Charcoal burning is a technical job, and the reality has taught Ding Nuo what it means: it is shallow on paper, and he knows that he has to bow to it. Pen %Fun %Pavilion www.biquge.info Because the kiln was sealed at the wrong time, the charcoal burned into toner.

Ding Nuo looked at the pile of black and useless toner, scratched his head a little embarrassed, and explained to Tao Yu: "What... In the mortal world, I can't use divine power, and charcoal knows how to burn, but I haven't actually operated it. ”

Tao Yu didn't expect that the gods didn't dare to blame him, but instead looked for problems in themselves first. While he was flattered, he was a little puzzled but didn't dare to ask, and squeaked: "God... Forehead... That..."

He could only continue to flicker, and Ding Nuo turned his mind around, came up with a set of words, and said, "I know what you want to ask." In the heavens, I am used to using divine power to solve all problems, so I am a little rusty of mortal technology, I only know the general principle, and the specific operation needs you to help me achieve it. ”

So that's the case, Tao Yu suddenly realized, and hurriedly said: "I understand the gods, and I'm honored to help you." ”

Seeing his sincere expression, Ding Nuo had to feel that ancient people were simple, and then said, "Come on, let's continue." I'm going to teach you a useful way, a comparative test, which is a very useful way. ”

"What is a comparative test? What should I do? ”

Ding Nuo attaches great importance to Tao Yu, and has been instilling advanced scientific methodologies in her in the past few days, and comparative experiments are one of them. He took the clay kiln burning as an example to explain in detail the methods and uses of comparative experiments. Tao Yu's eyes lit up as if a new door had been opened, and he couldn't help but connect the method with the manufacturing work of the past, and inspiration surged like a spring.

On the tenth day of Dingnuo's arrival, after technical improvements, Tao Yu mastered the effective method of carbon production. From then on, the tribe could produce carbon in large quantities, which solved the problem of fuel for refining bronze.

In the process, Ding Nuo once again discovered a good talent, a young man of seventeen or eighteen years old named Tu Liusha, who was in charge of building the earthen kiln. He had a very flexible mind and proposed to build the kiln on a natural terraced slope, so that only one or two clay bricks would be needed to build the kiln. The amount of work required to build a kiln was greatly reduced, and as long as there were enough clay bricks, a man could build a kiln in half a day.

Tu Liusha not only has a flexible brain, but also has a certain imagination for space, and after seeing the composition of the bronze furnace drawn by Ding Nuo, he immediately made a decent model out of clay, which is simply touching.

With his help, Dino was strengthened, and soon a trumpet-shaped furnace was built. From the outside, the furnace looks like a small volcano, but according to the information, this structure creates a chimney effect and raises the temperature inside. As for what the chimney effect is, Ding Nuo glanced at it twice and clicked an X in a daze, comforting himself: In ancient times, there was no need to talk about the principle at all, as long as it could be used.

At the bottom of the volcano there is a clay air intake duct that feeds air through the duct, and the air flow is discharged up the furnace, bringing heat to the top of the furnace. Then Dino called in a few dexterous women to make a blower out of animal skins and fish gelatin. Ding Nuo tested it, and the effect was not bad, and the body of Yuhe's little Lori with small arms and legs could be pulled a few times, which was more labor-saving.

Once the preparations are complete, the charcoal is hammered into small pieces, placed in a furnace, topped with copper ore, and ignited. Then use a blower to supply air to the air duct, and the copper can be smelted out.

The structure of the furnace is simple, and the manpower required is small, and three people in a furnace take turns to blow air and process more than ten catties of copper ore each time. The copper smelted has a lot of impurities, and depending on the quality of the ore, it may need to be smelted several times.

The copper ore found by the tribe is of average quality, and it takes half a day's walk from the Huaxia camp to the location, and it is too inefficient to move the copper ore to the camp for smelting. Therefore, Yuluo decided to build a permanent camp on the location of the copper mine, and smelt the ore on the spot, which was called the Copper Mountain Camp.

Compared with copper, tin is much simpler to handle, with a low melting point and easy purification. The easiest way is to fill the tin in a clay pot and heat it on a stove, and it won't take long for the tin to melt into molten tin.

After obtaining the purified copper and tin, and then according to different proportions, the bronze can be poured.

In the pre-Qin period, after the continuous practice and summary of the Chinese ancestors, six formula ratios of bronze were explored: making bells, five parts of copper and one tin ore. To make an axe, four parts copper and one part tin ore, which is also the toughest proportion. To make the halberd, three parts copper and one part tin. To make swords, two parts copper and one part tin. Arrowheads, three parts copper and two parts tin. Half of copper and half tin, which can be used to make bronze mirrors.

The bronze formula is called "Six Qi", and in ancient times, the "Six Qi" bronze formula was like the secret book of the various sects in the rivers and lakes, and the jade snail kept the formula in the most secret place, and the craftsmen involved in the preparation of the ore ratio were firmly controlled by her.

The entire bronze refining process required a lot of labor, and the tribe had a large family background and a large population, so Yuluo was able to easily gather enough labor to put it into the production of bronzes.

Bronze production increased rapidly, and bronze weapons began to be put into service. According to the Tiger Hunting Wolf's request, the first ones to be made were bronze spear tips and arrowheads, and when he obtained the first batch of bronze weapons, he raised his head with excitement and roared, and the morale of the warriors was boosted.

With the expansion of bronze production, a part of the bronze was used to make tools, and under the guidance of Dinno, the artifact saw of ancient times was born.

Bronze saws and axes sped up the tribe's ability to cut down trees, which had previously been impossible for the tribe to cut down large trees, except for small trees unless they burned them. The forests on the wild planet are like an impenetrable barrier, dividing people, and it is almost impossible for humans to transform the world without bronze tools.

With the bronze tools, Yuluo keenly recognized the importance of roads, and proposed cutting down forests at tribal meetings to connect all settlements in Huaxia territory. At that time, Ding Nuo was simply stunned, and if he wanted to get rich, he would build roads first, but he didn't expect a Stone Age tribal leader to have such insight.

Two months later, the main force of the tribe preliminarily completed the replacement of bronze weapons, and the tiger hunter could hardly suppress the impulse, so he wanted to find the enemy in the east to fight well. But the strange thing is that the Flower Tribe has not moved in the past two months, and not even a tentative attack has occurred.

Sensing the enemy's anomaly, the Tiger Hunter Wolf sent additional men to monitor all the mountain roads near Dongdaemun in case of a surprise attack. And send the best hunters to infiltrate the Flower Tribe and see to find out their purpose.

Jiao Heng was one of the spies sent by the Tiger Hunter Wolf, he was dressed in animal skins, and his bare parts were covered with green plant juice, and he slowly walked along the mountain path carefully. It has been three days, marching during the day, sleeping in trees wrapped in withered grass and animal skins at night, and finally arriving at the destination - the Flower Tribe, after several dangers.

He thought about it for a moment, climbed to the tallest tree nearby, hid in the leaves, looked out at the bustling tribe in the distance, and was stunned... He had never seen such a spectacular scene in the sight of a large blue lake with no edge in sight. After that, he suddenly woke up and began to look around, looking for valuable information. The boat on the Great Lake caught his attention, it was too big.

The Huaxia tribe also had boats, but they were like babies compared to their boats. There were six large boats on the lake, and they were anchored on the shore, and suddenly many soldiers came down from one of the boats. This scene broke through the fog like lightning...

Jiao Heng grinned, found the information, and then slid down the trunk of the tree to the ground, dived into the grass and trees, and soon disappeared.