That night, when it was already dark, Vincent fulfilled his promise and handed over the two newly rubbed music boxes to the Grand Duke of Xia De.

This time, the style was specially customized by Vincent locally, because there is high-quality quartz sand in the dry channel of the Sweet Water River, so it is a good choice to make glass with protection.

Compared with making wine bottles, it is not difficult to make the sphere of glass music box, but the difficulty is to control the purity of raw material ratio and cost, otherwise the color of the glass will be difficult to stabilize, resulting in the inability to see the contents clearly.

Ordinary glass is made by smelting materials such as quartz sand, soda ash and limestone, and belongs to a mixture of silicates with irregular composition.

There is no need for equipment in the production process, and it is not affected by the site environment, so it will not affect the color of the glass and reduce the transmittance.

The local quartz sand probably contains possible iron ions, so even if there is no problem with the temperature and steps of the firing process, the whole will still appear green, and the thicker it is, the greener it will become.

It's okay to make wine bottles, but if you make transparent white glass or ultra-clear glass, it's a bit of a headache.

Not an expert in chemistry and glass technology himself, Vincent could only use common sense and supernatural powers beyond common sense, and also found a bunch of low-level monster slimes that might not be used in battle.

"Brother, what are you going to do with the slime?" Said, who had been following Vincent's ass and couldn't get rid of it, asked, "Do you need me to improve them?"

"Yes." Vincent nodded, "There is a limit to the growth of slimes, and the individual size can't be too big, but I want to be big."

"What's so hard about that?" Said said happily, "Let me build a big house, is it enough?"

"Maybe I'll need it in the future, but I don't need it now, as long as I have the size of a vehicle."

The protection of the gods of nature and life worked, and Syd easily put together a group of slimes the size of watermelons into the size of a horse-drawn cart.

"I'm going to use the biological characteristics of slimes to screen and process the raw materials, remove the iron components that are not conducive to making glass, and select the purest ingredients possible." Vincent pointed to the slime and said to his brother, "This clean slime has to have a high-velocity flow of water in its stomach, and I'm going to use it to wash the sand and separate the heavy liquid."

One of the clean slimes was not enough, and Syd fought a few more.

"This strong acid slime, I'm going to use the strong acid in its stomach to pickle the sand, using weak acid at first, and strong acid the second time, preferably to the level of aqua regia."

"What is aqua regia?" Said looked interested, "Sounds amazing."

Vincent gestured with his eyes to Ninia, who was following him to take notes, although Schalke was broken, but he was also an aristocrat and had taught children to write, so Ninia was still learning quite quickly.

"Aqua regia is a highly corrosive acidic substance, which is a mixture of concentrated hydrochloric acid and concentrated nitric acid in a 3:1 ratio by volume." Ninia replied, "Even gold can be dissolved by it."

"Che, I'm pretty good at talking." Said complained unconvinced, "Work hard, if you dare to have an idea that you shouldn't have, you will replace your lower body with a livestock."

Although she nodded slightly, Ninia's face showed a stubborn expression of not admitting defeat.

This little guy is babbling, and he is not the master she admits to be, and she doesn't think she should listen to him.

"Said, needless to say, my toys are very good and I love to learn." Vinson said, "Get along."

"I'm very good, too!" Said pouted and muttered, "She's not as good-looking as me, she's not very feminine, she's all chosen by the light, and she feels completely different from her mother."

"No one can replace Mother." Vincent stroked his head and reassured, "Time is pressing, I need other tools. My toys, let La Niña come to me."

In order to get better results, Vincent also hired La Niña and asked the archmage to artificially make magnets using magic such as heating, discharging, and cooling.

La Niña will use different kinds of elemental magic, some of which may not be very strong, but try to do something east

West is still enough.

After all, she is a high-achieving student who can get a graduation certificate from the General Academy of Magic, and all the intentions expressed by Vincent can be understood with a little explanation.

After a period of cooperation, the two have some tacit understanding.

Through this attempt, Vincent also determined that the direction of the magnetic field in this world should be the same as that of the original world, and when heating metal, the molecular structure in the iron rod can be consistent with the direction of the geomagnetic field, and rapid cooling can make it magnetic.

So, Vincent also made a batch of simple compasses, ready to equip his own volunteer army in the future, or sell them to the people.

After all, people are not like some monsters, they are born to determine the direction, and the guide is useful for all walks of life.

With the magnet, the fine iron sand contained in the quartz sand can be washed out, and when the black crumbs that stand up on the magnet cling to the magnet, not only the fun-loving Seid, but also La Niña will be pleasantly surprised.

Today, I have seen a lot of things that have not been taught by the Magic Academy, and the lord is really hiding them.

"If I have batdemons around me, I can have them scrub the sand with ultrasound, so that the sand will not be polluted by the machinery, and it will take less time......

After a few words of introduction to the missing technology, Vincent changed his words and snorted coldly.

"Humph! However, I just don't like those Bloods, and even if I can't make new toys from the Bloods, I don't want any help from the Bloods!"

"Brother, the blood clan also has the benefits of the blood clan, and there are many monsters among them that are very interesting." Said complained, "Huh? Isn't your fiancée of the Blood?"

Yes! Ninia's heart thumped, and the pen and paper in her hand fell to the ground.

I really heard a lot of big news today, the lord has lost his mother, and his fiancée?

What is that Bloodline woman like?

"Why should I keep a marriage contract that I didn't want to make?" Vincent asked impatiently, "The Great Bloodline announced that Lutman himself is a pervert, and his daughter is blue, and I can't hide from it."

"Really? She's obviously known as one of the four beauties of the Demon Domain......" Said didn't pay much attention to Vincent's embarrassment, and continued to break the news, "At least I think Sister Cecil is good, righteous, and can handle it."

"Ten years ago, if my magic teacher hadn't found out sooner, my life would have been in her hands......" Vincent didn't think so, "forget it if you come, if she does, I'd rather run away."

The two brothers were chatting around one after another, and the slimes and the monsters had already gone through the process of screening out impurities according to Vincent's request, and the speed was not too slow.

Soda ash and limestone can be made by alchemists, so this time the merchant brought some, enough for Vincent.

In the future, if necessary, Vincent also plans to establish several mines and workshops to provide these basic chemical raw materials in large quantities.

After using his glasswork skills, Vincent tried several times, and finally got a relatively transparent white glass, which was not in vain.

When you want to mass produce in the future, tonight's results can be a valuable experience.