As long as it can cover the surface of the object and form a solid continuous film, it can be called a coating. The coatings themselves can be gaseous, liquid, or solid, and their uses vary. From the initial aesthetic decoration to the later durability of the protective object, it can be regarded as a kind of coating.

Roland then embarked on a series of tests.

He was extremely pleased with the test results, probably due to the idea that "the longer the painting can be kept, the better", and her previous photo paintings were already difficult to completely remove without destroying the carrier, and the evolved ability has taken this feature to a new level.

First of all, this kind of "pigment" with high adhesion and light weight exhibits two completely different properties in terms of physical properties - it can change the flexibility of its material according to the different objects of painting, for example, when painting the sky or clouds, it is as soft as a marshmallow, and it is extremely resistant to stretching and shearing. When replaced with iron ingots and glass, it becomes hard and brittle, and can be directly broken with a hammer. In other words, due to its quality, it is far better than rigidity in terms of flexibility, which is also in line with Soroya's understanding of pigments.

Secondly, no matter what kind of properties it exhibits, its chemical properties are very stable, not only does it not react with dilute sulfuric acid and dilute nitric acid, but also shows repulsion to water and oil. When he filled a paint-coated cardboard box with water, there was no sign of water seepage from the bottom of the thin box. After pouring out the water, the clear liquid beads roll in the box, like dew on a lotus leaf. At this point, touch the bottom with your fingers and it will still feel dry.

In the high temperature test, after Anna poured molten iron into the carton, the paper as the carrier suddenly caught fire and burned, but the coating itself did not change much except that it was propped up a little by the molten iron. It wasn't until Anna's black fire continued to heat up and scorch the coating that it began to melt and deform, emitting white smoke and finally turning into a black gelatinous mass.

What excites Roland most is that the coating is also insulating, and when coated with copper wire, it can be seen as enamelled wire for generations to come, as he proved with the improvised DC generator in the yard.

At this point, Roland has a complete understanding of Zoroa's new abilities.

Unlike Anna's Black Fire, which surpassed Green Flame in all aspects, her evolved ability is more like an extension of her previous drawing ability, and now she can draw both realistic "oil paintings" and thin "photo paintings" from before, depending on what she has in mind, and the two abilities can be used in parallel.

In addition, when drawing a thick scroll, if the thickness is controlled to be less than one centimeter, Zoroa can draw for almost several hours. Once it exceeds three centimeters, the mana consumption will increase rapidly, and after ten centimeters, it will reach a threshold, and almost all the mana in the body will only be enough to draw one or two strokes. Of course, from another point of view, this is also the fastest and most effective way to vent when facing a magic phage.

It is still a summoning ability, and within the radius of the Punishment Stone, the Magic Pen will suddenly disappear, and Zoroa will no longer be able to draw new patterns. However, the coating that had been drawn was not affected by the Punishment Stone, and there was no trace of magic left on it under the Nightingale's observation - in other words, the substance generated by the Magic Pen was real.

As for the use of the coating...... That's too much. Soroya herself would never have imagined how much of a difference her new abilities could bring to the town, which meant that Roland could quickly get his hands on a batch of water pipes coated with rust-resistant materials, as well as large bundles of enameled wire, and even heat-resistant fireproof bricks. The three-way project (water, electricity, and roads), which originally seemed unattainable, suddenly saw the light of day.

At the same time, it also reminded him that the knowledge of personal experience is far deeper than the axioms in books.

If witches could see the microscopic world more intuitively, wouldn't it accelerate their acceptance of particle theory, which would lead to a new round ......of evolution? A microscope that can observe cell structures and microorganisms.

Roland felt the need to give it a try.

North slope furnace group.

"Blah the wind, let the fire burn a little harder!" shouted Losya.

Although I couldn't see the scene in the shaft furnace, the iron and stone inside should have burned red as the three carts of charcoal were poured in.

When he was summoned to the frontier town by a letter from Carl Van Burt, he thought it was a remote and barren place, and if it weren't for the fact that the Masons might be able to regain their life here, he would not want to go beyond the borders of the kingdom to resume his old business.

After leaving his family for a while, he packed his luggage and set off, he was ready to drink gruel and live in a tent.

Nor did Losia plan to stay in the frontier town for long, and he was satisfied with Carl's long-time acquaintance, and the exiled or secluded fellow of the Masons Society.

But the reality is always so incredible.

Arriving in town by boat, he met Carl Van Burt at the docks, a prominent stonemason in the capital of the Grey Keep and a strong contender for the next leader of the guild. Compared with the appearance in his memory, he has gray hair on his sideburns and a few more wrinkles on his face, but his body is not emaciated, but he is much stronger, and his face is even shiny.

After some pleasantries, Karl did not take him to the noisy and messy construction site, but led him to an obviously newly built residential building, handed him a key and said, "This room is yours, put your luggage first, let's go to the tavern for a drink." ”

...... Then Losia heard a series of incredible stories from the other party.

As a commoner, Karl was recruited into the city hall by the lord and became an official with a fixed monthly salary, and he was also the head of the construction department!

If you stay, you can also work at the town hall!

Get a house for free!

After 10 years of service, you can get a retirement allowance! What is a retirement allowance? You can get money even if you don't work!

Losia thought Carl was drunk at the time, but he didn't expect it...... What he said was true.

"My lord, the ore is melting, and I see molten iron flowing!" shouted the worker at the top of the furnace.

"Open the slag outlet and discharge the slag!"

After putting into work, none of the problems that Losiya envisioned appeared, and not only did he ask for people to give money, but he also gave them very quickly, often after making an application, and getting an answer the next day. In addition, there is also an alchemical material called cement, which can quickly bond masonry and stone, so that the construction speed has increased by leaps and bounds, and he feels an unprecedented pleasure here.

In just one month, Losia built five furnaces with air blows and three shaft furnaces for ironmaking.

The shaft furnace in front of him is the work that he has been thinking about for many years after leaving the stonemasons' meeting, and is the culmination of his previous experience.

The improved shaft furnace is nearly two meters high and has an inner diameter of about 75 centimeters. The lower part of the furnace body is equipped with a plurality of nozzles, which can be used for air blowing and exhaust, and the bottom is left with a slag discharge port and a molten iron outlet. There is also a soil slope built with sand and gravel next to the shaft furnace, which is convenient for workers to add materials and observe the situation in the furnace.

Today is the day when the first shaft furnace is officially put into use, and before the furnace is opened, a melting test should be done according to the custom.

After intermittently opening the slag outlet more than ten times, and adding two cars of charcoal to the furnace, the inspection was basically declared qualified - the furnace has already sunk to the bottom of molten iron, the slag discharge port is unimpeded, and the temperature can meet the needs of smelting at the moment, so there is no need to continue to waste charcoal to burn. After all, in order to reduce losses, the waste ore in the corner of the yard was used during the initial furnace inspection.

The tap hole was opened to drain the molten iron, and Losia announced that the furnace would be shut down.

......

Two days later, the townsfolk who were cleaning the hearth had dug out several swarthy stones. Under the high temperature baking, the other waste ores have shrunk several times, but these ore pieces have not changed from when they were first thrown in, but the surface is brighter, and the black is like ink.

Losia couldn't tell what kind of ore it was, it was useless, its shape and appearance were really pleasing, it didn't look like useless, but if it was useful, how could it be made into utensils?

Perhaps the well-informed lord knows the answer. (To be continued.) )