Siheyuan: Eastern Qigong Master

The entrance to the cave was blocked by rocks.

There was a group of yellow leopards inside, about a dozen of them.

With a group of yellow leopards, a large number of yellow leopards can be raised.

Ning Xiaoming was extremely puzzled. The mating season of the yellow leopard is in January and February, and they are solitary animals. How could there be a group of them here?

During the breeding season, yellow leopards gather here. Due to the presence of many large carnivorous animals, they are trapped here and form a small group.

Lightning orchid finger!

One by one, the yellow leopards fell down.

A thought was collected into the strange space.

Very good, there are more than twenty yellow leopards.

With this batch of yellow macaques, the yellow macaques will be free after a year.

"Buzz!"

Ning Xiaoming walked out of the cave and saw a hornet flying over and circling above his head.

Ning Xiaoming looks suspicious?

The wasp was just circling above my head without any expression.

Look carefully, the wasp's claws are holding a grayish-white stone, the size of a grain of rice.

Ning Xiaoming stretched out his hand and opened his five fingers.

The hornet placed the grayish-white stone in Ning Xiaoming's palm.

With one thought, the gray-white stone was collected into the strange space.

Use the purple energy of heart fire to burn the grayish white stone.

Since the stone is very dense and is a metal ore, we burned it to see what it is.

Ning Xiaoming showed a surprised look.

The gray-white stone was collected into the strange space, and the power of space automatically started to operate, devouring the gray-white color.

The power of thought blocks the space from devouring the stone.

When the grayish-white stone is smelted, it turns into molten lava.

Impurities are burned cleanly.

After the fiery red molten lava cools down, it turns into white silver particles.

Ning Xiaoming showed a look of surprise. He didn't expect that the grayish-white stone was actually silver ore.

Release the force of space on the silver shackles, and the silver particles quickly disappear.

Finally disappeared without a trace.

Ning Xiaoming was overjoyed!

The strange space even swallowed up silver.

The wasp found silver ore, so there must be a silver mine nearby.

"Where did you pick it up?" Ning Xiaoming said to Ma Feng.

The wasp cheered and led the way.

Ning Xiaoming summoned the half-step monster golden eagle.

"Take me flying." Ning Xiaoming jumped up and grabbed the golden eagle's claws.

"Follow the wasp."

The hornet flew over three mountains and came to a cave.

Ning Xiaoming used his lightness skills to reduce the weight of his body, and the half-step monster golden eagle barely carried Ning Xiaoming and flew.

Go into the cave.

It is not a natural cave, but was dug out by humans.

This is an ancient mine.

The first ten meters of the cave are all hardened soil.

Ten meters later, it turned out to be solid granite.

Granite with such high hardness is extremely difficult to mine.

The cave is fifty meters.

If it relies on manual mining, even if there are fifty people working in three shifts, it will take at least several months.

Come to the end of the mine.

Looking at the traces inside, it was not mined recently, but at least fifty years ago.

The end of the mine is still granite, and no signs of silver ore are seen.

But there was a crack.

Thumb-sized crack.

Look carefully, this crack appeared a few years ago.

For unknown reasons, cracks appeared in the mountains. Perhaps it was caused by an earthquake, or perhaps there was volcanic magma underground, and the cold and heat caused the mountains to crack.

Wasps collect silver ore from the cracks.

The wasp flew in and came out with another grain of ore.

It's still silver ore.

"Very good. If you have these in the future, bring them back." Ning Xiaoming praised Ma Feng.

The wasps cheered.

After all, it found a beehive, and Ning Xiaoming was unhappy and thought it was a waste of time.

Ning Xiaoming was so happy to find the gray-white stone. The hornet, who used to be very self-abased, felt that he was doing well again.

Ning Xiaoming took out a dagger.

The dagger is extremely sharp and can cut rock as easily as cutting tofu.

Blocks of granite were cut out.

Cut in one meter.

See a grayish-white silver line.

This is a very high silver ore.

Surrounding the silver line is the associated mineral, which covers an area of ​​about one foot.

Associated minerals also contain silver, but the content is lower.

Ordinary silver ores do not contain natural silver, but the silver mines here actually contain naturally formed silver, making them rich mines.

If it were someone else, they would collect natural silver, then crush the silver ore, corrode the silver with sodium cyanide, and then reduce it with zinc wire, reducing the silver and other metals into black or grayish white powder.

These powders are heated to high temperatures and turned into metal ingots.

Unless the silver ore is very pure, it contains other metals such as lead and copper.

There are several ways to extract silver, the two most common ones are:

After smelting the powder and turning it into metal ingots.

Make a fire pan with cement, or better yet, wood ash, and burn it with a strong fire to turn the metal ingots into molten lava, then use lead to take away other metals, leaving behind silver and gold.

Get very high purity silver, then use sulfuric acid and an enamel plate to heat the silver into liquid sulfuric acid.

Silver will turn into water, and gold will turn into yellow mud.

Silver dissolved in sulfuric acid can be reduced with zinc wire and turned into a tofu-like substance. When zinc wire is put in, it will turn into grayish white mud.

Or use iron instead of zinc wire. After all, iron is cheaper than zinc wire and can be restored in the same way.

Another way is to melt the metal ingots directly with sulfuric acid, and then use salt to turn gold and silver into tofu pudding.

Other impurities will go away with the acid water, leaving behind silver and gold, but this operation is generally suitable for refining small amounts of less than one kilogram.

For Ning Xiaoming, there is no need for such complicated methods to decompose and refine silver and gold.

Pieces of ore were collected into the strange space.

The ore was two meters long and one meter wide. It was collected into the strange space and was immediately swallowed up by the power of space.

After being swallowed by the power of space, what was left was granite stone, which did not need Ning Xiaoming to refine at all.

Follow the thumb-sized cut of silver wire.

Cut out a mine tunnel three meters high and two meters wide.

About one meter is ore, and the rest is granite, which does not contain any metal.

I don’t know how long the vein is. At present, the entire mine, both below and above the head, is still the vein.

After cutting ten meters in, the vein became smaller and the silver line disappeared.

The one-meter-long mineral vein became the size of a palm.

We continued digging deeper, not knowing whether there would be more mineral veins.

But there are mineral veins more than one meter deep above and below, so there are only two choices now, dig up or dig down.

Even though the dagger is very sharp and does not need to be cleaned with slag, it can be directly collected into the strange space. However, manpower is limited. Even if Ning Xiaoming has supernatural powers, he still feels tired.

Considering the furnace in the machine repair shop, it would take at least three days to build it.

Thinking of hunting pets, I shook my head, they are not suitable for mining.

Crane forklifts are not a product of this era. To manufacture them, we need to do some careful research.