According to Yang Ling's request, Cao Cao has ordered his soldiers to set up a large pot in the backyard of the General's Mansion.

In addition, there are charcoal, gauze and other items placed on the table next to it.

Yang Ling placed the dark brown lumps prepared in advance on the table.

This is the brine salt he asked for, which is also the poisonous salt that Cao Cao and Cao Ang call it.

Although there is no technology in Yanyan, it is still hard work.

With the current medical level, if you take too much, you will just wait to die.

"Brother, what are you doing, sir?"

Cao Qing asked curiously.

"Teacher, this is refining table salt."

Cao Ang said and explained everything to his sisters.

"Really or not?"

After hearing this, Cao Qing's beautiful eyes were full of surprise.

Although she was born into a noble family, she also knew the importance of salt!

If Yang Ling could really turn poisonous salt into table salt, it would definitely shock the imperial court!

Just when Cao Ang was about to say something, Cao Cao in front of him glared at the two brothers and said,

"quiet!"

Cao Qing stuck out her tongue and quickly shut her mouth.

Cao Cao and the others all held their breath and stared at Yang Ling closely.

I saw Yang Ling walking to the desk, picking up the tools on the table, and grinding large pieces of brine salt.

After it turned into powder, he put it into a wooden basin filled with water.

Then Yang Ling picked up the gauze and filtered the water in the basin.

After this operation, the water with the brine salt dissolved is much clearer than before.

But this is far from enough.

Yang Ling took another bag made of gauze and put the charcoal powder prepared in advance into it for secondary filtration!

After this time, no impurities can be seen in the water in the basin.

So Yang Ling poured everything into the large pot set up next to him, and ordered his soldiers to start boiling water.

After a while, the salt water in the pot started bubbling "gudonggudong".

If you keep burning like this, you can get salt after the water dries up.

However, although the quality of these salts is far superior to that of salt produced anywhere in the world, due to the impurities contained in it, it will taste bitter, which is not what Yang Ling wants.

Look, let me have a spoonful of Sanhua Dan...oh no, a spoonful of bean juice!

Yang Ling scooped up a ladle of bean juice and poured it into the pot.

Soon there will be scum floating on the surface.

After Yang Ling scooped it out with a ladle, he added bean juice into it again.

Repeat this three or four times, and no more foam will be produced.

Yang Ling dropped the ladle and began to wait patiently for the water to dry up!

In a short time, the water in the pot was completely boiled dry.

Cao Cao and others, who could no longer bear it any longer, hurried forward and took a look.

It didn't matter, they were all stunned.

All I saw was white powder inside the pot.

Yang Ling collected them, ground them, put them into a bowl, and handed them to Cao Cao.

"Please taste it, my lord!"

Cao Cao carefully picked up the spoon, took a large spoonful of salt and put it in his mouth.

Although he was awarded the beautiful legs, he still couldn't help showing a shocked expression!

The salty taste is pure, like table salt, and you can taste it without any impurities!

"For God's sake, sir... you actually made usable table salt from poisonous salt..."

Although Cao Cao was used to seeing big winds and waves, he was so excited that he stammered when speaking.

Cao Ang and Cao Qing on the side also eagerly stepped forward to taste it, but they were also stunned.

If they hadn't seen it with their own eyes, they wouldn't be able to believe it even to death. Those poisonous salts would turn into table salt after Yang Ling's miraculous manipulation!

Compared with the table salt in circulation in the world, the salt refined by Yangling has a pure taste and is as white as fine sand and snow grains. It is the best!

If it can be popularized, it can definitely replace the salt produced in Qingzhou.

In this case, there is no need to worry about financial constraints and the inability to expand the army?

"Sir, you really helped me a lot!"

Cao Cao held Yang Ling's hand and his eyes were extremely hot!

He just married a daughter, and Yang Ling provided him with such a rare and unique method of making salt.

If I marry a few more...

He thought like this and looked at the three daughters Cao Jie, Cao Hua and Cao Xian aside.

Fortunately, the girls were amazed at the salt refined by Yang Ling and did not notice their father's "loving" gaze.

At this time, Cao Ang seemed to suddenly remember something, with a solemn expression on his face, he said to Cao Cao,

"Father, this method cannot be told to outsiders..."

Cao Cao's expression changed, and then he realized that he wanted to keep it a secret.

If Yang Ling's salt-making method spreads, not only will their interests be damaged, but other princes will also benefit.

Thinking of this, Cao Cao growled at Dian Wei,

"After this is over, all the soldiers present will be controlled and no contact with outsiders will be allowed. Do you understand?"

"You will finally understand!"

Dian Wei bowed his hand.

Although these soldiers are Cao Cao's personal guards, there is no need to doubt their loyalty.

But Cao Cao was a suspicious person, and the method of making salt was extremely valuable.

If someone really can't resist the temptation, that will be trouble!

Even if they are not killed, when the salt pond is built later, they must be responsible for guarding it and cannot leave at will.

Cao Cao thought this, and with a straight face, he said to Cao Qing and his wife,

"This matter is of great importance. If you dare to tell others casually, don't blame the father for not thinking about the love between father and daughter!"

Seeing how serious their father was, the girls nodded quickly.

Cao Qing rarely sees her father lose his temper like this!

It seems that my future husband is really the best among men!

Cao Qing looked at Yang Ling with eyes full of admiration and smiled sweetly,

"This thing is so white, how about we call it snowflake salt?"

"The name chosen by the young lady is simple, easy to remember, and extremely appropriate. I think it is acceptable."

Yang Ling said with a smile.

Hearing this, Cao Qing suddenly felt happy.

After some discussion, they decided to divide table salt into two types.

One is salt with no added soybean juice and a bitter taste. It is cheap and mainly targeted at poor people.

The other type is snowflake salt, which is more expensive and is mainly sold to dignitaries and wealthy people.

After Yang Ling wrote down all the methods of making salt, Cao Cao took it into his arms as if he had found a treasure.

But he was just happy for a moment, but Cao Cao became worried again.

"Sir, although the salt-making method is precious, it can make a steady stream of money in the future."

"But now the government's finances are tight and they can't allocate money to start this business."

"Do you have any other ideas?"

Yang Ling thought about it again, then smiled and said,

"I have a way."

Cao Cao's eyes lit up,

"Sir, come quickly."

"The Lord can issue national debt."

"National debt?"

Upon hearing this new term, Cao Cao and Cao Ang were confused.

"Yes, as the name suggests, it is the country's debt."

Yang Ling explained,

"It is to raise funds from the people in the name of the court and promise to pay them interest and repay the principal when due."
Chapter completed!