Sierra Leone's roads are not in very good condition, especially the closer you get to the east, apparently because it is deep in the interior and has not yet received attention and adequate international assistance.

After more than four hours of bumps, Wu Jun and his party came to a dense jungle.

The hot and humid air made Zhao's bald head covered with beads of sweat, and his clothes were soaked with sweat, and large watermarks appeared on his back and chest.

"Isn't it said that Africa is all drought, how can this place be the same as that hellish place in Vietnam?"

"That's just your misunderstanding," Selena explained with a smile, "There are actually a lot of jungles in Africa, and it's the rainy season, and there's a lot of rainfall, so we might have to cross some streams later." ”

Professor Morgan came out of the co-pilot, with an extra map of the local area in his hand, and after using the satellite location to determine the current location, he pointed to the location on the map to the guide they had found.

The guide, who was not a local, began to take a map and go to the surrounding villages to ask.

Ten minutes later, he walked back with a look of trepidation on his face.

After communicating with Tristan in English for a while, Wu Jun noticed that the guide's words became more and more intense, and finally jumped into the truck and left with the driver.

"What's going on?"

"The guide said that the place we were going to had a lot of dangerous things happen in the last two months, so I didn't want to go. ”

Selena's face revealed a hint of schadenfreude and cunning, seeing that she was about to reach the place, and suddenly such a thing happened, as the person in charge of finding the guide, Tristan, should be very sad at this time.

If he hadn't robbed her of the job he was supposed to do yesterday and found a guide and bodyguard in advance, she wouldn't have had an unpleasant conversation with Professor Morgan.

"And what are you going to do now?"

It's best to go home right away, Wu Jun added in his heart.

"Of course we won't give up on this little thing, and a guide is a must," Selena said, "We can go to the nearby villages and find some English speakers to be our temporary guides, and I think the locals will be more familiar with the terrain than the one just now." ”

Not a bad way.

But it's so remote that you can hardly see a normal house, will there be English speakers?

The result greatly surprised Wu Jun, and Selena quickly found one.

This is a girl who looks to be only a teenager, with a relatively thin figure, simple clothes, and torn shoes, but she wears a necklace and earrings, and seems to have makeup on her face.

What Wu Jun didn't know was that because of the influence of Western colonial rule for a long time, the locals had the habit of wearing jewelry and makeup.

Even if you can't open the pot at home, parents should find a way to save a little money and buy some jewelry and cosmetics for their daughters, even if they are the cheapest ones, to make them look beautiful.

"Her name is Naha," Selena said, "and when translated into Chinese, her name means stream." ”

Wu Jun nodded slightly at Naha, but he found that Naha's eyes were staring closely at Zhao Guangwu beside him, and his eyes were full of shyness.

He turned his head to look at Zhao Guangwu, this guy looks even darker today, could it be that this girl thought he was a local and fell in love with him at first sight?

"Lao Zhao," Xiao Liu also discovered this anomaly, leaned into his ear and said, "This little girl is interesting to you!"

"Go, they're only 17 years old. ”

"What does it matter, it's normal for locals to marry at the age of 15," Xiao Liu is worthy of being an old driver, and he has already inquired about the local customs, "And this is polygamy, or you will stay and enjoy happiness in the future?"

Zhao Guangwu glanced at Xiao Liu angrily, is he the kind of person who is inferior to beasts?

Besides, he's just tanned, not really a black buddy!

"Lao Zhao," Wu Jun said with a smile at this time, "You can speak English, you go and inquire with her about the specific situation." ”

Zhao Guangwu glared at Xiao Liu and walked over stubbornly.

In terms of making boyfriends and girlfriends, Wu Jun is much more direct abroad than at home.

Although Naha did not boldly explain her mind to Zhao Guangwu, her burning eyes had already betrayed her heart.

This made him sigh, why can others encounter such a good thing wherever they go, but he doesn't?

Not to mention that no one likes him, like Selena actually doubts his intentions and wants to use the excuse to test his motives after eating.

He didn't even know who to talk to.

After a while, Zhao Guangwu had already asked about the situation clearly.

The place where Professor Morgan is going is a valley.

In fact, it is a very ordinary place, and nearby villagers often go there to graze.

However, two months ago, some sheep in the village disappeared, so they went to the valley to look for them, but only found a few sleek skeletons.

So the villagers thought that some fierce beast must have come to that valley, and from then on, no one walked in it.

Naha's father, along with many of the men in the village, worked in the mines on the far side of the valley.

If they followed the road, they had to take a long detour, so they often crossed that valley to the mines.

Naha had been walking around the valley with her dad a few years ago, so she was very familiar with where it was.

But she only promised to take it to the entrance to the valley, and the inside would not go.

"Master, do you think there really are beasts?" Zhao Guangwu asked a little worriedly, "I knew I would have bought some weapons in Freetown." ”

"Don't worry," Wu Jun said, "just take care of Naha on the way, and I'll take care of the rest." ”

Zhao Guangwu: ...... Master, you did it on purpose, absolutely on purpose!

But Naha is pitiful.

Along the way, Zhao Guangwu chatted with her and learned that Naha had three sisters and two younger brothers in the family, and only his father could make money.

He worked hard to find diamonds in the mines, but he earned 5,000 leones a day, almost a little more than $1.

In addition to the family's expenses, this salary can also have a surplus, so as the eldest child in the family, Naha can learn some knowledge, and she is not fluent in English at school.

However, she is 17 years old this year, and she has reached the age when she should marry, and she hopes to find a strong man like Zhao Guangwu.

This sentence frightened Lao Zhao to retreat, but fortunately, the valley was not too far, and their destination was soon there.

"That's all there is to it," Naha said, "and there will be danger going inside." ”

Professor Morgan looked at the nearby terrain, which was surrounded by trees, but a small stream flowed out of the valley, washing away the mud from the stream, revealing fine gravel.

Naha said that the pebbles were left over from the previous diamond washing, but there were not many diamonds in this valley, and the villagers abandoned the place.

"Let's try it here first. ”

With that, Professor Morgan asked Tristan to begin assembling the equipment, while the two bodyguards walked around the perimeter with guns.

Wu Jun found that Professor Morgan's instrument was a bit rudimentary, a black iron box covered with round jacks, like headphone jacks.

Outside the iron box are two small batteries, which should be its power source.

Tristan inserted black rods evenly on the ground around him at a fixed distance, about 100 of them, and they were divided into a large circle with a diameter of more than 50 meters.

The tail of the black rod was connected to a long wire, which was finally attached to the black iron box.

With this ready, he took out a laptop from his backpack, connected it to the iron case, and finally opened a certain software.

"Selena. Professor Morgan manipulated the computer and then said to Selena, "It's your turn." ”

Selena took out a small USB flash drive from her backpack and inserted it into her laptop, and the software interface on the screen changed instantly, revealing dense curves that kept flashing like waves.

"Alright. ”

Professor Morgan nodded, told everyone around him to find a place to sit down, couldn't move around, couldn't make any noise, and after making sure everyone understood, he pressed a red button on the iron box.

Knock –

A muffled sound came from underground, and Wu Jun keenly saw the lines on the laptop screen fluctuating violently.

This doesn't look like geological exploration, Wu Jun doesn't know much about this, but he still knows the basic principles.

Geological exploration uses acoustic detection, which is generally used to fire artillery.

The sound of "dong" just now was very slight, and if it weren't for his keen hearing, he probably wouldn't have been able to hear it.

Even if it is a geological survey, it is a small-scale, shallow survey.

Therefore, Wu Jun speculated that the old man's machine might be used to find diamonds.

I have to say that this is a great idea, if it can really be successful, then the diamond will become very easy to find, presumably those diamond companies, will pay a very high price to buy his equipment, or cooperate with him.

When the lines on the computer screen returned to normal, Selena clicked a button, and soon something resembling a map was generated.

Then she unplugged the USB stick and carefully retracted it into her backpack.

Professor Morgan looked at the picture without saying a word, and Wu Jun could see from his eyes that the results of this experiment did not seem to be very good.

"Do you want to use this thing to find diamonds?" Wu Jun asked Selena in a low voice, taking a chance.

"Are you really a prophet?"

Selena was surprised and surprised that Wu Jun would ask this, because this is a very unpopular research topic.

This idea has been proposed before, but it has failed because diamonds, unlike metals, are normally small and difficult to find in this way.

However, Professor Morgan has discovered a very sensitive material that can clearly receive the feedback signal of sound waves and convert them into electronic signals.

Coupled with her analysis software, she identifies the feedback waveforms that belong to the diamond to determine the size and location of the diamond buried in the ground.