Genshin Impact.

After experiencing many twists and turns in their immortal journey, Lin Feng and Li'er are still firmly on the road of experiencing tribulations.

One day, they came to a small town called Qingyun. The city was bustling with people coming and going, but Lin Feng and Li'er's eyes were filled with vigilance and exploration.

"Brother Lin Feng, this city seems ordinary, but I always feel there is an unusual atmosphere." Li'er said softly.

Lin Feng nodded slightly, "Be careful, this tribulation will not be easy."

They stayed in an inn in the city, and at night, Lin Feng was meditating and practicing alone in his room. Suddenly, a mysterious force interrupted his practice, which shocked him.

"This is..." Lin Feng opened his eyes and frowned.

At the same time, Li'er also felt something strange in her room. She stood up and walked to the window, looking at the moonlight outside, feeling a little uneasy.

The next day, Lin Feng and Li Er decided to explore the source of this mysterious power in the city. They walked through the streets and asked many residents in the city, but they did not get any useful clues.

Just when they were confused, an old man appeared in front of them. The old man had deep eyes, as if he saw through everything.

"Young man, what you are pursuing is not something that ordinary people can understand." The old man said slowly.

Lin Feng took a step forward and said respectfully: "I hope you can give me some advice, senior."

The old man smiled and said, "Follow me."

Lin Feng and Li Er looked at each other and decided to follow the old man. The old man took them to an ancient temple outside the city. The temple was dilapidated and surrounded by weeds.

"This temple may have the answers you want." After the old man said this, he turned and left.

Lin Feng and Li Er walked into the temple, which was filled with an old atmosphere. In the main hall of the temple, they found a strange mural. The mural depicted some mysterious symbols and scenes that made people puzzled.

"This mural seems to hide some mystery." Li'er said.

Lin Feng carefully observed the mural, and suddenly, a flash of inspiration came to his mind. He reached out and touched a symbol on the mural, and instantly, a powerful force swept them into a mysterious space.

In this space, everything is in chaos with only a faint light flickering.

"Li'er, be careful!" Lin Feng held Li'er's hand tightly.

They walked forward cautiously, and after an unknown amount of time, they finally saw a huge stone door. The door was engraved with complex patterns and emitted a mysterious light.

"The answer we are looking for may be behind this stone door." Lin Feng said.

They pushed the stone door open together, and a powerful force rushed towards them. Behind the door was a secret room filled with various magic weapons and secret books.

"It seems our chance has arrived." Li'er said excitedly.

However, just as they were about to obtain these magic weapons and secret books, a powerful barrier suddenly appeared in the secret room, blocking them out.

"This barrier is so powerful, how can we break through it?" Li'er asked anxiously.

Lin Feng pondered for a moment, "Don't worry, we will definitely find a way."

They began to look for clues to break through the barrier in the secret room. After some effort, Lin Feng finally found a weak point in the barrier.

"Lier, I will attack this weak point. You be ready to enter at any time." Lin Feng said.

Li'er nodded, and Lin Feng gathered all his strength and attacked the weak point. With a loud bang, a crack appeared in the barrier.

Li'er took the opportunity to pass through the crack and entered the secret room. She quickly picked up a secret book and handed it to Lin Feng.

Just as they were about to leave the secret room, a powerful guardian suddenly appeared in the secret room. The guardian was huge and exuded a terrifying aura.

"How dare you trespass here!" the guardian roared.

Lin Feng and Li Er did not flinch and started a fierce battle with the guardian. After a hard fight, they finally defeated the guardian and left the mysterious space with magic weapons and secret books.

Back in the real world, Lin Feng and Li'er discovered that their cultivation had improved significantly.

"I gained a lot from this ordeal." Lin Feng said.

Li Er smiled and nodded, "But the road to immortality is still long, we can't let down our guard."

They continued on their immortal journey and faced new challenges.