America, Yale University, History Classroom.

"The Persian Empire was once the first country in the world to span Asia, Europe and Africa, but its great achievements collapsed after Alexander III, Macedonia, that is, Alexander the Great, showed his weapons. It was not until 50 years later that the Sassanian Empire inherited the mantle of the Persian Empire. Although it was already the afterglow of the sunset, it was still brilliant and heroic. In 224, Ardashir I, the founder of the Sassanian Dynasty, defeated the Sassanian Dynasty and established the new Persian Empire, also known as the Second Persian Empire, and he was honored by the Persians as the King of the Kings."

The huge staircase classroom is packed, and students of all skin colors are listening to the lectures of Professor Andrew, 54. As a well-known history professor, his classes have always been popular among students.

Andrew switched to the slideshow on the big screen, and a yellow gold coin appeared on it. The front of the gold coin was an ancient man wearing a hat and a balance on the back.

"This gold coin is the 1 dinar gold coin of Ardashir I of the Sassanid Dynasty. Its style is very close to modern currency. Researching it can allow us to better understand the currency's exhibition history."

The bell rings...the bell rings after class.

The students stood up to pack up their things, and Professor Andrew was still loudly reminding: "In the next class, we will talk about the Rest Dynasty. Interested students can check the information in advance."

After all the students walked out of the classroom, a young girl came in and she smiled and greeted Professor Andrew who was packing up teaching aids.

"uncle!"

Andrew raised his head and immediately smiled: "Anna! Why did you come to me?" After saying that, he hugged Anna with open arms.

After a simple polite approach, Anna expressed her purpose for her visit today, and she took out the mysterious coin.

"Uncle, can you help me see this coin? It is very important to me."

After taking the coin, Andrew held his glasses and narrowed his eyes, and his face gradually became full of surprise and doubt.

The overall color of the coin is dark and gold, which is quite heavy. Its front is a cluster similar to a hexagram star, with an unknown line of symbols on the edge, and a vicious wolf head pattern on the back.

"Anna, where did your coin come from?" Andrew looked up and asked Anna. He had never seen a coin of this style, but one thing is certain that if it were an ancient currency, its appearance would not have been so perfect, almost the same as coins produced by modern machines.

So he suspected that the coin was a product of modern industrial.

"I found it at a case site. Are there any problems, uncle?" Anna asked strangely.

Andrew answered truthfully: "I have never seen this coin, and I suspect it is a product of modern industry."

Anna immediately shook her head. She saw with her own eyes that the coin fell out of the human wolf monster, and it was definitely not a product of modern industry.

After thinking about it, she asked, "Uncle, can you be sure what this coin is made of? I don't feel like it's gold."

"I can't be sure with the naked eye and touch alone. Let's go to the physics laboratory and ask them to help us check it out." Andrew was also interested, and after tidying up his things, he took Anna straight to the physics laboratory in the teaching building in District B.

When he arrived at the laboratory, Andrew found a Chinese staff member.

"Zhao, please help me check the ingredients of this coin."

"Okay, professor." The staff member named Zhao nodded, took the coin and went to take samples, while Andrew and Anna were waiting.

Taking advantage of this time, Andrew asked Anna about the origin of the coin, and Anna whispered to him. Andrew looked surprised: "Mysterious monster?"

"Yes, uncle. But you must keep this matter confidential, because the matter has not been fully investigated, and the monster's body is mysteriously missing again. Many people are staring at this matter. I don't want you to have an accident." Anna reminded.

Andrew nodded, and the suspicion on his face became even stronger.

The two of them waited for about half an hour before the staff member named Zhao came over with the test report, with a look of surprise on their faces.

"Professor, the result is out. The six metal elements that make up the coins do not belong to any of the Sky Blue Stars..."

"It's true!" Andrew already knew the origin of the coin, so he was not surprised to hear the result.

"But..." The staff member wanted to speak but stopped, and then he was confused for a while before saying: "However, I have some clues about this coin."

Andrew and Anna both looked at him, and the staff member said, "A few days ago, a friend from Longteng Kingdom sent me a sample and asked me to help with the test. Among them, the o.o4% of the elements do not belong to Sky Blue Star. However, it is the same as a certain element in the coin you sent!"

"Really?" Anna suddenly became excited. As an agent, she was extremely sensitive in her mind and immediately realized that she could follow the clues to find clues about this coin, so she might also unlock the secret of the human wolf monster.

Andrew also became very interested in this matter and said, "Zhao, can you tell me the contact information of which of your friends?"

"Of course." The staff said it happily.

Anna was very excited when she got the contact information. She hugged Uncle Andrew and said, "Thank you uncle! You are really my goddess of luck!"

Andrew smiled and said, "But I am a man!"

"It's all the same!" Anna waved her hand and ran out. She was about to set off to investigate Longteng Kingdom immediately.

Andrew leaned out of the laboratory and shouted, "Remember to tell me the results of the investigation!"

...

Japan, Tokyo, Nanako's home.

In the small living room, the TV is playing the scene of the eclipse of the day before, corpse flies attacking tourists at Disneyland. Although there are some bloody and cruel places, they can still see bright red.

Xiao Chen walked over and turned off the TV so as not to have an impact on Nini's young mind.

"Dad, what are those weird bugs? So scary!" Nini is still scared of the scene that day.

Xiao Chen smiled and said, "It's just some mutated flies, Nini doesn't have to be afraid. Next time we encounter them, we will use insecticide to eliminate them."

"Well! It's Nini's turn to protect her father and Aunt Caicai!" Nini waved her hand vigorously.

The door opened, and Nanako walked in. She shook her shoes and put them on the wooden table with a large stack of books in her arms. She breathed and said, "These professional painting materials are so expensive! They cost me tens of thousands of yuan!"

Nini ran over, picked up the book and looked left and right, and said, "Aunt Caicai, your comics are very good, why do you have to buy these books to study?"
Chapter completed!