[Spade] was the first bronze ware that Li Hao thought of to refine.

It's not that it was the first invention in ancient China, so it should be given priority to forging.

Rather, it is because, whether it is the construction of rammed earth walls or the cultivation of wasteland, the shovel is an indispensable tool for labor.

Although, in the previous life, it was customary to use shovels, but copper shovels are the same.

However, copper alone will definitely not work, pure copper is too soft, and if you want to make a spade, you must use hard bronze.

Li Hao went to the basket to pick up the ore that everyone picked up, and with the help of the technology tree, he quickly found some tin ore.

The melting point of tin is lower than that of copper, and it is thrown into the blast furnace, "booming ......", and some black and shiny tin lumps are quickly refined.

Then, according to the ratio of 10 to 1, 10 parts of copper and 1 part of tin were smelted together.

The 10% tin content is the secret recipe for the balance of bronze's firmness and flexibility, and Li Hao also invited several beer waists before he learned the forging technique of his hands from a master.

"Add fire, blow hard!"

Although Da Niu couldn't understand Li Hao's operation, he was not stupid, Li Hao glanced over, and he knew that what he was going to refine next must be more important than the previous jaundice, so he immediately ordered to urge.

As for how to eat these smelted jaunds, he still hasn't figured it out.

Other clansmen also secretly put them in their mouths to bite, almost knocking out their teeth, and they couldn't eat a bite.

Therefore, Lenovo Patriarch's teaching before he set off that he could eat enough every day by picking up stones, Da Niu guessed that maybe after the fire stopped this time, the hard bumps that came out again should be able to eat.

"Don't stop, everyone, blow the wind hard!"

The flames in the blast furnace rose and rumbled. Li Hao and everyone else were also eager and excited to wait.

It's just something that everyone is excited about, and it may be a little different.

Not long after, the bronze solution slowly flowed out and entered the crucible, Li Hao was overjoyed, and hurriedly poured it into the clay mold that had been prepared long ago to set the shape.

"Wow ......"

The clear stream water was poured in, and the bronze inside quickly solidified.

Then smash the clay mold, and a pointed bronze shovel that is very similar to the previous life will be hot.

"Look carefully at my polishing!"

Seeing that the big bull was drooling and leaning over, Li Hao was a little confused, but he didn't pay much attention to them, he took care of himself, and the corners of his mouth rose with some pride, "This is a bronze spade, a long stick should be inserted in the back to make a spade handle, and the front spade head should be polished quickly!" ”

"Sneer......"

After taking a prepared whetstone, Li Hao was not too dirty, and sat directly on the ground, carefully polishing the shovel head, and demonstrating it to the big bulls.

"Huh? I see! ”

Da Niu and the others looked at each other, and hurriedly picked up the copper lump that had been refined before, and also found a stone to grind.

"Click......"

"Mmmm, that's good, it's just grinding, it's going to be smoothed, sharpened."

But soon Li Hao found out that something was wrong, how did they stuff it into their mouths while grinding, and after biting a few bites, they couldn't move and took it out and continued grinding.

What's going on?

"Big Niu, why are you biting copper?"

"Patriarch, didn't you say this thing can be eaten? Are we still grinding soft enough? Why can't I bite it until now! ”

"I ......"

Is this everything edible?

It seems that before he came, he made a speech at the mobilization meeting, which made everyone misunderstand.

In fact, he did not mean that the stones he picked up could be eaten, but that tools made of stones could make edible food.

Not to mention, for this group of primitive people who have never been in contact with agricultural civilization, this truth is really a bit twisted.

"This is called a bronze shovel, and it is used for digging soil, so it cannot be eaten."

"As for the thing I said before that we can eat every day by picking up stones here, we need to make this bronze shovel first, and then dig the soil and cultivate it...... to be able to eat. ”

Li Hao stared at the eyes of everyone, and when he saw that their eyes were confused, he explained more, and after talking and comparing for a while, the big bull and others who had a flexible brain finally nodded.

"Oh, I see, this bronze shovel can't be eaten."

Hearing Da Niu and a few soldiers say this, Li Hao let out a long breath and nodded again and again, "Yes, yes, everyone finally understands!" ”

"Mmmm, we all understand the patriarch, this thing is used to dig something out of the soil to eat."

Forehead! Li Hao held his forehead and was speechless for a long time.

Without much explanation, no matter how much explanation is given, it is useless not to let this group of primitive people see the actual effect.

The opening of a new civilization cannot be something he can do in a few words.

Take your time!

After a complete bronze shovel was made, Li Hao began to guide Da Niu and them to refine the bronze shovel, this thing is in large demand in the tribe, and he still has a lot to do, so it is the best choice to take a few apprentices to help him refine it.

Besides, it is difficult for people who don't understand this thing, but with the guidance of a famous teacher like him, it is not difficult to learn to draw a scoop according to the gourd.

With patience, he taught Da Niu and a few nimble young warriors by hand, and after smelting a few furnaces, they were already able to get started, complete the refining and polishing of a bronze shovel, and load the finished product.

"Good!"

After teaching his apprentices, Li Hao can not only pull out his hands and do other things, but also increase his technology points, each bronze shovel has 100 technology points to increase, which is not cool.

In addition, before picking up ores, pinching blast furnaces and other technology point rewards, Li Hao has already had a point income of nearly 5,000, a record high.

Moreover, with the continuous picking of ores and the continuous success of bronze shovels, the points are still rising.

"Good!"

In the future, bronze pickaxes, bronze hoes, bronze saw blades, etc., bronze weapons will also be forged, and bronze bugs will continue to be stuck, adding a large number of points.

The future is promising!

Seeing that Da Niu and a few others have learned, Li Hao has gained another wave of science and technology points, and he is happy!

A few more stones were picked out, and everyone was asked to compare the stones they had picked up with these ore samples that he had specially picked.

If there is similarity, keep it, and if there is no similarity, throw it away.

Although the speed of picking will be very slow at the beginning, as long as we stick to this method, Li Hao believes that everyone will soon be able to master the preliminary screening of ores.

After doing these things, Li Hao sat under a big tree to rest, from the beginning of the day to now, he had to lead decision-making, and he had to do it himself, he was really tired.

However, looking at the sun rising high, I frowned slightly, time passed too fast, why was it noon in the blink of an eye?

"Tech Tree, Farming Technology Upgrade!"

Li Hao didn't want to delay, he wanted to point out the advanced farming technology he needed today, and directly upgrade it.

"Level 1 Raw Collection,...... Level 2, Level 3. Level 1 Fishing and Hunting ...... Level 2, Level 3. Level 1 Nomad ,...... Level 2, Level 3.

Bite! [Slash and burn] Level 1. ”

After using up all the thousands of technology points, Li Hao barely upgraded to level 1 slash-and-burn.

Slash-and-burn farming is also called migration agriculture, and in some places it is called "guerrilla farming".

It is one of the oldest and most primitive forms of agricultural farming.

This method of farming did not have a fixed farmland, and in order to cultivate the land, the ancient ancestors had to first open up the wasteland, cut down the trees, and burn the vegetation on them with fire.

In the dense primeval forest, a piece of land is cleared, and then a small pit is dug with a wooden shovel and a wooden hoe, a few seeds are put in, and then buried with the soil, relying on natural fertility to obtain a grain harvest.

When the fertility of this land decreases, it is abandoned and another piece is developed, so it is called migration agriculture.

This kind of farming method is extremely primitive and long in the history of human development, but it is an extremely important small step for human beings to enter a higher civilization.

Li Hao respects this small step very much, but he doesn't like to take this step again, he wants to directly cross the primitive, step onto the [intensive cultivation], and build the broad road of the city fortress.