"Sure enough, it still doesn't work!"

Looking at the soft stuff in the bowl, Feng Yong poked it with his hand and finally grunted.

Although it stands to reason that the finished product must be dried in the shade before it can take shape, but looking at its current appearance, Feng Yong no longer has any hope for it.

Although I was extremely bored and thought about trying to do this with tung oil, I still had hope in my heart. Now that hope was shattered, Feng Yong was extremely disappointed.

Putting the contents of the bowl aside, he lowered his head and looked at the waste liquid carefully. Finally, he sighed and cursed: "Damn it, if I had known, I would have studied chemical industry!"

"Brother, what is the use of this thing?"

Zhao Guang's whole body was shaking slightly uncontrollably, especially his hands, which were shaking violently, looking like a Parkinson's disease patient.

It's a pity that when he looked at what he had worked on for a whole day, he couldn't understand anything.

Feng Yong glanced at this brave guy and said calmly, "It's of no use. It's a failure."

"What...it's of no use?"

Zhao Guang's pupils suddenly widened, and he looked excited: "How come it's useless? How is it possible? I've been busy all day, but it's useless!?"

"I just did it when I was bored."

Feng Yong saw that this guy had the urge to run away, and immediately comforted him, "It's also of some use. After it dries, you can try using it to wash clothes!"

"Only for washing clothes?"

"This works."

Feng Yong quickly pointed at the waste liquid and said.

"What is the use?"

Zhao Guang had doubts in his eyes, it seemed that Feng Yong's credit was temporarily overdrawn by him.

"Apply it to your hands, feet and face in winter to prevent freezing."

The by-product of making soap is glycerin, which is a good thing.

All skin care products of later generations will contain this kind of stuff.

Because it can moisturize the skin, and most importantly, it can prevent the skin from freezing and cracking.

Especially in this Little Ice Age era, when the north is getting colder and colder, the role of glycerol will become more and more prominent.

For the soldiers of the Northern Expedition a few years later, this was an extremely good thing.

However, the Northern Expedition cannot be talked about at the moment, so Feng Yong can only vaguely say that it can prevent freezing.

Moreover, this soap manufacturing experiment is already considered a semi-failure. Feng Yong doesn’t have much hope that glycerol can be filtered out of this waste liquid.

But who calls Zhao Guang chemically illiterate?

It’s okay if I say yes, but if you don’t accept it, use your chemistry knowledge to argue with me!

Of course Zhao Guang has never studied chemistry, but he has eyes.

Looking at this liquid whose color is unclear, if he really believes that applying it on his face can prevent him from freezing, that would really be a test of his IQ.

Then the suspicion in his eyes deepened.

"Of course you can't apply it directly, you have to filter it out again."

Feng Yong believed that Zhao Guang's IQ was not that low. "You need to put some filtered lime water in it to make it."

Potassium hydroxide can be obtained by mixing plant ash water and lime water together.

Only by doing this can the saponification reaction precipitate glycerin.

Although Feng Yong currently does not have lime in hand, he has a lime mine in Hanzhong, and it is a large-scale first-grade mine with hundreds of millions of tons. Even if he cannot produce ideal soap by then, he will still make money if he can produce glycerin.

.

So Feng Yong continued to fool Zhao Guangdao, "I'll show it to you when I get back to Hanzhong."

If we really make glycerin, in addition to selling it to Zhuge Lao Yao for the Northern Expedition, we can also think of ways to add some floral fragrance to it, and make some cosmetics and skin care products to bring delicate skin to the women of strong men, that would also be great.

Then make a slogan: If you want good skin, use Dabao sooner or later. See you Dabao tomorrow, see Dabao every day...

Isn’t it wonderful?

"Someone, bring up that armor."

Feng Yong temporarily deceived Zhao Guang, and then gave orders to his servants.

A pair of shiny armor was quickly brought over.

"How is it? Is it effective?"

Looking at the armor in Old Soldier Lu's hand, Feng Yong asked.

Lu Laozu's face was filled with joy, "It's useful when I go back to my master's house. A few days ago, I applied tung oil on it as Lang Jun said, and then specially poured water on it. After leaving it for a few days, I didn't find anything."

There are signs of rust. It’s very different from before.”

"In the past, armor made of iron, not only if it was stained with water, but also if it was left unused for a long time, had to be taken out and wiped from time to time to avoid rust. Not to mention that if it was accidentally stained with water, it must be carefully cleaned

Just wipe it dry."

"Otherwise, if it gets rusty, it will deteriorate quickly. Now that the tung oil is applied on it, it is not easy to rust. Even if it is stained with water, there is no rust after being left for several days. It is really a good thing."

Of course it is a good thing. Even in the World War II era when industry had developed rapidly, tung oil was still a must-have for maintaining weapons.

It was regarded as a rare strategic reserve material for China at that time.

Even in the 1950s, China still controlled 90% of the world's tung oil exports. No matter how disgusting Meirenxi was, she had to hold her nose and pay high prices to buy tung oil in Hong Kong.

"See? This is very useful."

Feng Yong activated his special skill "Spoken Words" and said to Zhao Guang, "What you just did was just a trivial matter. The main purpose of this tung oil is to maintain this armor and weapons."

"Look at this weapon and armor. It goes without saying that it will never rust. As long as it can be easily prevented from rusting, then the benefits are great. This is a big deal."

Nowadays, most of the armor used by soldiers is leather armor. Those who can use iron armor are at least favored by generals.

The little soldier below is lucky to have a pair of tattered leather armor.

Iron armor has high protection. With it, your chances of surviving on the battlefield are much higher than others.

But iron is scarce to begin with, and iron armor is even rarer.

And its maintenance is also a big problem.

The quality of iron in this era was generally not high. Not to mention iron armor, even the weapons in the hands of soldiers would break when being cut and chopped on the battlefield. That was a common occurrence.

Once rusted, it is more susceptible to damage.

With the large amount of tung oil produced, it is much easier to maintain weapons, not just iron armor.

Zhao Guang may often make mistakes in other places, but once it comes to marching and fighting, it is like a different person.

Immediately he reacted, "No wonder my brother asked someone to send this tung oil over. Is it for this purpose?"

"It's hot and humid in Nanzhong, so armor and weapons are more easily damaged than elsewhere. If it's true as my brother said, this tung oil can make iron tools less likely to rust, then it's a big deal!"

As he spoke, he immediately snatched the armor from Old Soldier Lu's hand and looked at it carefully for a while. Then he raised his head with a look of surprise on his face, "It turns out that my brother went to the mountain a few days ago not to relax, but to relax.

Are you looking for the poppy tung tree that produces tung oil?"

"That's right."

As Feng Yong spoke, he took out another bill from his arms, flicked it, and made a crisp "click" sound, and asked, "What is this?"

"tickets."

"Do you know the difference between the ink on this note and the ink commonly used by others?"

"Of course I know there is oil in this ink."

"Yes, there is oil in this ink. In the future, Nanxiang will not only print bills, but also print more books, so more and more ink will be used. Looking at the whole country, where is the most oil?"

In order for Feng Yong to break the intellectual monopoly of the family, in addition to using a large amount of paper, he also needed a large amount of ink for printing.

If you need to use so much oil, you can’t use lard again, right?

As for where the oil volume is?

Tung oil production number in Nanzhong.

As long as the people of Nanzhong can make a fortune, who will be willing to rebel?

As long as no one is willing to rebel, isn't the political mission assigned by Old Demon Zhuge accomplished?

Do you care if I made money during this period or if I poached a corner of the family?

Obviously, the notes exuding the scent of ink attracted Zhao Guang's attention more. His eyes lit up, "This tung oil has so many benefits, and this tung oil is everywhere in Nanzhong, so don't we have another

Are you going to make money?"

"Vulgar! Really vulgar!"

Feng Yong glanced at Zhao Guang and criticized his lack of grace and restraint, "We came to Nanzhong for the peace of the people of Nanzhong, not to make money for ourselves!"

"Look at how Nanzhong has been ruined by the rebels. The people can't even get peace, let alone food and clothing. So we asked the people to go to the mountains to collect some tung seeds in exchange for food. Then
To be continued...