"Your magic textbook is at least 20 years old, and a lot of the knowledge in it has long been replaced by new doctrines," Ben commented as he looked at the textbook that Rand had bought with a lot of money.

As soon as he left the Earl's Court, Rand went directly to Wendy and Ben Kaul, whether it was the Maned Wolf family or the Red Dragon family, it made Rant's head big, and as soon as he saw Ben, he gave him the textbook he bought, but he didn't expect to get such an evaluation.

"A textbook from 50 years ago is better than no textbook, if you can, you can tell them according to the framework of this textbook, if there is a new doctrine, talk about the new, if you don't have it, talk about the old" Rand has become accustomed to the ungrounded style, and can only explain slowly.

"I'm afraid it's only like this, anyway, is this textbook really going to sell for 45 gold coins? I remember that in the imperial capital, the price of such a textbook, even if it is a new book, is less than 1 gold coin per copy."

Ben flipped through the old books, constantly looking for knowledge points that had been eliminated, but in his heart he was estimating the degree of monopoly of the nobles of the Dragon Kingdom on knowledge.

"You just think that the price is high, people feel that they have already suffered a loss when they flow out of the family, and they still have to report to the Blue Dragon family, obviously selling bulk products, and now they are doing the same as auctions." As soon as he mentioned the experience of buying a book yesterday, Rand lost his temper, gave the book and walked out.

In a stable next to the annex of the Chamber of Commerce, the original fence and haystack have been removed and replaced with wooden tables and iron armor, and there is a set of iron drills, hammers and stoves in the corner of the house.

"Whew..." Wendy put down her magic carving knife and finally carved the final part of the cooling pattern before the blood and ink could mix.

The fourth magic pattern in the morning was finished, and two blood marks were also scratched on the fingers of her right hand, Wendy planned to rest for a while and find Firefly to treat it by the way.

Since Rand went to the royal capital a few days ago, she and the girls Lili had converted the stable into their workshop, and the girls began to public relations the magic container.

The knights of the Chamber of Commerce bought ready-made containers from the market, first carried out preliminary processing according to Wendy's requirements, opened the slots where the magic patterns and wheels were placed, and then sent them to Wendy's workshop to set up and debug the magic pattern plates.

As soon as Rand arrived at the door of the stables, he felt that he had seen the garage of some entrepreneurs who had watched movies in his previous life.

"Well, this box is currently being made, we made 4 samples first, and the fourth sample is the most in line with what you said, so we made 3 of them."

According to Wendy, there are at least 3 magic patterns on each of the 6 sides of this fresh container, a total of 20 pieces, and 2 magic crystals are consumed every 3 days when storing ice water.

"Is the main reason for consuming magic crystals to purify magic patterns?"

"No, it's mainly the ventilation magic pattern and the cooling magic pattern."

"How did you manage to make the internal temperature drop below freezing, and then the cooling magic pattern stopped?"

"Hehe" Wendy's face, you finally asked the right place expression, "The part of the magic pattern is inside the box, we set up a pure water animal skin bag in the box, as long as the temperature is lower than the freezing point, the water bag will freeze, the volume of the water bag will increase, and the increased volume will disconnect the part of the magic pattern in the box, so as to ensure that the box is always in a low temperature state, and will not freeze as a whole." ”

"Low temperature causes deformation and causes the magic pattern to break and fail, right?" Rand pondered, "What about the end result?" ”

"We designed several animal skin bags, and the last two samples worked well, but they were a little unstable after a long period of operation."

"It's okay, it's already very genius to be able to rely on this method, I only gave you an idea that day, but I didn't expect that you have already made a finished product" Looking at Wendy with her hands behind her back, with a "Come and praise me" expression, "And the finished product you made has better functions than I imagined, and it can be done faster." ”

At this moment, Rand feels that he is very much like a product manager who can only brainstorm, and Wendy is a technical master, responsible for turning the vision into reality.

"In fact, the stability after a long time is not a problem, this cabinet is mainly for transshipment, not a fish tank."

"It's just that it really hurts to depict the magic pattern," Rand looked at Wendy's hands behind his back, he could already smell a hint of blood long before he entered the room.

"In this way, you see that if the five functions of firmness, lightness, cooling, purification, and ventilation are retained, the same large cabinet can be achieved with only the least number of magic patterns."

Rand directly took out the magic ink and materials he bought yesterday in the space ring, and then took out a notebook, on which was the magic version of the smoke extractor, electric fan, refrigerator, dishwasher, hair dryer, and vacuum cleaner, which was the result of Rand's brainstorming these days.

As a former engineering student, Rand has illustrated instructions on each product, in addition to the function and style, it also indicates the magic patterns that may be used, and Wendi refers to them.

Those household appliances in my hometown are naturally very wasteful to use magic crystals in the magic world, but if it is a castle with a magic circle or a mansion of a great noble, it is still very convenient to use.

"My lord, what do you think?" Several girls gathered over, looking at Rand's little book and couldn't stop admiring, they couldn't imagine why Rand, as a knight, could conceive so many alchemy products.

Looking at the attitude of the girls, Rand blushed a little, but Rand thought that he was better than those product managers who could only draw cakes, at least he could take care of his own food.

Before leaving, Rand also asked Wendy to make some magic jars and bright sticks this week, which Rand was going to use as souvenirs for his neighbors.

。。。。。

After returning to Dragon's Tooth City, Rand first went to the shopping street of the Demon Charmer, found a tailor's shop, and asked the tailor in the shop to change 8 pieces of clothes into 4 pairs of pants for the little girl to wear.

Rand thought about it again, instead of buying some clothes for everyone he knew, anyway, the demon supporters are actually about the same height. So he followed his own list, and gave his cronies 4 pieces for each man and 5 for women (one more set of pajamas), spent more than 40 gold coins, bought a total of less than 200 pieces of clothes, and also bought some uniform maid overalls and clothes for the people in his core camp.

Of the 4 clothes of the cronies, one is a relatively gorgeous dress, and the other two are relatively plain, and the clothes of the demonsless are simpler, but they still bought small dresses for Nila, Lanya and Makoto.

The 200 pieces of clothes Rand will definitely not be taken back by himself, they are all discussed with the store, and the dog tooth will come and take them away in two days.

More than 40 gold coins is also a lot of money for the nobles of the northwest, but Rand's subordinates used to wear leather clothes, because they only had fur as a material, and they looked like savages no matter how they looked.

After taking the whole territory of Roth, the clothes of the previous Viscount Roth and the vassals were divided, so that everyone could be regarded as looking like a person, and in the future, Rand as a viscount, would definitely socialize with other nobles, and he could not let people see his jokes.

Rand's generosity also shocked the tailor, Rand discussed with him if he could come to Roth's territory next year to open a shop, the tailor himself is a knight of a big family, considered a low-level nobleman, and attaches great importance to being able to gain the appreciation of the nobles on the ground, and expresses his willingness to let his second son follow Rand, and the two hit it off.

When Rand returned to the Chamber of Commerce in Dragon's Tooth City, he saw that there was a lot of traffic at the door, and he was almost blocked by the crowd, so he inquired that it was his own caravan that had arrived.