"This set of rubbings of "Stone Drum Inscriptions" from the late Ming and early Qing dynasties is given to you."
Qin Tian smiled and handed an old yellow scroll to Yang Deguang.
What?
Stone Drum rubbings?
Yang Deguang could hardly believe his eyes.
In the eyes of ordinary people, this roll of yellow paper is not even worthy of being used as toilet paper and has no value.
However, for ancient Chinese researchers like Yang Deguang, it is a priceless treasure!
"Qin Tian, you can't make a fake one to fool the old man, right?" Next to him, Yang Lin questioned with a sneer.
Yang Deguang also had some doubts. However, he took it with trembling hands and could tell at a glance that it was a genuine treasure.
For a moment, I didn't know what to say.
Qin Tian put his hand into his bag and continued to take out things.
"Grandma, I heard from my mother that you are a geological expert and especially like to collect various gemstones. Because you think those stones are the most mysterious gifts of nature."
"This ring is for you."
He smiled and handed a ring set with an alexandrite the size of a fingernail to Zeng Hongxiu.
"Is this an emerald?" Zeng Hongxiu opened her mouth in surprise, and for a moment, she didn't dare to pick it up.
Qin Tian smiled and said: "Grandma is indeed an expert. So can you please tell us what emerald is?"
"It also allows us juniors to gain knowledge."
A strange light flashed in Zeng Hongxiu's eyes.
She originally thought it was too valuable to accept, but Qin Tian's words made her unable to refuse.
She took it with trembling hands, looked at it carefully, and then started talking about it in detail.
"Emerald, also known as the King of Emeralds."
"The main component is beryllium aluminum silicate, hexagonal crystal system."
"One-axis crystal has negative optical properties, hardness...refractive index...density..."
Su Su laughed loudly and said: "Grandma, this is a very beautiful gemstone, but after hearing you say it, it feels like an ordinary stone."
"Sure enough, there are some things that you just need to know how they are, not why they are so."
Zeng Hongxiu breathed a sigh of relief and said, "Little girl, what do you know?"
"This is nature's most magical code for thousands of years. It is also the most precious gift to mankind!"
Qin Tian smiled and said: "Grandma, you are so professional, can you tell the place of origin?"
Zeng Hongxiu said: "The main producing areas of emeralds are Colombia, Russia, South Africa, Zimbabwe, Brazil, Zambia, Tanzania... and more than a dozen countries."
"Currently, the most common ones in the international market are Colombia, Brazil and Zambia."
"Where exactly this piece comes from, I still need to go back and use a Charles filter to observe the chromium ion content inside to be able to judge."
Qin Tian smiled and said: "Grandma, you missed one place. Have you forgotten the oldest place of origin?"
"Ancient Egypt?" Zeng Hongxiu trembled and said almost instinctively: "Cleopatra's mine?"
"You mean, this emerald came from Cleopatra's mine in ancient Egypt?"
Qin Tian nodded with a smile.
Su Su frowned and said, "Cleopatra, why does this name seem so familiar?"
"That's the name of Cleopatra." Zeng Hongxiu sighed and said solemnly: "Qin Tian, this thing is too precious."
"My old woman can't accept it!"
Qin Tian had expected this a long time ago, and said to Su Su deliberately and aggrievedly: "Please advise grandma. If she doesn't accept it, she still treats me as an outsider."
Su Su hurriedly hugged Zeng Hongxiu's arm and acted coquettishly.
Yang Deguang laughed and said: "Old woman, since Qin Tian said so, you just accept it."
"This is also the intention of the couple."
This "couple" can be regarded as admitting that Qin Tian is Su Su's husband.