Now Tianshui City is spending money like flowing water, more than one million taels of silver is far from enough to spend, and the area containing gold sand in the Jinsha River is just like that, and it has been collected by Liu Yuetian in the past few months, and he is ready to go to Nashu Mountain to make a big move next.

Twenty miles downstream along the Jinsha River is a group of mountains that stretch for thousands of miles, this is the northernmost beginning of Shu Mountain, the Jinsha River pours down from Tibet and hits the rock wall, after many years of erosion, it is hard to break through the mountain body hundreds of zhang wide, and then the river is like a giant dragon through the mountain, the formation of the river mouth is named Shulong Yakou by the locals, Liu Yuetian has been here before, and a large amount of gold ore was found on the cliff above the cliff, The gold sand in this river is the result of the deposit of gold ore in these rock masses.

Although the gold ore on the mountain is abundant, it is not like gold sand that can be obtained casually, and Liu Yuetian needs to mine it himself.

How do people in this world extract ore from huge mountains? Chisel with a hammer? That's troublesome, even if tens of thousands of people dig a stone mountain, it will take years.

Fortunately, people are smart enough to think of the trick of burning the mountain, and then pour cold water on the rock after it is hot, the huge temperature difference can make the stone crack, and then the ore can be chiseled down more easily.

However, for Liu Yuetian, a great physicist, it would be too stupid to use this method again, even in this era of cold weapons, he has no less than several better ways to get those gold ores, and the easiest way is to use explosives to blow up.

Black powder is a kind of explosive mixed with three kinds of ores, the power is average, but fortunately, the raw materials are easy to obtain, Liu Yuetian's table on the pile is saltpeter, realgar and charcoal, saltpeter contains nitrate, realgar contains sulfur, charcoal is naturally charcoal, as long as these three elements are mixed in a ratio of one to two to three, then black powder is formed.

"Okay, Sun Chi, you go and call your brother Zhang and them over, mix these three ingredients together according to the method I configured, and ...... first Let's get a hundred copies out first! ”

The others didn't know what Liu Yuetian was going to do, and they didn't ask, anyway, they would do whatever the master told them to do, and soon a group of people were covered in pitch black.

"Get out of the way!"

Liu Yuetian put one of them in a corner and asked everyone to stay away more than ten zhang away, and then he took out a hemp rope and put it in the gunpowder, and the other side was lit with a fire sickle, and soon, the burning hemp rope ignited a bag of gunpowder weighing several catties.

"Bang!"

A loud bang frightened everyone to their feet, and a puff of smoke rose into the air, scattering a pile of tiny rubble.

"Mom! What is it? ”

Everyone was in shock.

"That's gunpowder."

"Gunpowder? It's really a medicine that can ignite fire! This thing is amazing, my lord, what is this thing for? ”

Zhang Xingsan and others surrounded him.

"This thing is very useful, line three, wrap each of these things, idea, don't encounter open flames, and then go find a dozen stonemasons and a dozen strong ropes, and twenty carts, we will go to the mouth of Shulong Cliff."

Everyone acted immediately, and after a while, more than a dozen stonemasons were found, and Liu Yuetian led everyone to drive to the mouth of Shulong Cliff in a big car.

More than an hour later, everyone came to the Shulong cliff mouth, the Jinsha River enters Shu Mountain from this cliff mouth, it is now close to the early spring, the earth has not yet been opened, the flood season of the Jinsha River has not arrived, the river water is clear and flows slowly.

The system has shown that this hundred-foot high cliff contains rich gold deposits, and there are nearly 1,000 taels of places that can be detected alone.

Liu Yuetian led everyone to climb the cliff, and then tied a rope to the cliff and hung down.

"Your Highness, are you going to dig a mountain?"

Those stonemasons have been digging and quarrying in the mountains all their lives, and they can also see some ways at this moment.

"That's right, all the masters are experts, and I'm going to collect some ore on this mountain."

"Ore? Your Royal Highness, the rock at the mouth of the Shulong Cliff is very soft, not suitable for building a house at all, and it is very difficult to quarry stones on the cliff, but the stones on the Fulong Mountain are good stones, and they are everywhere, and I can chisel out a hundred catties of stones in one day. ”

A stonemason replied cautiously.

"Old Huotou, do whatever Your Highness tells you to do? What to do with so much nonsense? ”

Zhang Xingsan glared and said loudly, for him, Liu Yuetian's order was a holy decree, and he had to do it unconditionally.

"Yes, yes, no problem, no problem."

The stonemason hurriedly nodded in reply.

"Masters, you just listen to me, and you don't need to dig it, you just need to dig out the cavities where these black medicines can be placed, put these black medicines in and close them."

These stonemasons didn't say much, one by one they wrapped ropes around their waists and went down, and according to Liu Yuetian's prompts, they now made more than a dozen fist-sized stone holes on the cliff wall near the river, and then put the black powder into it, and then sealed the holes with stones after connecting the straw ropes.

"Bang bang bang!"

After a loud noise, hundreds of pounds of stones fell off the cliff wall and fell into the river, the black powder was not strong, and the explosion just now only loosened the rock wall, and the stonemasons carefully hung down, and chiseled more than a dozen times with a sledgehammer against the loose rock mass.

"Whoa!"

Again, large swaths of stones fell into the river.

After going back and forth several times, the ore that fell into the river was nearly 100,000 catties, and these stones contained more than 300 taels of gold.

"All right, let's go down and collect all these stones and put them in the cart."

Without saying a word, Zhang Xingsan went down the river with more than 200 guards and carried stones ashore.

"Masters, what do you see in these ores?"

Liu Yuetian picked up a fist-sized stone and handed it to a stonemason.

"What's that?"

The stonemason took it and looked at it carefully.

In the eyes of these stonemasons, the texture of this stone is a little soft, it is really not a solid stone, but under the sunlight, the stone seems to emit a faint luster.

"What is this?"

Several stonemasons looked at the stone, and suddenly, one of the oldest stonemasons seemed to think of something, and he hurriedly bent down and picked out a large stone weighing hundreds of pounds from the stone mill.

"Ahh You see, this is gold, it's a gold mine! That's right, it's a gold mine, and it's a bonanza! ”

All the stonemasons leaned down and looked over, and sure enough, under the sunlight, this boulder was glowing with a golden luster, and the naked eye could see a lot of substances like gold dust embedded in this stone, they were all stonemasons, and they could see at a glance that these were gold, and what they saw in this boulder was afraid that there was half a penny, and the whole boulder could exceed five or six cents, what is this not a gold mine? What is this not a bonanza?

"Ah, it's gold! Now you can make a fortune! ”

All the stonemasons cheered.