In order to excavate the use of lime as comprehensively as possible, Li Zhi took Liu An to do a lot of experiments in the following period.

Under Li Zhi's deliberate guidance, they not only discovered the drying properties of lime, but also discovered the medicinal properties and adhesion of lime.

The main thing is that Li Zhi took the opportunity to make cement.

In the small courtyard where Li Zhi lived, a small piece of cement paved ground was being hardened at this time.

Li Zhi is now excitedly looking forward to the fact that this ground can take shape as soon as possible, and then he will have one more business that can make a lot of money.

Of course, there are many failure cases in the process of experimentation, so as to show the authenticity of the experiment.

Otherwise, it would seem that he is too miraculous.

Recently, Li Zhi has indeed been a little too high-profile.

Now many officials in the court have begun to discuss Li Zhi's recent performance.

Some officials who had previously stood in line had even secretly advocated Li Zhi's threat to the crown prince's throne, in an attempt to remind Li Shimin that his preference for Li Zhi was a bit excessive.

Although Li Zhi was not afraid of this, he also did not want to form hostility with Li Chengqian too early.

This is also the reason why he helped Li Tai last time.

The fat man's thirst for power manifested itself much more evident than he did.

It is best to keep Li Tai's position as much as possible if possible, and let him charge in front.

After preparing for such a long time, Li Zhi felt that it was time to make refined salt.

Therefore, he took advantage of another mid-year break and began to take Liu An to get busy.

He first turned some coarse salt into brine, which he then poured into a filtration unit of his own design.

The top layer of this filter is a layer of hydrated lime, with a piece of sand cloth underneath, and the second layer is some plant ash, and two layers of sand cloth are laid underneath.

The brine flows down the filtration unit and finally into a copper basin.

Then he and Liu An quietly waited for the turbid salt water to settle naturally.

While waiting, Liu An couldn't help but ask, "Your Highness, do you really think that this will purify table salt?" ”

Li Zhi didn't say it to death.

He just pretended to be indifferent and said: "Whether it works or not, you will only know if you try it, and this king should at least not be worse." ”

Liu An has also been accustomed to some of Li Zhi's strange practices these days.

Even two days ago, Li Zhi used quicklime to stop the bleeding of an injured kitten.

The two chatted with each other while staring at the salt water in the copper basin.

It took more than ten minutes for the basin of water to completely settle.

Li Zhi asked Liu An to carefully pour the salt water into another copper basin.

Then the copper basin was heated with fire.

It was not until more than half an hour had passed that the brine in the copper basin slowly boiled dry.

Some white crystals began to appear at the bottom of the copper basin.

Seeing this situation, Li Zhi hurriedly asked Liu An to remove the copper basin from the fire.

The two of them watched as more and more crystals in the copper basin grew.

After the copper basin cooled down, Li Zhi wanted to take a little crystals from the basin and taste it.

Unexpectedly, Liu An stopped him, and said at the same time: "Your Highness, wait a moment, let the servants come first." ”

Although Li Zhi knew that the refined salt in the basin was not poisonous, he was still very moved by Liu An's performance.

At this moment, Liu An must not know whether salt is poisonous.

But in such a situation, he still did not hesitate to get ahead of him.

Just when Li Zhi was moved, Liu An had already put some salt into his mouth.

There was a hint of nervousness on his face.

But the tension didn't last long.

Pure saltiness soon took over his palate.

He savored the taste carefully.

Then he said excitedly to Li Zhi: "Your Highness, the slave feels that the taste of this salt is purer than that used by the royal family. ”

After Li Zhi heard his words, he also showed a relieved expression on his face.

He pretended to be comforted and said, "Fortunately, it was successful, otherwise I would have to find another way." ”

With that, he also reached out to dip some salt and taste it.

Unexpectedly, Liu An stopped him again.

I only heard Liu An say: "Your Highness, the slave thinks it's better to try again." ”

Li Zhi asked, "How else to try?" ”

Liu An thought for a while and said, "Your Highness, can we use this salt to make a meal of cat food for that injured cat?" ”

Li Zhi looked at Liu An and smiled: "Did you take that cat as our experiment?" ”

Liu An smiled awkwardly and said, "Since His Highness saved it last time, then it doesn't hurt to let it try salt again this time." ”

After listening to Liu An's words, Li Zhi said, "Then listen to you and let people make cat food for that cat." ”

After saying this, he said to Liu An: "Since lime has so many uses, we can't waste it in vain, right?" ”

Liu An asked suspiciously, "Could it be that His Highness has any new ideas?" ”

Li Zhi said: "This king wants to promote lime so that more people can enjoy the convenience brought by lime. ”

After listening to Li Zhi's words, Liu An frowned and said: "Your Highness, although this lime has a wide range of uses, everything must be understood by words alone, I wonder if Your Highness has a plan to promote it?" ”

Li Zhi smiled: "It's simple, we just need to make things for people to see." ”

Liu An didn't understand too much, so he asked again, "How?" ”

Li Zhi said: "We can use it to build a house. ”

After Liu An listened to Li Zhi's words, he began to recall.

The properties of lime quickly flashed through his mind, and he found that the method mentioned by Li Zhi was indeed the best way to show the use of lime.

Thinking of this, he couldn't help but look at Li Zhi with admiration and said, "Your Highness's brain is really flexible, and he actually thought of a way to promote it so easily. ”

Li Zhi said with some pride: "How can this king's intelligence be comparable to ordinary people? ”

After listening to Li Zhi's words, Liu An nodded very approvingly.

He didn't think there was any exaggeration in Li Zhi's words.

As Li Zhi's personal eunuch, he knows everything about Li Zhi too well.

Whether Li Zhi is studying, studying medicine or studying things, everything has shown a talent far beyond ordinary people.

In addition, Li Zhi's talent in business is also not far behind.

The brand concept he proposed is being accepted by more and more merchants, and he has thought of compiling laws to protect the rights and interests of merchants in advance.

Liu An has learned a lot from Li Zhi recently, and the most beneficial thing for him is recording and summarizing.

This makes it easier for him to remember the lessons of his failures and to find solutions quickly.

There is no doubt that the cat did not have any adverse reactions after eating the cat food.

This means that they have succeeded in improving the way they produce salt.

After seeing the results, Li Zhi said to Liu An again: "Let's study sugar making again..."