In Lemay's workshop, Shewin and Lemay are engrossed in the study of an oval object covered with runes.

"This alchemy product looks very old." Lemay muttered as she took a magnifying glass and carefully examined the runes engraved on it. "I can be sure that the person who made it is an amazing master alchemist, and that the alchemy system of this product is unlike anything I've ever seen."

"Strange, I should have heard of such a person." Lemay asked, puzzled. "Xiwen, how did you find it?"

"When I saw it, it was presented as a Christmas present under the Christmas tree outside my room, and it was wrapped in a tattered cloth bag." Xiwen explained. "I don't know if it's dangerous, so I brought it here and asked you to show it for me."

"It's not dangerous, I can see that the runes of this item are above board." Lemay shook her head lightly and said to Xiwen. "Judging by the runes engraved on it, this is a container that can be used to hold other energy, and it should have many powerful magical functions."

"But to use it requires specific spells and gestures, and I don't have the ability to crack these key-like usages. If this is indeed a Christmas present for you, maybe it will leave you some clues or something in the package, think about it? ”

Of course, there were no clues left in the humble package, and the real clues came from memories in Kama Taj.

Shivin took the Eye of Agomoto from Lemay's hand, thought about it for a moment, and put it on his chest.

Then, he formed a seal with his hands in front of Agamotto's eyes, reciting the same spell he had seen in the Kama Taj Library.

As the seals of Xiwen's hands slowly pulled away from the front of him, the four arcs in front of him parted, revealing a demonic eye in the perfect circle structure—its eyeballs were very hollow, emitting a strong turquoise light.

"It's ...... The power of time?! Lemay felt the power sealed in the eyes of Agamotto, and his eyes widened suddenly, and he said in surprise. Isn't this just a power in the hands of the Department of Mystic Affairs of the Ministry of Magic? ”

"Do you know anything about the Department of Mysteries?" Xiwen became interested and asked curiously. At the same time, he also silently lifted the spell and sealed the power of time back.

"A little bit of understanding." Lemay nodded and explained to Xiwen. "The Department of Mystic Affairs of the Ministry of Magic of the Nation once asked me to help with the research of a number of things, including a magical alchemy item called a time turner, from which I learned a lot about time."

"In the Time Hall of the Department of Mysteries, there is a cabinet with a lot of time turners."

"Time Converter?" Xiwen was stunned for a moment and asked suspiciously. "What is it for? You can't really change time......"

"It's not as dramatic as the conversion time, but it allows a person to go back in time." Lemay said softly.

"To be able to go back to the past, does it mean that we can change the history of the past, and even change the direction of the future?" Xiwen thought for a moment and asked with a frown. "How can a time turner be so powerful, how can you have a lot of it in one cabinet?"

Xiwen didn't think it made sense.

In his previous world, he fully understood the power of the Time Gem, the power of time can literally bring people back from the dead and change the way things work! If the time converter in this world can be mass-produced, then the possibility of falling into the hands of the ill-intentioned dark wizards will be even higher, wouldn't that make the whole world chaotic?

"Actually, the time turner is not as incomprehensible as you think." Lemay gave Shevin a deep look and explained to him. "There are also rules for the transformation of time, one can go back to the past, but it cannot change the course of history."

"Even if someone uses a time turner to time travel, the history he changes is only the established history that has already happened, everything that this person has achieved forms a closed loop, and our world is the final outcome that has been changed."

"In other words, there is only one timeline in this world?" Xiwen asked with a frown.

"It can be understood that way." Lemay smiled and nodded.

"I still don't quite understand." Xiwen shook his head and asked.

"Since it is possible to change the past, let's make a hypothesis: if the person who got the time turner went back in time and killed the young grandfather, if the grandfather died, his father would not have been born, and without the father, there would be no person who got the time turner, then who killed the grandfather?"

"Invincible Begins with Sacrificing to the Ancestors"

Shevin asks about the grandfather's paradox that he had heard about in the previous world.

In the same timeline, this paradox is not possible. It wasn't until the advent of the parallel universe theory that everything that happened in this paradox had a glimmer of possibility.

But according to Lemay's explanation, there is such a thing as a time turner in this world, but there is only one timeline. That doesn't seem to make a lot of sense.

"Very esoteric question." Lemay nodded contemplatively and said to Xiwen. "Actually, there have been similar things like what you are talking about."

"At the end of the last century, there was a silent man in the Department of Mysteries who used a time turner to travel back in time during experiments, but died because she had stayed in the past for too long. In an experiment to return to the past, Eloence was trapped in 1402 for five days. ”

"Her travels have changed the trajectory of the lives of all the people she has met in the past, with at least 25 descendants disappearing from the modern era and becoming unborn beings!" Lemay said in a deep voice. "That's why the Ministry of Magic has established hundreds of laws regarding the use of time-turners."

"But doesn't this conflict with the time conversion rules you mentioned earlier?" Xiwen furrowed his eyebrows deeply and asked incomprehensibly.

"You're right, these two points do create a big conflict." Lemay sighed and said to Xiwen. "So there's a self-healing ability of the time-shifting rules."

"If the behavior that occurs in the time transition does not have a great impact, then the rules of time can fix it, pull the world line back to the final ending that has been changed, and make the logic of the time transition self-consistent."

"However, if one person has caused too much of an impact in the process of time travel, then some of the time rules will completely collapse, and it will not be able to pull time back to the main line, which will have catastrophic consequences!"

……

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