Genshin Impact.

After experiencing the interweaving of fate, Lin Feng, Li'er and the old man continued on their journey to immortality. They came to a mysterious place called "The City of Fantasy Dreams".

The city is like a dream, with peculiar architectural styles and a faint mist on the streets, making people feel as if they are in a dream. However, under this beautiful appearance, there is an unknown crisis hidden.

Lin Feng observed the surroundings vigilantly and said to Li'er, "Li'er, be careful. It's too quiet here. I'm afraid there's something fishy going on."

Li'er nodded and followed Lin Feng closely.

At this moment, a mysterious voice sounded in their ears: "You are finally here, the destined traveler."

Lin Feng shouted loudly: "Who are you? You are hiding your head and showing your tail. Show yourself if you have the guts!"

With a chuckle, a figure slowly emerged. This person had a handsome face, but with a hint of evil smile.

"I am the guardian of this city. Your arrival is destiny," said the guardian.

Lin Feng frowned: "What destiny? We just happened to get here during our journey."

The guardian shook his head. "It's no coincidence. You are shouldering a great mission. Deep in this dream city, an evil force is sealed. If this force is released, the whole world will fall into disaster. And you are the only one who can stop this from happening."

Li'er's eyes widened: "We? Do we really have such ability?"

The guardian looked at them firmly and said, "You have special magical powers and courage. Believe in yourselves."

Lin Feng and Li'er looked at each other, and a hint of determination flashed in each other's eyes.

"Okay, we're willing to give it a try." Lin Feng said.

The guardian nodded and pointed them in the direction to go.

They walked along the winding street, and the fog around them became thicker and thicker, making it difficult to tell the direction. Suddenly, a group of strange monsters rushed out of the fog and attacked them.

Lin Feng was not afraid, wielding his sword, and engaging in a fierce battle with the monsters. His swordsmanship was sharp, and each strike contained powerful immortal power, and the monsters fell one after another.

Li'er cast a spell to support Lin Feng. The light of her spell illuminated the surrounding fog, leaving the monsters nowhere to hide.

After a hard fight, they finally defeated the monster. However, this is just the beginning, and there are more challenges waiting for them.

In an ancient courtyard, they encountered a powerful magical barrier. No matter how hard they tried, they could not break through it.

Just as they were confused, the old man's voice rang in Lin Feng's mind: "Child, calm down, feel the power around you, and look for flaws in the barrier."

Lin Feng closed his eyes and felt it with his heart. After a moment, he opened his eyes and found a slight fluctuation on the barrier.

"Lier, concentrate your strength and attack here!" Lin Feng shouted.

Upon hearing this, Li'er gathered all her spiritual power into the spell in her hand and attacked towards the place where Lin Feng pointed.

There was a loud bang, and the magic barrier was instantly shattered.

They continued to move forward and finally came to the place where the evil power was sealed. They saw a huge black vortex that constantly emitted a terrifying aura.

Lin Feng took a deep breath: "Li'er, are you ready?"

Li'er nodded: "Brother Lin Feng, let's go together."

They simultaneously performed their most powerful magic, light and darkness collided with each other, emitting huge energy fluctuations.

In the fierce confrontation, Lin Feng and Li'er's immortal power was gradually consumed, but their will became stronger and stronger.

Finally, the black vortex began to shrink and the evil force was gradually suppressed.

Just when they thought victory was in sight, a powerful recoil force suddenly erupted from the whirlpool, knocking them away.

Lin Feng fell heavily to the ground, spitting blood. Li'er ran over and helped him up.

"Brother Lin Feng, how are you?" Li'er asked anxiously.

Lin Feng endured the pain and said, "I'm fine. We can't give up."

They stood up again, holding hands, and gathered the last of their immortal power together.

This time, the light completely submerged the darkness, and the evil power was completely sealed.

The Dream City returned to its former tranquility. Lin Feng and Li'er fell to the ground exhausted.

The guardian appeared in front of them and said with a smile: "You succeeded. You saved the city and completed the mission that fate gave you."

Lin Feng and Li'er smiled at each other. They knew that this was just a stop on the journey to immortality and there was still a long way to go in the future.

They left the City of Dreams and continued on their unknown journey to meet new challenges and missions.