The princess arrives and the prosperous Tang Dynasty begins

After Lin Xiao and Li Xuan returned to the modern world, although they were not quite used to the environment here, they quickly integrated into modern life. Lin Xiao resumed her career in the modern world and became an outstanding scientist. Li Xuan quickly emerged in the business world with his wisdom and leadership.

However, returning to the modern world does not mean the end of their mission. Lin Xiao and Li Xuan realize that their knowledge and experience have given them greater responsibilities. They must continue to exert their talents and make greater contributions to modern society and the future.

One night, Lin Xiao was doing research in the laboratory when he suddenly received a mysterious email. The email only contained one sentence: "Your task has not been completed yet, please go to the designated location to accept a new task." There was an address at the end of the email.

Lin Xiao was full of doubts, but she decided to go to the location according to the instructions in the email. She immediately notified Li Xuan, and the two decided to go together to find out.

Lin Xiao and Li Xuan followed the address in the email and came to an abandoned factory on the outskirts of the city. The factory door was closed, looking gloomy and mysterious. They looked at each other and walked into the factory firmly.

In a hidden corner of the factory, they found a small room with lights on. When they opened the door, a middle-aged man in a black suit was sitting at the table, waiting for them.

"Welcome, everyone. My name is Chen Yun, and I'm a member of the International Security Bureau." The man stood up and said with a smile, "Your return has attracted our attention, and we need your help."

Chen Yun explained their purpose in detail. It turned out that the International Security Bureau had been paying attention to abnormal phenomena around the world, especially the possibility of time travel. They found that there was a huge energy fluctuation hidden behind the return of Lin Xiao and Li Xuan, which might be related to the global space-time stability.

"We suspect that these energy fluctuations are controlled by some unknown forces, who are trying to achieve their ulterior motives by changing history." Chen Yun said, "Your presence proves the feasibility of time travel. We hope you can help us investigate and stop these unknown forces."

Lin Xiao and Li Xuan looked at each other, knowing that this would be an extremely difficult task. But they also understood that only by relying on their wisdom and experience could they truly solve this problem.

"We are willing to accept the mission." Lin Xiao said firmly, "In order to maintain the stability of time and space, we will do our best."

Li Xuan also nodded in agreement: "We have experienced many challenges, and we will not back down this time."

Chen Yun praised their decision: "Thank you very much for your courage and determination. Next, I will introduce the specific content of the mission in detail."

Chen Yun unfolded a world map with several red dots marked on it. He explained that these dots were the places where abnormal energy fluctuations had occurred recently, and preliminary judgment showed that they might be the source of space-time instability.

"Our mission is to find the core of these locations, investigate the truth behind them, and prevent possible tampering of time and space." Chen Yun said, "Each location has different conditions. You need to formulate corresponding strategies based on the actual situation."

Chen Yun pointed out the first target - the Egyptian pyramids. It is said that there have been abnormal energy fluctuations inside the pyramids recently, and it is possible that the ancient time and space gate has been activated again.

"The Egyptian pyramids are the first stop of our investigation." Chen Yun said, "You need to dive into the pyramids, find the source of the energy fluctuations, and figure out the reasons for these fluctuations."

Lin Xiao and Li Xuan immediately began to prepare. They consulted a lot of information about the Egyptian pyramids and contacted a local archaeologist as a guide.

Before setting off, Lin Xiao and Li Xuan received special training from the International Security Bureau, including the use of high-tech equipment, emergency response and self-protection. Lin Xiao also studied the application of modern technology in archaeology to ensure that he could flexibly apply this knowledge in the pyramids.

"Xiao'er, we must be careful. The inside of the pyramid may be full of unknown dangers." Li Xuan reminded.

Lin Xiao smiled and nodded: "Don't worry, Brother Xuan, we have been through so much, we will definitely overcome this challenge."

After arriving in Egypt, Lin Xiao and Li Xuan, led by local archaeologists, came to the magnificent pyramids. They entered the pyramids and began an intense exploration.

The passages in the pyramid are narrow and complex, full of traps and puzzles. Lin Xiao and Li Xuan moved forward carefully, avoiding many dangers. Relying on modern scientific and technological equipment, they successfully found the source of the energy fluctuations - an ancient stone door.

The stone door was engraved with complex runes, emitting a mysterious light. Lin Xiao used her knowledge to decipher some of the runes and found that it was a portal to an unknown time and space.

Just as Lin Xiao and Li Xuan were preparing to investigate further, a group of unidentified people suddenly appeared, apparently to stop them. These people were well-equipped and obviously professionally trained.

"It seems that we are not the only ones interested in this door." Li Xuan said vigilantly.

Lin Xiao quickly calmed down: "We must protect this door and not let them succeed."

The two sides launched a fierce battle. Lin Xiao and Li Xuan successfully repelled the enemy with their wisdom and combat skills. But they also realized that these people were not ordinary enemies, and there must be a bigger conspiracy behind them.

After some efforts, Lin Xiao successfully cracked the runes on the stone door and found a way to seal the door of time and space. Together with Li Xuan, she used the power of Tianshu, Dizai and Renhe to reseal the dangerous door of time and space.

"This is just the beginning." Lin Xiao wiped the sweat from his forehead, "We still have many tasks to complete."

Li Xuan nodded: "No matter how difficult it is, we will persevere to the end."

After completing the mission, Lin Xiao and Li Xuan returned to the base of the International Security Bureau. They reported the progress of the mission to Chen Yun and discussed the next action plan.

Chen Yun highly praised their performance: "Your courage and wisdom are admirable. Next, we will continue to monitor global energy fluctuations and be ready to respond to new crises at any time."

Lin Xiao and Li Xuan know that the road ahead is still full of challenges. They decide to continue to shoulder this responsibility, protect the stability of time and space, and prevent any attempt to tamper with history.

"We will definitely find the mastermind behind this and uncover all the mysteries," Lin Xiao said firmly.

Li Xuan held her hand and responded confidently: "No matter how many unknown dangers lie ahead, we will fight side by side to protect our world."