Old man Hao caught a glimpse of Zhao Tianming next to him, and he couldn't help but want to trick people.

I don't know why, I always look at that kid unpleasantly, maybe it's because he is sharp and jealous! Of course, he doesn't think so, he just thinks that kid is very underbeaten, and it makes people angry to watch.

He handed over the silver medal: "Xiao Zhao, you can also take a look, after all, your vision is obvious to everyone, and you may be able to interpret other information." ”

This kind of action, even the audience, feel that this old man is clearly targeting people.

From the beginning, the other two appraisal experts seemed to have opinions on Zhao Tianming, and they didn't wait to see him, they were always digging a pit, making Zhao Tianming jump and having to take the call.

To talk about the first few things, Zhao Tianming was out of the limelight and slapped the two of them in the face.

Later, Zhao Tianming took the initiative to back down and gave them the opportunity to perform. This old man still wants to cheat people, it's really shameless, shameless!

Don't take the audience for fools, everyone's eyes are bright, and you can see that this old man just has bad intentions.

Many people began to worry about whether Zhao Tianming could continue the previous style and beat this old headache to the water dog.

In short, they see that the old man is also an eyesore, and he has little ability, but the shelf is very high, and he really regards himself as an expert, but it is difficult to get to the point in the comments, which makes people very speechless and hypocritical.

Zhao Tianming has never been afraid, and when the soldiers come, they will block the water and cover the earth! He is not afraid of Old Man Hao at all.

He took the waist card, but without looking at it, he turned his head to look at Old Man Hao: "Senior Hao, are you sure this is a silver medal?"

Nonsense!

It's that Pang Zhonghua wants to explode foul language, not a silver medal, is it still a gold medal?

"Does Xiao Zhao still think it's a gold medal?"

Zhao Tianming smiled: "It's not impossible. ”

Oh my God, are you crazy?

Pang Zhonghua and Old Man Hao suddenly lifted their spirits, and they felt that they finally had a chance to beat this kid, and they should take advantage of the victory to pursue them now. said the wrong thing, they were not willing to give up this opportunity easily, and Zhao Tianming would also lose face.

After all, among the three of them, this guy is in the limelight, and it is the two of them who are disgraced.

Unconsciously, these two people are standing together again, and there is no discipline at all!

The audience, the treasure bearer and others on the stage were dumbfounded and could not accept this language. Suddenly I felt that Zhao Tianming was a little unconscious!

It's obviously silver-white, how can it be a gold medal?

"Hehe, Xiao Zhao won't think that this is made of platinum, right?" said Old Man Hao.

Platinum is also silvery-white, somewhat similar to silver. But in ancient times, there was such a thing as platinum? Unscientific, right? There has never been a record of ancient China using platinum to make waist cards, right?

It is a natural pure white white precious metal and is known as the king of precious metals. According to the national nomenclature for precious metals, only platinum can be called white gold. Platinum is pure and timelessly rare, never faded, worn without being damaged.

Platinum, which is said to have been non-earthly, is a rare metal from outside the heavens.

Two billion years ago, a huge meteorite struck the Earth, bringing this precious metal with it.

Anyone who pays attention to precious metals knows that platinum group metals are beautiful in color, malleable, resistant to melting, friction and corrosion, and chemically stable at high temperatures. As a result, they have a wide range of uses. Among the platinum group metals, platinum is the most familiar and used. It is rarer and more precious than gold, silver, etc., among the precious metals.

As early as the 18th century, platinum had already entered Europe, and was favored by King Louis XVI of France, calling it the only precious metal to match the title of king.

However, in China, the history of platinum use is not long.

In China, platinum resources are very rare, and the use of this metal is only about a hundred years old.

Therefore, it is impossible to use platinum to create waist cards in the Ming Dynasty.

Zhao Tianming smiled: "Platinum is not enough, but it is definitely not all silver. Why don't you take a look at it too?"

Pang Zhonghua hurriedly waved his hand, the fool is playing with you, it is obviously silver, am I blind? You die by yourself, don't pull me!

"Haha! It seems that Xiao Zhao's vision is very chic!" said Old Man Hao sarcastically.

Whether it's gold or silver, can't he tell it? All these years, he can be regarded as a fool. spread the word, saying that he couldn't even distinguish the silver, and the name of the expert was completely invalid.

The distinction between silver is actually very simple.

Some metals, similar to silver, are not difficult to distinguish from the real from the fake.

First of all, look at the color, the higher the purity, the whiter the silver, the more delicate, even, shiny, and polished. If it contains lead, the noodle will emit a tidal and blue-gray color, and if it contains copper, the noodle will be rough and rotten, and there will be a dry feeling. Oxidized silver has a black and shiny color despite the "black rust" on the surface, while lead, tin, and copper have no luster and a twilight color.

There is also hardness, in fact, pure metal, is not very hard.

Therefore, in ancient times, alloys were used to build weapons. What kind of golden sword or the like, in fact, is useless, because the hardness is not big enough, it is not sharp enough, and it is easy to damage.

The hardness of silver is lower than that of copper, and it is greater than that of lead and tin. Therefore, if the needle is slippery, it is difficult to leave traces on the surface, it can be judged to be copper jewelry; if it is lead and tin texture, the traces are obvious and prominent; if the real thing leaves traces but not too obvious, it can be preliminarily judged to be silver jewelry.

If you pay close attention, you can find that the jewelry of ethnic minorities is basically silver.

Those jewelry are very soft, bend silver jewelry by hand, soft and waxy, easy to bend and not easy to break, and the fineness is higher.

Of course, people with better ear skills can judge silver, copper coins, gold, and even silver in a few colors by listening to the sound, and they are also masters in ancient times.

If it is high-quality silver, it has no rhyme and no elasticity, and the sound is "pop". The lower the color, the sharper, higher and rhyming sound. If it is copper, its voice is higher, and the rhyme is rapid and short; If it is made of lead or tin, the sound of throwing the ground is dull, short, and has no elasticity.

"Could it be that my old man can't tell the difference between silver and silver?" said Old Man Hao.

Zhao Tianming looked at him with a smile, and turned his head to Luo Ping on the stage: "This big brother, you have been in contact with this waist card for so long, and you haven't found anything abnormal?"

"What is abnormal?" Luo Ping didn't know what Zhao Tianming wanted to express.

Zhao Tianming picked up the waist card and said to everyone: "Weight, the quality of silver is relatively light. However, this piece is obviously not the weight that silver should have, and there is a lot of difference. ”

Pang Zhonghua hurriedly came over, picked up the waist card, and immediately laughed at Old Man Hao: "Senior Hao, this is definitely not silver!"

As soon as these words came out, everyone at the scene blew up the pot, and there was a lot of discussion, and the eyes that looked at Zhao Tianming changed. This guy is simply not human!