For salt production, Liu Tong is also the first time, but his limited knowledge is very mysterious in this era. In the expectant eyes of Cao Hong and dozens of his subordinates, including the red carp, Liu Tong did not hesitate.

"The ore is crushed with a hammer and then put into a stone mill to grind them into powder!" Liu Tong said firmly.

When everyone heard this, they didn't wait for anyone to give an order, and they all picked up hammers and jingled bells and rang them on the ground.

Isn't mineral salt white crystals, how can it be such a color? Liu Tong wondered, is the quality of this mineral salt not good? Liu Tong originally thought that the legendary well salt was basically the same as table salt, but no matter what, since this mineral salt has salt, it should be able to make good salt.

Liu Tong also asked people to stuff small sand stones and Xisha into some large wooden funnels, and also asked people to break up charcoal, wrap it in cloth, and stuff it into another wooden funnel.

The crushed small pieces of ore were swept up and put into the stone mill to grind into powder, Liu Tong commanded people to put the powder into the bucket and stir, and the red carp also carried a stick to stir it, Cao Fu and Cao Zhen couldn't bear it for a long time, and they also held a big bucket and stirred.

After enough stirring, Liu Tong asked people to pour the water from the bucket into several layers of gauze and filter, the turbid water became slightly clear, and a large amount of powder was left on the cloth.

Liu Tong poured the water after the first filtration into the sand and gravel loophole and then the charcoal funnel, the filtration speed was not fast, but the prepared funnel was enough, and it was enough.

Judging from the preparations, Cao Hong attaches great importance to today's experiment, or Cao Cao attaches great importance to Liu Tong's statement on the purification of table salt.

The filtered pale cyan solution fills buckets one by one, but the color has changed dramatically. Cao Hong exclaimed, the use of charcoal made Cao Hong look up to Liu Tong with admiration, and strengthened his confidence in Liu Tong.

The red carp was also sweating profusely on the side, and his heart was full of joy, his brother Tong was so capable, General Cao admired it very much, and he was not completely dependent on others, and he did not rely on other people's relief or sympathy to live. Maybe Liu Tong can do something bigger in the future, and the red carp firmly believes in this, sweating profusely, and his face is full of happy and confident smiles.

A row of cauldrons had already been prepared, and the solution filtered through a sand and charcoal funnel was poured into the cauldron, and the firewood was burned. Red carp, Cao Fu, Cao Zhen and others surrounded the cauldron, constantly directing the servants to add firewood, the steam in the pot rose, and the water slowly decreased.

Liu Tongtong scooped some water from the pot with a clay bowl and licked it, although it was hot, it only had a salty taste, basically no bitter taste, charcoal is a good detoxifier!

Cao Hong couldn't bear it, took the pottery bowl in Liu Tong's hand, tasted it too, and laughed! Cao Hong knows that success is not far away!

Cao Hong also has his own careful thoughts, since Cao Cao knew about Luo Hu's relationship with him through Cao Ang and handed over this task to himself, he had to seize this opportunity. The secret of salt is in his own hands, undoubtedly he has mastered a gold mine, Cao Hong loves money and has money, but in the face of such a gold mine, he can't help but tremble, his blood is surging, and he is full of pride.

Cao Hong looked at Liu Tong and was very happy, that veteran Luo Hu not only saved his life on the battlefield, but also sent himself such an excellent son and nephew after his death, it was really his own lucky star.

After a row of pots dried, the bottom of the pot left a thick white hard shell, slightly pale cyan, the firewood was removed, Cao Hong pushed away Cao Fu who was blocking in front, endured the heat, reached out to lift a piece, put it in his mouth, poof, puff, Cao Hong vomited, and danced with his hands, "Good salt, salty!" ”

Cao Hong snatched the shovel from the hand of a subordinate, shoveled salt from the pot and put it into a clay pot brought by the steward, filled most of the jar, threw the shovel, and ran out with the jar.

"Prepare the horses!" Cao Hong yelled at the steward who was chasing behind him, and when he went out, he didn't forget to turn around and shout at Liu Tong, "Big nephew, you have made a great contribution!" ”

After speaking, he jumped on the horse, and was so happy that he ran away like a champion in the later life.

The steward and commander cleaned up the scene, and everyone was more polite and respectful to Liu Tong, and even Cao Fu, who was a little cold before, also warmed up to Liu Tong.

After returning to the house, the red carp still did not come out of the joy of success, and kept talking while helping Liu Tong scrub with a towel.

Liu Tong didn't feel anything, in later generations, salt was a very ordinary thing, such purification, a little bit of reading elementary school students can do it, but the happy mood of the red carp still infected himself.

What makes Liu Tong happy is not the success of salt making, but the happiness of the red carp, the red carp has paid too much for herself, and it is a great achievement for Liu Tong to be happy and proud. In this world, red carp is his only relative!

After the red carp helped Liu Tong scrub it clean, he also scrubbed it himself.

The two sat on the desk, the red carp continued to sew clothes, and Liu Tong was bored.

"Red carp, I've been busy for so long, take a break, why don't I tell you a story?"

"Childe, do you still tell stories?" The red carp put down the needle and thread, sat down solemnly, and looked at Liu Tong.

When there is no one, the red carp still calls Liu Tong "son", and Liu Tong is unwilling to correct it, and the red carp still has a strong sense of hierarchy in his heart. Another reason is that Liu Tong doesn't want to emphasize the brother-sister relationship between the two, because in Liu Tong's heart, the two depend on each other, and he will eventually marry her, which is somewhat awkward to be commensurate with brother and sister.

There is no entertainment in this era, Liu Tong has long wanted to tell stories to the red carp, but he can't stand the single life of the red carp, although he no longer goes out to run for food and clothing, but he still can't stop doing all kinds of work all day long. This is unbearable for Liu Tong, and he is also very bored, and telling a story is a kind of fulfillment for both of them.

Liu Tong's most familiar story is undoubtedly "Romance of the Three Kingdoms", but he can't tell it, and there are not many other stories, so let's do it.

There is a country overseas, called Proud Country. The country is close to the sea, and there is a famous mountain in the sea, which is called Huaguo Mountain. This mountain is the ancestral vein of the ten continents, the dragon of the three islands, since the opening of the turbidity and standing, Hongmeng after the judgment. What a mountain!

At the top of that mountain, there was a fairy stone. There are no trees on all sides to shade it, and there are Zhilan on the left and right. Since the opening of the cover, every innocent show, the day and the moon, feel for a long time, then have the meaning of well-informed. Inner breeding immortals. One day bursts, laying a stone egg, as big as a round ball. Because he saw the wind, he turned into a stone monkey. The facial features are complete, and the limbs are complete. So he learned to crawl and walk, and worshiped the Quartet. Eyes and two golden rays of light, shooting at the Doufu ......

The story of "Journey to the West" is undoubtedly very attractive to the red carp, and time flies unconsciously.

Since then, Sun Dasheng has become a member of the life of the red carp and Liu Tong, and every time the red carp looks at Liu Tong's iron rod, he shouts "golden hoop stick".

In the afternoon, Liu Tong got up early in the morning to teach people to make pancakes, no practice, so he came to the courtyard to practice martial arts, a set of stick method vaguely formed, still not very clear, Liu informed, he had amnesia, the operation of the internal force was not very smooth, the stick method is also seven, seven, eighty, eight, think slowly, I should not be half a bucket of water, but amnesia caused the current situation.

After sweating, Liu Tong stopped and looked at the iron rod, judging from the kung fu, he should have used a stick, but such a thick stick still didn't take advantage of it, and it didn't seem to use a stick. How can it be aggravated? I don't believe that like Sun Wukong, he can have a golden hoop stick, which can be big or small, and let himself take advantage of it, a stick? Could it be a mace? Yes, the mace is very thick at one end, if you thicken the two ends of the stick, you may be able to take advantage of it!

"Luo Gongzi, Luo Gongzi!" Just as Liu Tong was pondering, the housekeeper Cao En walked over to him with a person.

The old housekeeper approached and saluted Liu Tong, and the middle-aged man behind him also saluted.

"Childe, this is Mr. Pu Yuan, Childe's drawings Mr. Pu has been made, the master has not come back yet, please take a look."

Cao En said and let him aside, Pu Yuan was dressed in a short costume, very lean, put down the saddle he was holding, untied the two stirrups tied from the armrests of the saddle, and handed them to Liu Tong.

"Childe's ingenuity, Pu is shocked, I hope Gongzi will give me more advice!" Pu Yuan was very respectful.

Liu Tong looked at Pu Yuan, he should be a craftsman, the status of craftsmen in this era is very low, but Cao En calls Pu Yuan Mr., and Pu Yuan can come directly to Cao Hong's mansion without notice or appointment, Cao Hong is not at home, and the housekeeper respectfully accompanies him, obviously this Pu Yuan is not trivial, it is definitely not as simple as a blacksmith!

Stirrups and saddles are mainly a concept, once you have this idea, it is very simple, and Liu Tong is not good at guiding craftsmen on other production issues, how can he compare with these professionals, Liu Tong looked at the difference, and nodded in approval.

"Mr. Pu is polite, this thing can be used comfortably, just let people ride a horse to test it, practice is the only criterion for testing the truth."

"Practice is the only criterion for testing the truth......" Pu Yuan bowed his head and pondered.

Liu Tong knew that he was speechless, so he quickly opened the topic, "Sir, if my stick is thickened at both ends, is it easy?" ”

"Oh, this is simple, Childe, just leave it to Xiaxia, it is a great honor to serve Childe in Xia." Pu Yuan said.

"It's okay left and right, or I'll go with my husband." Liu Tong was bored at home and wanted to go out for a walk.

Pu Yuan was very happy, picked up the saddle, led the way in front, and left Cao Hongfu.