The princess arrives and the prosperous Tang Dynasty begins

After leaving Yueying Village, Lin Xiao and Li Xuan continued their fantasy adventure. This time, their goal was the ruins of an ancient city that was said to hide countless treasures and secrets. Legend has it that this ancient city was destroyed in a sudden disaster, and no one dared to enter after it became a ruin. Until recently, there were rumors that someone had discovered ancient mechanisms and treasures in the ruins. Lin Xiao and Li Xuan decided to go on an adventure to uncover the secrets of this ancient city.

After several days of trekking, they finally arrived at the ruins of the ancient city. The ruins were surrounded by tall walls, which were covered with mosses and vines, making them look ancient and mysterious. The ruins were everywhere in the city, and the collapsed buildings and broken statues told the story of the glory and decline of this ancient city.

Lin Xiao and Li Xuan walked through the ruins carefully, carefully observing every corner, looking for the legendary ancient mechanism. They stopped in front of a collapsed palace. The gate of the palace had collapsed, but some exquisite carvings and murals could be vaguely seen inside.

They walked into the palace and found some strange patterns and runes on the ground, as if guiding them in the direction they were going. Li Xuan carefully studied these runes and found that they were somewhat similar to the runes in Yueying Village. He speculated that these runes might be the starting device of some kind of mechanism.

Lin Xiao and Li Xuan continued to explore and came to the depths of the palace. Here, they found a huge stone tablet, which was engraved with complex runes and patterns, and there was a groove in the center, as if it was used to place some kind of object.

Li Xuan suddenly thought that the crystal obtained from the Spirit Lake might be the key to activate the mechanism. He took out the crystal and carefully placed it into the groove of the stone tablet. Suddenly, the stone tablet began to glow, and the light spread along the line of the runes, and the whole palace seemed to be lit up.

Suddenly, the ground began to shake, and a crack appeared on the wall of the palace. A hidden secret door slowly opened, revealing a secret passage leading underground. Lin Xiao and Li Xuan looked at each other and decided to enter the secret passage to find out.

The secret passage was dark and damp, with cobwebs and moss hanging on the walls. They lit torches and walked along the secret passage. The secret passage was winding and seemed to have no end, but they did not retreat and walked forward firmly.

After walking for a long time, they finally came to a huge underground hall. In the center of the hall was a high platform, on which was placed an ancient mechanism, surrounded by various complicated gears and levers. Above the platform hung a huge crystal ball, which was shining with strange light, as if it contained endless energy.

Li Xuan carefully studied the structure of the mechanism and found that it required the simultaneous activation of multiple levers and gears to activate the entire mechanism. He and Lin Xiao worked together to activate the levers and gears one by one according to the rune instructions on the mechanism.

As the last lever was activated, the whole hall began to shake, the mechanism made a roar, and a dazzling light shot out from the crystal ball. Suddenly, the ground began to sink, revealing a hidden staircase leading deeper underground.

They walked down the stairs and found themselves in a strange underground world. The scene here was amazing, with all kinds of strange plants and glowing minerals all around, and the whole space was shrouded in a soft light.

In the center of the underground world, there is an ancient altar, on which is placed a huge treasure chest. The treasure chest is engraved with exquisite patterns and runes, as if it contains endless secrets. Lin Xiao and Li Xuan approached the treasure chest and felt the powerful energy coming from it.

Li Xuan carefully opened the treasure chest and found many ancient scrolls and treasures inside. The scrolls recorded the history and secrets of the ancient city, and the treasures were various exquisite jewelry and utensils. Lin Xiao and Li Xuan were deeply attracted by these precious treasures, but they knew that there must be a bigger secret behind these treasures.

They carefully read the contents of the scroll and found that this ancient city was once a prosperous center of civilization, but was destroyed in a sudden disaster and became the ruins it is today. These treasures are sacred objects used by the residents of the ancient city for worship and protection, and contain powerful power.

At this moment, there was a sudden sound of footsteps at the entrance of the hall. Lin Xiao and Li Xuan turned around and saw a tall black shadow appear at the door. The black shadow slowly walked into the hall, revealing a familiar face. It was the black-robed man they met in the dark forest.

The man in black robe said in a low and majestic voice: "Your courage and wisdom are worthy of respect, but the secrets of this ancient city are far more complicated and dangerous than you can imagine."

Lin Xiao asked: "Who are you? Why are you here?"

The man in black robe said, "I am the guardian of this ancient city and the guardian of the Tower of Time. Your arrival is not accidental, but destiny. Only by unlocking the secrets of this ancient city can we find a way to return to the modern era."

Li Xuan said: "We are willing to accept any challenge, just to unlock the secrets of this ancient city and find the way home."

The man in black robe nodded and said, "Very good. I am pleased with your determination and courage. Now, I will take you to the core of the ancient city. The power there can unlock the secret of time."

The man in black robe led Lin Xiao and Li Xuan out of the hall and followed a secret passage to the deepest part of the ancient city. Here, they found a huge underground palace filled with all kinds of strange decorations and treasures.

In the center of the palace, there is a huge altar, on which is placed a huge gem, which is shining with countless lights, as if it contains the power of the entire universe. The man in black robe said: "This is the core of time, which contains the secret of traveling through time and space. You need to place the Moonlight Mirror, Silver Moon Sword and Star Orb in your hands on the altar to activate the power of time."

Following the instructions of the man in black robes, they placed the three artifacts on the altar. Suddenly, the gems began to glow, and the light gradually became stronger, and the entire underground palace was shrouded in a dazzling light.

A powerful energy wave surged out of the gem, covering Lin Xiao and Li Xuan. They felt as if they were in an endless space and time, and everything around them became blurry and unreal.

Suddenly, they saw a crack in time and space, with bright light shining through it. The man in black robe said, "This is the passage to your era. Step into the crack and you will return to your own world."

Lin Xiao and Li Xuan thanked the black-robed man gratefully and stepped firmly into the space-time rift. They felt a strong attraction, as if they were drawn into a space-time tunnel, passing through countless stars and nebulae.