Aztec Eternals

Although Etalik was old, his footsteps were light and powerful, and his speed was like the wind. His steps are precise, his hands and feet are coordinated, and his legs are loose. While walking, the old warrior uses his hips to lead his legs, the center of gravity is only slightly undulating, and the leisurely charm is born naturally.

Seeing this, Bertard's eyes were fixed, and his feet exerted force, running like a tiger. He strides alternately, with a jumping feeling that is about to come out, and the rhythm of tigers and leopards in coordination.

Xiulot is in good shape. Although he can't compare with the two veteran warriors who have been tempered and tempered, he has completely mastered the running skills of the warriors. As the boy walks, his muscles are integrated into one body, and the four standards of flexibility, speed, balance, and explosiveness have entered the room, and he is always ready for fighting.

In this era of long-range weakness and insufficient lethality of stone tools, personal force has been displayed to the greatest extent. The warrior's training is counted in ten years, and he can firmly suppress the militia several times, so he naturally goes a long way in the exploration of physical strengthening. The unparalleled fierce general controlled his pace and could kill seven in and seven out in a scattered formation, while the stone spears of the militiamen were no threat.

However, the charcoal in front of Xiulot, together with sulfur and soil salt, ended the era of fierce generals ahead of time!

The use of charcoal in Mesoamerica dates back to the Teotihuacan civilization. In the banquet in the mural, the ancestors grilled venison over charcoal. For teenagers, charcoal firing technology is an important cornerstone of civilization. Charcoal can be used to make pens and inks for painting, absorb moisture to forecast the weather, and purify air and smoke.

And most importantly, charcoal can be used as a high-temperature fuel, participating in the configuration of gunpowder and the forging of metals!

Although charcoal was invented very early, in fact, under different production methods, the quality and productivity of charcoal vary greatly.

The essence of charcoal is carbonized porous wood produced by incomplete combustion or pyrolysis. It is flammable, smokeless, has a high calorific value, and has an extremely low water content. The quality of charcoal is reflected in the unit calorific value, which depends on the temperature conditions during carbonization. The higher the carbonization temperature, the greater the unit calorific value of charcoal, and the better the quality. The productivity of charcoal is the efficiency with which a fixed weight of wood is converted into charcoal.

In Schlott's memory, the power of black powder lies in the exothermic oxidation and gas release in the reaction. The rapidly increasing temperature heats the large amount of released gas, and the volume of the gas increases exponentially, producing a violently expanding explosion. Therefore, the better the quality of the charcoal and the higher the burning temperature it brings, the more powerful the black powder will be.

In metal forging, the biggest limitation of classical technology is insufficient temperature. When the gray cast iron water is below 1500 degrees, the performance of the cast iron will be improved as the temperature increases. Due to the addition of carbon, the initial forging temperature of forged steel is 200-300 degrees lower than the optimum temperature of cast iron, generally around 1200 degrees, and then the final forging temperature gradually decreases to about 800 degrees.

In order to achieve such a high temperature of more than 1,000 degrees, in addition to designing a blast furnace, excellent charcoal or coal coke with high calorific value is essential.

In other words, charcoal, a high-heat fuel, acts on bronze, iron, gunpowder and even the industrial age at the same time, and is an indispensable source of power for the development of civilization!

Shulot stood in front of the mound of charcoal with green smoke curling up, facing the knelt charcoal-burning craftsman, meditating silently.

Seeing His Royal Highness calmly, the leader of the charcoal worker at the front took two steps on his knees and bowed his head to the ground.

"Your Highness, God of Fire is blessed! We have just finished burning two piles of charcoal, please check it out."

Hearing this, Xiu Luote looked up, and in front of him was a black mud pile, shaped like a "grave mound", less than one meter high and about two meters in diameter at the bottom.

Several gaps have been cracked on the surface of the mud pile, but the charcoal workers used new mud to smear it, and the color is lighter. There are several ventilation holes at the bottom of the mud pile, which presumably are channels for oxygen, and they have all been blocked at this time. On the top of the pile of mud, there is a two-palm-sized crater, which has not been completely blocked at this time. The curling blue smoke came out from the "grave mound". To the young man, it looked like a good omen in the legend of the Celestial Dynasty.

Shulot looked to the side again, and another pile of charcoal had already been burned and cooled.

The leader of the charcoal workers with a dusty face urged in a low voice, and the charcoal workers stepped forward together, pushed aside the mud pile, and took out large handfuls of black charcoal from it. Then the leader of the charcoal worker picked and picked a few pieces of good charcoal with a glossy surface and hard black from the middle and upper floors, held them in his arms, and handed them to His Highness as a gift.

"Your Highness, look, this is the best quality charcoal! It is hard, black and shiny, and it burns hot and fiercely. You can touch two pieces to make sure it is crisp and pleasant!"

The charcoal was related to military and national affairs, so Xiu Luote directly reached out and took two pieces, and put them against his ears to listen. His palms were quickly blackened, and the familiar smell of charcoal was inhaled into his nose, and there were indeed some crisp bangs in his ears. A long memory appeared in the boy's heart, and he nodded slightly.

Immediately, Xiulot took two steps forward, and under the surprised eyes of the charcoal workers, he squatted in front of the charcoal pile and checked the shape of the mud pile. Then, he took out two pieces of charcoal from the bottom, the tentacles were slightly soft, and there was no black light on the outside. The face of the leader of the charcoal worker changed instantly. The boy bumped the charcoal next to his ear again, and the sound was muffled, which was probably due to insufficient heat and poor quality.

Xiulot took a step back and stood in front of the charcoal pile, groaning silently. The leader of the charcoal worker stood by, carefully explaining the specific process of burning charcoal.

Obviously, the charcoal burning process used by the charcoal workers is the most primitive method of composting, which is about the same technical level as the tribes in the black African continent. First insert a wooden stake in the middle of the open space as a pillar, then pile up the vertical firewood on both sides, then wrap the leaves on the firewood pile, paste it with wet mud, and leave the vents and craters.

When the top burner is ignited, oxygen flows in from the bottom vent, and the flame burns from the top down and against the flow of oxygen. The charcoal workers use the amount of ventilation to control the size of the flame, and block the vents when they are burned. After the vents are blocked, the fire ports are blocked until the smoke comes out, and then they can cool down and wait for the "furnace" to be turned on.

After listening, Xiulot simulated the specific combustion process in his mind. Generally speaking, the charcoal near the burner should be over-burned, the quality in the middle is the best, and the charcoal at the vent should be under-burned.

After a while, he looked at the anxious leader of the charcoal worker and asked a question calmly.

"What is the output of this pile of charcoal? Can the high-quality charcoal be half?"

The leader of the charcoal worker was slightly taken aback. Immediately, he quickly ordered the craftsmen to weigh on a simple large balance. He glanced left and right, and while His Highness was not paying attention, he kicked a few stones into the charcoal of the big balance. After a while, the leader of the charcoal workers replied respectfully.

"Your Highness, eighty parts of wood can burn fifteen parts of charcoal."

Xiulot mentally calculated for a few seconds, divided 15 by 80, and it was about 19%, which is a deceitful binary system. This efficiency was much lower than he remembered.

"Is it dry wood?" the boy asked.

The leader of the charcoal worker nodded, of course it was dry wood, and there was only a little bit of raw wood after burning.

"How much of the high-quality charcoal you picked out just now?"

In Xiulot's view, only that kind of high-quality charcoal is suitable for making charcoal powder for gunpowder. Soil nitrate is not easy to produce, the output is limited, and the purity cannot be guaranteed. If the quality of charcoal powder is not good enough, the power of gunpowder can be imagined.

"Five no, seven." The leader of the charcoal worker gritted his teeth and said.

Well, five servings. Xiulot nodded knowingly, the first number is credible. Then, he shook his head again, 6-7% of qualified charcoal output. The efficiency of burning charcoal is also too low, and technical improvement must be carried out.

The teenager recalled familiar memories again. His thoughts flew back to the ancient times, to the future of the Celestial Dynasty. Building a kiln to burn charcoal and building a kiln to burn bricks, these two kinds of earth method buildings are memories of the past in the countryside, just a glimpse in his childhood fantasy.

Shulot fell into long and difficult thoughts. Bertard had already prepared and sent charcoal pencils and large wooden boards from local materials. Etalik showed joy, sat cross-legged on the hot mud pile, and watched His Highness's "divine revelation".

Shulot had nothing else to do. He first drew an enlarged version of the kiln, doubling the size and changing the shape to a square. Finally, it is four meters long, two meters wide and two meters high. The teenager roughly calculated, 16 cubic meters, it is estimated that 2-3 tons of dry wood can be put in. Thinking of the difficulty of logging in this era, he shook his head again, and changed the size to 2 meters long, 1 meter wide and 1 meter high, to test the specific design effect.

Next, referring to vents and burners, Schlott recalls two key words: flue and fire.

The young man first drew a fire channel on the bottom of the kiln in both length and width, and then painted another one, leaving only a two-meter-long fire channel along the center of the long surface. The fire path connects both ends, and its function is similar to that of the burner. It is used to insert dry wood to ignite the fire, so as to burn wood into charcoal.

He was not sure about the width and height of the fire path, but he only estimated the width and height of two palms. Then, he thought about it again, the flame should be from the ignition point, from the bottom to the top, so the ignition port of the fire path should be lower than the end, how much lower? Well, two palms too.

Next is the flue. According to the juvenile's analysis, the flue should be opened in the surrounding soil on the outer wall. The temperature at the upper end of the flame is the highest, and the wood in the kiln should be charred from top to bottom, so the flue is reversed, from bottom to top, with the opening at the bottom, and the width is about two palms. Then, the smoke goes up from the bottom along the flue in the outer wall, and escapes from the top smoke hole, which is narrow at the top and wide at the bottom, which is convenient for sealing the hole at the top. Well, Smokey Eye is only the size of a palm.

So far, the talent and learning in Shulot's stomach has been exhausted. He thought about it for a while with a serious expression, and he lit the fire to smoke, logically no problem.

Continuing to think, he marked a few pictures of smoke: thick smoke, add wood and fire; green smoke, seal the fire; full of green smoke, turn off the fire to cool down. In fact, these are the secrets of watching smoke that the leader of the charcoal worker just told him. Finally, the young man drew the shape of the vertical firewood, and let the charcoal workers figure out how to place it.

The warriors and craftsmen waited quietly around, in awe. After a while, His Highness finally finished the enlightenment.

Xiu Luote waved to the leader of the charcoal worker, who approached respectfully with a smile.

"your name?"

"Honorable Highness, I am Koskaqi from the city in the lake."

Koskazi's face was covered with dust, and his age could not be seen, only a bright smile could be seen. His voice was deep and hoarse, probably caused by long-term smoking.

Xiuluo nodded. He was a charcoal worker who was neglected by the alliance. He was born as a commoner.

"Koskaci, I entrust you with a military mission!"

Hearing that it was a military mission, Koskaci shuddered. He lowered his head to cover up, his face turning bitter.

"Look up, look here! This board is a new type of charcoal kiln designed by me. You should build it according to the shape above, paying special attention to the fire path and flue! As for the specific size and details, I will leave it to you to explore."

Hearing this, Koskazi's eyelids twitched, and His Highness has only been here for an hour, and he gave some new design drawings! I have been doing it for twenty years, and I dare not change it at will!

Xiu Luote looked at the expression of the leader of the charcoal worker, and felt that the other party did not believe in the blueprints he worked so hard to design, so the boy spoke majesticly again.

"Koscachi, the Alliance requires you to build five new charcoal kilns within a week, and then ignite them one by one. The general shape remains the same, and you can adjust the technical details. No matter what method you use, within a month, your charcoal production rate Forty percent of dry wood must be achieved! Excellent charcoal should account for half!

If you meet the standard, I will promote you to be a senior craftsman of God's Enlightenment Institute, and if you exceed the standard, you will be a master craftsman! And one whipping is enough for one share of wood. If it is only 30%, you can kill yourself! "

In Schlott's view, this standard is not strict. The charcoal production rate of charcoal kiln dried wood in later generations can reach 50% and 75%; at this time, the charcoal workers of Daming can also stabilize at about 50%. With his own design guidance that spans the ages, all the leader of the charcoal worker needs to realize is the detailed operation.

Hearing His Highness's strict order, Koskaci's eyelids trembled violently at first, and then his whole body trembled. His Highness ruthlessly stuffed the wooden board with the mission target into his hands, then turned coldly and left, heading for the adjacent brick kiln workshop.

The old warrior Etalik gave Koskazi a fierce and deep smile. Then, he stretched out his powerful hand, patted the shoulder of the leader of the charcoal worker, and lightly brushed the other's fragile neck, and continued to leave with a smile.

Green smoke was still rising from the top of the mud pile, but Koskazi was cold all over. The skin on his neck was scraped by the calluses of his fingers, and goose bumps appeared all over his body.

The leader of the charcoal worker trembled slightly and stood still, like a crow frightened by a kestrel. It wasn't until His Highness and the warriors disappeared that he suddenly turned around and jumped up, yelling at the charcoal workers around him at the top of his lungs.

"You lazy blackbirds! From today onwards, sleep on the kiln! If you can't complete your Highness's goal within a month, I will pluck your feathers first!"

In the sky, a clever crow was attracted by the smoke column on the ground, came happily, hovered over the heads of the lively charcoal workers, and croaked like accompaniment.

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