell of sulfur?" Qingyun, who has been alchemy for many years, assured that he was not wrong in judgment, after all, sulfur is equivalent to one of the necessary medicines for every furnace, and that special smell is difficult not to impress.

And the green pine on the side naturally cast a puzzled look at Liu Chan.

The latter frowned when he first walked into the house, but after thinking about it for a while, he probably guessed the reason.

It stands to reason that they did not use sulfur to make sulfuric acid, but used pyrite, after all, the former is not easy to obtain in natural quantities, and it is mostly used for medicine. The sulfur dioxide produced by pyrite in a simple boiling furnace has a pungent smell, but it can't help but smell different from sulfur, and it will not leak out and be smelled in the sealed environment that Liu Chan has repeatedly strictly requires, after all, this thing is poisonous.

However, in fact, pyrite can also be used to refine sulfur, but the technical requirements, especially the introduction of oxygen, are extremely strict, and the production of sulfur dioxide from pyrite can also be barely controlled by relying on the experience of the ancestors and Liu Chan's systematic knowledge, and the production of sulfur will oxidize the sulfur if it is not careful, and it will become a strange thing.

Most of the sulphur they smell now is part of the natural adhesion to the large amount of pyrite chips, which is accidentally produced by heat in the upper part of the boiling furnace.

But how to explain these to the two Tiancang Mountain Zhengyi Daoists beside him who are like curious babies?

Liu Chan was very distressed.

But fortunately, seeing that Liu Chan was a little embarrassed, Qingsong Daoist looked away with interest, and asked instead: "I don't know what the sulfuric acid in the young master's mouth is?" ”

While sighing that the other party's ability to observe words and expressions is really old-fashioned, Liu Chan asked Ma Husi to bring a small sealed glass bottle from the side.

"Be careful, this thing is sulfuric acid, the corrosion is extremely strong, the concentration of sulfuric acid in this bottle is still low, although the damage is large but limited, if it is extremely thick, if it comes into contact with it for only a moment, only white bones remain."

Liu Chan's words said that the two Daoists who were more than a hundred years old together were stunned for a moment, and what made him a little ridiculous was that it was clear that both of them were full of silver, but the Qingyun Dao man, who was a junior disciple, was still hiding behind the Qingsong Dao man, and the latter stepped forward slightly.

It's a habit that has taken many years to develop.

Liu Chan shook his head and put this scene behind him, and then took the two of them to a laboratory bench, ready to show the properties of dilute sulfuric acid.

The so-called test bench is nothing more than a wooden table painted with a layer of resin, and of course, for this era, the novel shape still provokes a burst of novelty in Qingyun and Qingsong.

"This young master, where did you get so many strange ideas?" Qingyun sighed secretly.

Of course, Liu Chan didn't know that he was being regarded as a strange thing by outsiders, but he put on a specially configured disposable soft gold glove, picked up a glass rod, dipped a drop of dilute sulfuric acid and dotted it on the prepared linen.

I saw that the moment the linen cloth came into contact with it in the blink of an eye, it instantly turned black, and then formed a hollow, gradually spreading around.

If this didn't shock Qing Song, his eyes widened instantly when he saw Liu Chan take out another small packet of iron powder and pour it into the mysterious liquid that had been poured out of it.

After the bubbles appeared, the original black iron powder turned into a light yellow precipitate.

Where does the green pine that has been alchemy for many years not know the changes that will occur after the iron is eroded at this time! He was shocked by how fast and so fast the iron powder was corroded! This is a scene he has never seen in his decades of alchemy.

And this is not over, Liu Chan didn't know where to take out a worm that looked to be dead, and poured out a little dilute sulfuric acid and threw it in.

The result was obvious, the corpse of the worm was instantly corroded to only the residue, swift and ruthless.

"This thing is so powerful?"

If this is used to defend the city, a bucket will definitely turn it on its back, and even the ladder for the siege will be corroded! Thinking of this, Qingsong Dao couldn't help but have his hair standing up, and even his gaze at Liu Chan became a little unkind.

Of course, Liu Chan was aware of this. Quietly, he picked up the glass bottle containing dilute sulfuric acid, walked to a place where a finished cement was placed, squatted down and gently poured the sulfuric acid into the groove.

If it is general cement, it can not resist the erosion of sulfuric acid, although it will form a dense layer on the surface, but it can not resist for long, but from the beginning, Liu Chan made composite magnesium chloride Portland cement, which has good corrosion resistance and salt corrosion resistance. However, despite this, the embankment built in this way could not last long, but there was no other way in case of emergency, after all, the iron weapons were already strictly controlled by the war.

Seeing the stone-like thing that bubbled up slightly and then didn't react, Qing Song's expression became complicated, and he asked for a long time, "Is this the cement used to build the embankment?" ”

Liu Chan smiled and nodded, and then recycled all the experimental waste without saying a word, and the soft gold gloves that he took off would be re-smelted and reused in the near future.

After everything was dealt with, Liu Chan turned around and looked at him quietly and said lightly: "The sword is a gentleman among soldiers, and he still kills countless people; The sword is to kill the murderer, but it can protect the family and defend the country. ”

It is impossible not to understand such a simple truth with the decades of experience of Qingsong Dao people, but they are still a little worried, which shows how much impact sulfuric acid has on it.

"Young Master Zen."

When he walked out of the house, he turned around and said to Liu Chan abruptly: "There are still many things in the mountain, this time Xiaodao and my junior brother went down the mountain for the flood incident, and now that the matter is over, the cement and one thing will be fine, and the two of us should also say goodbye." After speaking, he bowed his hand, but it seemed that he had made up his mind. It seems that the strength of the previous sulfuric acid corrosion, and the possible way of using it, has made it a little jealous and disgusted. Although Taoism is not a Buddhist, it is also the right way, and it has its own feelings of compassion and compassion.

Liu Chan smiled faintly as if he had expected this.

"The Dao Leader doesn't have to be in such a hurry, the kid still has some doubts about alchemy and begged the Dao Master to answer it."

……

Liu Chan flickered the Taoist priests on Tiancang Mountain in Wuyang, while Zhao Yun in the south led the soldiers and horses from the camp.

The heroic face was now expressionless, resolute and perhaps sad.

He knew that in a few days, these soldiers and men behind him would lie down on the land of the south forever.

There will be knife wounds, and there will be broken soldiers.

It's just that the Great Wall is still a dead letter. He believed it, but he didn't dare to disbelieve it.

Half an hour later, this brave warrior laughed miserably and howled loudly!

"Behind us, we are the fathers and elders of the family, the neighbors of the country, and the homeland of our world, and now that the barbarians have arrived, I have a knife in my hand, what should I do?!"

What answered him was the cry of the soldiers who had lost their lives under the swords of barbarians and even the corpses of their comrades who had eaten flesh and bones.

"Dang!"

"Punishment! Whereas! Kill! It! ”

After a sound, the ground was flattened, and there was a shock.

;