Genshin Impact.

After going through all kinds of hardships, Lin Feng and Li Er are still wandering on this long immortal journey. Their journey through the mortal world is becoming more and more difficult, and the road ahead seems to be shrouded in heavy fog.

At this moment, they were in an ancient town, and the surrounding scenery exuded a mysterious and unfamiliar atmosphere. Lin Feng frowned, thinking about the next step in his heart. Li'er quietly accompanied him, her eyes full of determination and trust.

"Brother Lin Feng, no matter how many difficulties and obstacles lie ahead, I will face them with you." Li'er said softly.

Lin Feng nodded slightly and held Li'er's hand tightly: "Don't worry, Li'er, I will never let you get hurt."

At this moment, a mysterious old man appeared in front of them. The old man had deep eyes, as if he knew everything in the world.

"Young man, your journey to immortality is full of ups and downs, but this is also the arrangement of fate," the old man said slowly.

Lin Feng bowed respectfully to the old man: "Please give me some pointers, senior."

The old man smiled and said, "Deep in this town, there is a mysterious cave. Perhaps there is the answer you are looking for."

Upon hearing this, Lin Feng and Li'er walked towards the depths of the town without hesitation.

They passed through the narrow streets, avoided various traps and obstacles, and finally arrived in front of the cave. The door of the cave was closed, and there was a strong fluctuation of immortal power around it.

Lin Feng took a deep breath, circulated the immortal power in his body, and tried to push the door open. However, no matter how hard he tried, the door remained motionless.

Seeing this, Li'er also used her own magic to work together with Lin Feng. With their unremitting efforts, the door finally slowly opened.

An ancient and mysterious atmosphere came to their faces, and the two carefully walked into the cave. The cave was filled with all kinds of strange runes and magic weapons, which made people dazzled.

Lin Feng carefully observed his surroundings, trying to find useful clues. Suddenly, a beam of light shot out from the runes on the wall and flew straight towards Li'er.

Lin Feng was quick-witted and stood in front of Li'er in an instant, using his own body to withstand the impact of the light.

"Brother Lin Feng!" Li'er exclaimed.

Lin Feng gritted his teeth and persevered, the immortal power in his body circulated wildly, resisting the power of the light.

Just when he was about to collapse, the light gradually dissipated, and he fell into a coma due to his serious injuries.

Li Er was extremely worried and rushed to treat Lin Feng's injuries. With her efforts, Lin Feng's injuries gradually stabilized.

When Lin Feng woke up, he found himself in a strange space and the scene around him kept changing.

"Where is this?" Lin Feng asked puzzledly.

At this moment, a voice sounded in his ears: "This is your inner world. Only by breaking through yourself can you find the true path to immortality."

Lin Feng fell into deep thought and began to examine his own heart.

Meanwhile, Li'er continued to explore the cave, and she found an ancient secret book, which recorded a powerful immortal method, but the process of practicing it was extremely difficult.

Li'er decided to practice this magic without any hesitation to help Lin Feng break through the predicament.

After a long period of practice, Li'er finally mastered the essence of immortality, and Lin Feng also broke through himself in his inner world and gained new strength.

When they met again, both of them emanated powerful immortal energy.

However, before they could be happy, a powerful evil force suddenly appeared in the cave, trying to devour their immortal power and trap them here forever.

Lin Feng and Li'er fought side by side in a thrilling battle with the evil forces.

During the battle, they supported each other, cooperated well, and gradually gained the upper hand.

Eventually, they successfully defeated the evil forces and found a way to leave the cave.

After leaving the cave, Lin Feng and Li'er continued on their journey to immortality. They knew that there were more challenges waiting for them, but their faith had never been so firm.