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In the next second, when Lin Feng said his thoughts in the live broadcast room, the audience in front of the screen suddenly ignited!

Smelting metal is a big project, how can it be achieved without professional knowledge and equipment?

He was unarmed, only these copper ores, and it was simply impossible to separate the crude metals by pyrometallurgy!

Seeing that the audience was stunned, Lin Feng smiled mysteriously and said slowly to the camera: "Smelting metal seems difficult, but it is not as complicated as you think, and it can even be said that it is very simple!"

The words fell, and the audience in the live broadcast room complained again!

Some people look forward to it, but most people are still full of doubts about this move.

"Kaede Taunt*1!"

"Rub, Master Feng, bragging still has to go through the process, smelting copper with bare hands, how is this possible?"

"Sit back and wait for the anchor to be slapped in the face!"

"666, the idea is indeed very good, but in the field, without special equipment, even if it is natural elemental copper, it is impossible to smelt it successfully!"

"Awesome!

Looking at the barrage, Lin Feng didn't make a sound for a long time, but asked rhetorically: "In the primitive society, our ancestors also didn't have smelting tools, didn't they also enter the Bronze Age?"

"No, we can create!"

At this time, many viewers asked: "Master Feng, how did primitive people learn to smelt copper?"

"Learning to burn pottery, this is understandable! The mud falls into the fire and hardens, but when it comes to smelting metal, nature has no chance for humans to experience the chemical phenomenon of ore melting at high temperatures!"

Lin Feng organized his language a little and slowly explained:

In fact, it is not difficult to understand, we can imagine the steps of the ancients from the copper-free age to the bronze age, first there was fire, and then they would build an earthen furnace and learn to use charcoal, which is a prerequisite. ”

"The second is to learn to burn clay containers with fire, and use charcoal to heat and melt the ore to make some decorations or small containers. ”

"Finally, because of the emergence of centralized regimes that controlled larger regions and populations, there was a certain use of manpower, and large-scale production began in earnest. ”

"As for how copper was discovered, I think it is very likely that it was a chance that human beings intentionally or unintentionally threw a small piece of copper ore into the fire, and then found that the ore can actually reduce the harder metal, and this metal is sharper than stone tools, so they began to smelt elemental copper on a large scale. ”

"Later, they felt that the elemental copper was not powerful, so they added a small amount of tin and turned it into a copper alloy, that is, bronze!"

In an instant, a dynastic history of human development was explained by Lin Feng lightly, and the audience admired it.

"6666, Encyclopedia Maple is online!"

"The anchor knows a lot, Niu Break!"

"Such a powerful popular science, brothers, the gift goes a wave!"

"Mr. Wang, an enthusiastic citizen, presented 999 bugs to the anchor—— I like to listen to Feng Ye's popular science the most, not only interesting, but also interesting! It's so interesting!"

"May Heaven have no plug-ins to give the anchor 10 shelters —— Wilderness Lecture Hall Distinguished Professor!"

Liu Nian is a first-year high school student who usually likes to watch live shows.

This morning, during the break in the second class, he quietly took out his mobile phone and clicked on Douyu TV, ready to watch the live broadcast to pass the time.

But it's a pity that the two-dimensional beauty anchor who has been paying attention to it didn't start broadcasting, so he browsed it casually on the homepage recommendation.

At this time, a very special name in the live broadcast room suddenly broke into view: "The second season of "Conquest of the Wilderness": 60 days of survival on the desert island, the second day of the North Shore Exploration Plan!"

Desert Island Survival?

Alone?

There is still such a live broadcast?!

With curiosity, he clicked on Lin Feng's live broadcast room and watched it with relish.

At this time, Lin Feng in the picture happened to be fighting wits and courage with the natives.

Seeing this, Liu Nian was immediately attracted!

Then, as the live broadcast progressed, various blockbuster-like plots were staged one after another!

Jungle parkour, primitive weapon confrontation, trap escape, slingling counterattack and other bloody and exciting pictures quickly attracted his attention.

The most important thing is that the picture quality of this live broadcast room is really powerful, he can't stop seeing it, he has already been in it, and he didn't even hear the bell ringing in class.

This class is a history class, and the teacher is explaining the development of the Bronze Age.

Under the podium, when Liu Nian saw that Lin Feng was going to smelt copper with his bare hands, he suddenly couldn't hold back, and said excitedly: ", it's really awesome! Is this about to enter the Bronze Age?"

The next second, the class burst into laughter.

At this time, Liu Nian suddenly reacted.

The history teacher coughed lightly, pushed his glasses, and quipped: "Don't be excited, Liu Nian, I didn't expect you to be so interested in this history?" Okay, after class, come to my office, let's have a good discussion." ”

……

In the canyon.

Lin Feng probably picked up a dozen pieces of brass ore that were not bad, threw them all into the bamboo basket, and continued to look for a new target.

At this time, the drone flew into the air and photographed the surrounding scenery.

The fractured rock face, strangely jagged like a knife, was covered with wet moss and weeds.

There is little vegetation.

The valley floor, gravel everywhere.

Judging by the thickness and color of the rock formations, there are at least tens of thousands of tons of copper ore reserves here.

This number is still quite staggering, and it is rare for a small island in the Pacific Ocean to have such rich mineral resources.

The canyon winds all the way and can only accommodate two people walking side by side.

A glimmer of sky overhead, with occasional seabirds flying by, desolate and mysterious.

This strange and steep terrain is on a par with Mexico's famous "Copper Valley".

After collecting some more ore, Lin Feng began to follow the bottom of the gorge, all the way to the west.

As he was hurrying, he said as he went:

"Ladies and gentlemen, the copper ore reserves here are quite rich and varied, brass, red copper, copper and tin, almost all of them are distributed. ”

"Copper ore is widely distributed all over the world, it is not difficult to find, the color is very recognizable, and as an early pigment and ornament, the Eurodians should have been very familiar with copper ore for a long time. ”

"Remember the petroglyphs we found on the stone staircase, where there were remnants of copper ore. ”

"The earliest area where human beings used bronze was in the Lianghe River Basin, judging from the history of the islands, the history of the use of bronze here should be similar to that of the Lianghe River Basin, all around 4000 BC. ”

"As early as BC, the island of Eurodia was inhabited......"

If it is really as Lin Feng said, the Eurodians are mostly Polynesian branches.

This ethnicity is a transitional type between Caucasian and Asian Americans.

They were a group of people who had already begun to multiply on the islands of the Pacific Ocean long before the advent of the Age of Discovery.

From this point of view, at least the timeline is correct.

Later, it was not until the second half of the Middle Ages, because of the invasion of the colonists and the cannibal flower disaster, that they were forced to choose to live in seclusion, which has remained until today.

As he spoke, the light in the canyon began to dim.

The terrain is undulating.

The valley floor is no longer a gravel formation, but a bumpy rock belt.

It's extremely difficult to walk.

This kind of road condition is not much different from the scorched stone knife mountain in Kilauea, and the sharp gravel is particularly eye-catching.

After walking forward with great difficulty, a strangely shaped stone door suddenly appeared on the rock wall on the left-hand side.

The stone door was closed, about two people high.

Its surface is covered with moss and dead vines, with a slight vicissitudes.

"Guys, there's a stone gate here. ”

After Lin Feng glanced at it, he walked over quickly, observed it carefully for a while, and then said, "I'll try it and see if I can push it away......

As he spoke, he put down the basket, took a lunge, raised his hands against the crack in the door, and began to exert himself.

After a while, the stone gate moved slightly, making a rustling sound.

Hearing the sound, Lin Feng continued to exert his strength.

However, just as the stone door moved more than half an inch inside, it came to an abrupt halt.

Seeing this, he also stopped pushing and leaned against the door, panting.

"Whew! I'm so tired...... The door shaft should have been blocked by something, it could be a pile of dust, or it could be a dead animal......"

After the words fell, Lin Feng looked inside along the slightly open door.

Inside the door, it was pitch black, and the cold wind gusted.

I don't see why.

It's like a tunnel.

After looking at it for a while, Lin Feng suddenly spoke: "I guess that this is very likely to be a secret passage for transporting supplies. Around the Middle Ages, during the island wars, a large-scale naval battle broke out among some island tribes in the Pacific Ocean. ”

"The specific reason is unknown, it may be to fight for resources and territory, but it may also be related to the invasion of European colonizers, and these secret passages may be related to this war!"

After resting for a while, Lin Feng continued to push the stone gate.

Due to the age, I don't know what is blocking the door behind it.

There was wind in the tunnel, most likely a build-up of sand and dust.

The rocks are constantly eroded into sediment debris, but at the same time the sediments reconsolidate into rocks.

That is, the process is reversible.

After many attempts, it took him half an hour to open a crack that could fit a person through the door.

"Whew, it's not easy...... Well, before I can enter the tunnel, I need to make a torch to check the air quality. ”

"Although there is wind, this does not guarantee that the air environment in the tunnel is safe. ”

"We're going to have to do a little bit more to prepare!"

With that, Lin Feng began to look around.

In the canyon, there are a lot of dry miscellaneous and broken wood, but few wooden sticks.

He searched for most of the circle before he found a dry beech trunk, which was of the right length.

"Torches are a very important tool when exploring in the field, even if you have lighting, don't skip it. Many times, a long-lasting torch will really save your life. ”

"In the wilderness, there are three kinds of torches, according to the fuel, dry twig torches, vegetable oil torches and animal oil torches!"

"When I was surviving at Kilauea, I made a nut string torch, which is a type of vegetable oil torch and is very resistant to burning. ”

"But today, because of the limited materials, we have to make a dry branch torch. ”

As he spoke, Lin Feng had already started to get busy.

He first laid the trunk of the beech wood flat on the ground, then selected small branches of different thicknesses, and used the rattan on the stone gate to wrap some hay and branches all around the main body of the torch.

"One thing to note here, be sure to put the thicker branches on the outermost side and the thinner ones inside to increase the duration of the burn!"

After wrapping the main body of the torch, Lin Feng found a large amount of hay and surrounded it to facilitate ignition.

Because there are copper ore and flint knives, the two collide with each other, and it is very easy to get out of Mars.

"Flint knives and ore are very good materials for ignition, just put them together and beat them ......"

After the words fell, Lin Feng took out the stone knife and kept colliding with the copper ore with the back of the knife.

The camera zoomed in, and the audience looked closely, and sure enough, Mars appeared.

Bang bang bang!

After only three strikes, the sparkling flames ignited the torches.

Then, the fire grew bigger and bigger.

Seeing this, Lin Feng hurriedly blew to support the combustion, and then smiled, raised the torch, and showed it in front of the camera.

"How's it going, brothers?"

"The advantage of the dry branch torch is that the fire is large, which is easy to make, and the disadvantage is that even if the burning time is shorter, because the fuel is a branch, so when winding the main body, you must pay attention to putting the small and easily burning branches in the innermost part and progressing layer by layer. ”

"666, brothers, the long-awaited hole must drill is finally online!"

"If it were me, I wouldn't have thought of making torches, I would have rushed in a long time ago!"

"Dry goods, see dry goods again!"

"This torch is good, you don't need tung oil and kerosene, you can make it anytime and anywhere, it's up~!"

"This wild torch matches the shape of the primitive man Feng Ye, 23333!"

As he spoke, Lin Feng picked up the bamboo basket on his back, put the stone knife and other tools into it, and then held the torch and stepped sideways into the stone gate.

After passing through the crack in the door, the temperature began to plummet.

There was a rotten and cold smell in the air.

It smells very uncomfortable to the nose.

Because of the wind inside, the torches began to flutter, and countless burned branches shook down.

"This often happens when the dry branch torch is burning, and the branch with the spark will fall at any time, so be sure to stay away from your body. ”

As he spoke, Lin Feng placed the torch in front of him and continued to walk towards the depths of the tunnel.

The tunnel is not wide, and is flanked by groomed rock walls.

The gravel road under your feet is quite smooth.

On both sides of the road, there were broken arrowheads, spears, and brass blades, most of which had been completely oxidized.

Lin Feng picked up an arrow and observed it carefully.

"It seems that my guess was correct, and this is most likely the island's passage for supplies, and not a war shelter for them to defend against foreign enemies...... There are a lot of stone tools and bronze blades everywhere on the ground here, and you see, there are a lot of them over there!"

"This kind of ancient war tunnel is very common in Europe and Oceania, and in 2015, German archaeologist Heinrich Kush found a large number of underground tunnels in dozens of Neolithic human settlements in Europe, all of which were left over from the war......"