In the movies and TV series filmed in Huaxia with the background of Daoguang, Xianfeng and Xuantong in the Qing Dynasty until the last emperor, the officials and ordinary people used either copper coins or silver in their daily lives, and the silver is generally a silver ingot, a strip of silver or a broken silver like a small pebble.

In fact, many of Yang's descriptions are wrong, because since the late Ming Dynasty, a large number of "Kabo" silver coins have entered China - some people have calculated that from 1550 to 1645, that is, from the 29th year of Jiajing in the Ming Dynasty to the first year of Hongguang and the first year of Longwu in the Ming Dynasty, and in the second year of Shunzhi in the Qing Dynasty, 14,000 tons of silver flowed into China from overseas, which was nearly 10 times the amount of silver produced in China during this period!

During the first five dynasties of the Qing Dynasty, it is estimated that there will be more inflows, of which "Kabo" silver coins account for a large proportion, but at that time China used transliteration to call them "pesos".

Since the Qianlong year of the Qing Dynasty, the rich people in the coastal areas of China have appeared in the hands of 9 percent of the fineness and the weight of the basically constant double-column native ocean.

Zhang Nan maliciously guessed about this - those screenwriters and directors definitely don't have his historical skills, plus a little deliberate "historical demand", otherwise what are you and me doing in the Qing Dynasty with foreign silver dollars?

There is also an estimate of traditional inertial thinking and visual effects, such as Zhou Xingxing's "Jiupin Sesame Official", if silver dollars are used instead of silver bars to frame Lord Bao, then the effect will be more funny.

The last possibility is that the "silver ingot" props are easy to get and the cost is low, and the difficulty of the silver dollar props is obviously much more difficult!

To put it bluntly, for the sake of profit, any historical facts can be ignored.

There are a lot of silver coins in the wreck, which gives a lot of hope. Vita's trip was to explore the way, and he didn't expect him to start salvage in modern times - deep-sea salvage is a delicate job, and a few atmospheric diving suits alone are not enough, and other equipment must be added.

It's a long time, there are a lot of things, anyway, it's a lot of trouble, and it costs money.

Zhang Nan said to Yasuko Sawaguchi: "Not counting the equipment purchase cost, the cost of ships and people alone is one or two million a month, and the longer it drags on, the greater the cost." ”

Hearing this, Yasuko Sawaguchi said: "Don't lose money." ”

Zhang Nan smiled at this, "Who knows, if there are more things below, you can't lose anything." ”

As he spoke, he took the intercom, pressed the call button, and said, "Vita, don't pay attention to those silver coins for a while, you can go to the mud on the seabed first, and see a few more places." ”

Letting go of the call button, Vita Bruno said, "Understood, boss." ”

The armour-type atmospheric wetsuit is not as convenient as an ordinary wetsuit, and it is cleaned with large pliers every time it kneels, and it is not as fast as two aluminum legs.

However, the method of wading can only remove a thin layer of silt on the top of the bed, and through the monitor, you can see that some silver coins have been waded out, but more places are still mud.

Zhang Nan is not in a hurry, this ship has been sinking for almost three hundred years, the wooden structure has long been rotten, and the goods inside will also sink, which has to be dug slowly.

Weta walked happily under the seabed, and he didn't care if it was a little strenuous, otherwise he would have used those four thrusters to move around the seabed.

The more treasure the salvage company gets, the higher the bonus for their employees. If this is really the San Jose, then everyone can make a lot of money this time.

Money gives people strength, and Vita's legs don't feel so tired, which also walks briskly.

And then...

The screen shook, and everyone in the dive command room heard Vita's words: "it!"

Everyone stood up in shock, and Yasuko Sawaguchi even exclaimed: The humanoid armor is obviously falling forward!

At this time, it was impossible to balance with the thrusters, and then there was a gust of muddy water stirred up by silt, but fortunately the sound of Weta could be heard.

It's good to have a sound, which means that the diving suit is at least not broken, otherwise the water pressure of more than 20 times the atmospheric pressure can kill him instantly!

After a while, Weta finally stood up again, and now Zhang Nan didn't want Weta to continue walking: he tripped over something, lost his balance and pounced forward.

The quality of hundreds of thousands of equipment is really good, at least this oversized glass helmet is strong enough!

Zhang Nan asked him to immediately return to the surface to check whether the diving suit was damaged, but Weta wanted to find out what it was that couldn't get along with him, causing him to fall under more than 200 meters of water!

No, I manipulated the thrusters on both sides and made a 360-degree turn.

The stirred up muddy waters had cleared, and what appeared to be something could be seen on the seabed.

Weta knelt down on one knee again, and after a while of fiddling, Zhang Nan in the command room listened to him: "Boss, it seems to be an ore." ”

Zhang Nan could also see what it was through the display screen, "It's ore, it may be emerald ore, just this crystal block...

That's a little too big!"

What are the local specialties of Colombia today besides drug lords and rainforests?

Emerald!

The emeralds produced in Colombia are the first in the world, and the top quality can even be sold for two or three hundred thousand dollars a carat!

Europe has always loved emeralds and designated them as gemstones, and there are far more people who like it than in the East.

The earliest known emeralds in Europe came from Egypt, but since the Spaniards got emeralds in South America in the 16th century, Europeans threw emeralds from Egypt to Siberia!

Today, Colombia is the world's largest source of high-quality emeralds, almost monopolizing the international market, and can account for 80% of the world's total production of high-quality emeralds.

The Spaniards began mining Colombia's emerald mines from the mid-16th century until they became Colombian state in 1886.

110 boxes of emeralds, or rough crystals mined in the early 18th century: Colombian emeralds are mainly produced in the calcite nanofeldspar veins of sedimentary rock systems, and the gems packed in boxes will first remove the calcite around the crystals, leaving only emeralds columnar crystals with an average length of two or three centimeters.

No matter how big or how many boxes there are, the Spaniards don't use thick iron plates to make boxes, they probably use wooden boxes.

The wood was rotten, and it was impossible for those tiny crystals to trip over Vita in his armored wetsuit.

But there are no absolutes!

What tripped him just now was an emerald ore, or a piece of ore that could weigh dozens of kilograms: not crystals with dozens of kilograms, but ore. Now in 92 years, the largest emerald crystal found is more than 7,000 carats.

The Spaniards from almost 300 years ago messed around, and this stone, the size of a few large watermelons, was "embedded in the stone with several interlaced emerald crystals."

This is a block of ore, not a rough stone.

The Spaniards are lazy, so why not remove the excess calcite?

Probably because the crystals on it were large enough, they wanted to be transported back to the king to give the treasure.