On the way, based on his previous experience in copper mining, Tang Jingtian described to Li Yi the morphology and distribution characteristics of copper deposits.

In general, copper-rich ore is bare on the surface of the rock, and after years of solar and wind erosion, it takes on a purple-brown form, and it will inevitably be distributed with other kinds of bright stones, and the rock structure is like a layer of mille-feuille.

As long as you pay attention, it is actually very easy to spot.

However, low-grade copper ore is difficult to find, and most of them are buried underground and cannot be found with the naked eye alone.

Therefore, in this era, due to technical reasons, most of the rich copper ores that can be mined are easy to identify.

When the copper-rich ore is mined, what will be left for future generations is the low-grade copper ore buried in the ground.

After listening to his introduction, Li Yi has some understanding of copper ore knowledge.

With such a remarkable appearance, it seems to be easy to find, but once he went deep into the forest area, Li Yi was completely dumbfounded.

Although there is a general location of the Dongchuan copper mine and a description of the appearance of the so-called copper mine, it is not easy to find them in this lofty mountain range within a radius of dozens of miles.

Under the guidance of the guide, the group crossed several mountain bags, and after walking through the dense forest for more than half an hour, they soon came to a gentle hilly area.

In this deserted place, more than 30 people, like headless flies, circled around this roughly determined location several times, and found no trace of the copper mine, let alone the location of the copper mine.

It was close to noon when I saw it, and the scorching sun was hanging overhead, making everyone a little drowsy.

Li Yi ordered everyone to find a shady place to rest on the spot, so that they could eat some dry food and drink some water to replenish their strength. Also let the war horse rest.

At this time, Lian Jun and several other soldiers had gone to the mountain stream to fetch water.

Li Yi and the Tang brothers sat on the edge of the dense forest, eating dry food and chatting about family life.

Although they still never mentioned their martial arts, they also deepened their understanding of each other through conversations.

Their frankness and straightforwardness made Li Yi feel more favorable to their brothers.

When he was chatting energetically, suddenly, Li Yi only felt a strong wind sounding, and when he didn't know why, Tang Jingtian's body shook, and between the lightning and stone fire, his five fingers were open, and he had firmly grasped a powerful feather arrow shaft, turned sideways, and then threw it out casually.

Li Yi was in a panic, and before he could stand up, he only heard an 'oops' sound from the opposite hillside.

Then, I saw a man dressed in black, roll out of the bushes in embarrassment, stumble down the hillside, and soon escaped from everyone's sight.

Tang Jingshi didn't say a word, and jumped on the spot, like an arrow from the string, and quickly chased down the hillside.

Tang Jingtian was not lazy, waved his hand to Li Yi, and also turned around and rushed down.

When Li Yi was considering whether to follow, the surrounding soldiers had already gathered when they heard the sound, and quickly arranged a human wall around him, blocking Li Yi tightly.

Unexpectedly, only a moment later, the Tang brothers returned to the same place one after another.

The boss Tang Jingtian said with a solemn face: "Dashuai, just now this person has already gone to the village below, looking at his outfit, it seems to be the place of the black barbarians." ”

"This place is stocked one after another, and I am afraid that it is a settlement of black barbarians. Now the situation is unclear, for the sake of the safety of the big guys, let's take a detour, don't provoke them easily. ”

The guide also said that the following is the territory of the Mengluo and Somyanse tribes, these people are fierce and brave, and have always disobeyed the jurisdiction of the local government, even the former Sun De CD did not dare to provoke them, and the Han people would not come to this place normally.

Li Yi nodded and said, "It's okay, we came to look for mines, and we can't offend the black barbarians." The man shot an arrow, presumably to warn us not to go near their territory. ”

"There's no need for us to clash with them, let's go somewhere else."

At this time, Lian Jun and others also came back from fetching water, and the audience was also taken aback when they told the scene just now, and they were relieved to see that Li Yi's good oily skin was not injured.

In order to avoid trouble, Li Yi was about to arrange for everyone to go out through the dense forest and from another place.

Unexpectedly, there was a sudden shout of people at the bottom of the mountain, and then I saw hundreds of dark-faced natives, who rushed over.

Dressed in colourful costumes and armed with shining pikes, scimitars, bows and arrows, these men appeared on the hillside with a gruntle in their voices.

It seems that 'it is a disaster that cannot be avoided', and without waiting for Li Yi to pass on the order, everyone drew their waist knives and crossbows, and prepared for battle.

In the face of the hundreds of black barbarians, although Li Yi was a little nervous, he still maintained a calm demeanor and watched the next move of these black barbarians.

At this time, the approaching black barbarians were already only a few dozen meters away from Li Yi and them.

After a whistle, they seemed to have heard the order, and they all stopped, looking at Li Yi and the others with hostile eyes.

Lian Jun stood in front of Li Yi and quietly instructed everyone not to make a casual move, and wait for them to get closer.

And the Tang brothers stood on Li Yi's left and right, looking at each other calmly, looking like they were bamboos in their chests, which made Li Yi feel a lot more relieved.

The two sides confronted each other for a while, and out of the crowd came a middle-aged man with pheasant feathers on his head and a black embroidered short coat with a straight placket, but his face did not look like a member of their own clan.

He took a few steps forward, and shouted to Li Yi and his party in official dialect at the top of his voice: "Listen to the people on the other side, this is the territory of our Liuyi people, where are you barbarians, why did you hurt our people." ”

Hearing this, Li Yi couldn't help but feel a little ridiculous, just now the indiscriminate secret arrows hurt people, obviously they are barbarians, but they put the blame on us, you must know that these places are all the territory of Yunnan!

At this time, Lian Jun glanced back at Li Yi, and after getting his nod, he immediately shouted loudly to the other party: "Listen to the people on the other side, we are the personal soldiers of the Xuanfu Embassy of the Han Dynasty, and the commander of the guard is patrolling here." If you dare to hurt someone with a secret arrow, if you accidentally injure the commander, can you bear the responsibility? ”

The middle-aged man on the opposite side listened to Lian Jun's words, his face instantly became extremely nervous, and he hurriedly returned to the team and muttered, and then there was a commotion in their crowd.

After a long while, the middle-aged man walked out of the crowd again, raised his hands high, and slowly walked towards Li Yi's side, looking like he was going to come over to negotiate.

Li Yi warned everyone not to make a rash move, and waited for him to come over and ask about the situation.