Genshin Impact.

Under the guidance of the old man, Lin Feng and Li Er embarked on a journey to the mortal world. At this moment, they were in a strange land, surrounded by a mysterious atmosphere.

Lin Feng observed the surrounding environment vigilantly, his heart filled with anxiety and anticipation for the unknown. Li'er followed closely beside him, with a look of determination in her eyes.

"Brother Lin Feng, where should we go next?" Li'er asked softly.

Lin Feng pondered for a moment and said, "Since it is a tribulation, there must not be a clear direction. We follow our hearts and perhaps we can find our own opportunity in this world."

The two walked side by side and soon arrived at a prosperous town. The streets were bustling with people. Lin Feng and Li'er looked at everything curiously, which was completely different from the fairyland they were familiar with.

However, before they could adapt to the hustle and bustle of this world, a sudden change occurred.

The sky was suddenly covered with dark clouds, lightning and thunder. Strong winds whistled past, stirring up clouds of dust. The originally bustling streets were instantly plunged into chaos, and people ran everywhere.

Lin Feng frowned, and a bad feeling welled up in his heart. "Li'er, be careful!" He pulled Li'er behind him.

At this moment, a black shadow swooped down from the dark clouds and rushed towards them. Lin Feng quickly drew his sword and faced the black shadow.

After a fierce battle, Lin Feng finally saw clearly that the black shadow was actually a ferocious monster. The monster bared its fangs and claws, emitting a powerful aura.

Li Er also used magic to fight against the monster together with Lin Feng. After a hard fight, they finally repelled the monster.

But the town was in ruins at this time, and people's cries and shouts echoed in the air.

Lin Feng and Li Er felt guilty and decided to help the town restore its former peace. They rushed around to treat the wounded and rebuild houses.

In the process, they met a young man named Aqiang, who admired their heroic deeds and expressed his willingness to help them survive better in the world.

"This world is full of suffering, but also endless warmth." Li'er said with emotion.

Lin Feng nodded, "It is these experiences that may make our immortal path more solid."

As time went by, Lin Feng and Li Er became more and more famous in the world. However, their actions also aroused the jealousy and resentment of some lawless people.

One night, when Lin Feng and Li'er were resting, they were suddenly surrounded by a group of men in black.

"You have ruined our good deeds. Today is the day you die!" said the leader of the men in black viciously.

Lin Feng and Li'er were not afraid at all and fought a desperate battle with the enemy again.

But this time, the enemy's strength was far beyond their imagination. Lin Feng and Li'er gradually fell into trouble and suffered multiple injuries.

Just when they felt desperate, the mysterious old man suddenly appeared. With a flick of his sleeves, the man in black was instantly repelled.

"Your training is not over yet, so don't take it lightly." After the old man said this, he disappeared again.

Lin Feng and Li'er looked at each other and became more determined to survive in this world.

They continued to move forward, passing through countless mountains and rivers, and witnessing the joys and sorrows of the world.

By chance, they learned about a mysterious valley. It is said that there are treasures hidden in the valley that can improve cultivation.

Lin Feng and Li Er headed towards the valley without hesitation. The valley was full of various traps, but they resolved them one by one with their mutual trust and tacit understanding.

Finally, they found the treasure deep in the valley. However, just as they were about to obtain it, a powerful barrier suddenly appeared.

"If you want to get the fairy treasure, you must pass my test." An ethereal voice sounded.

Lin Feng and Li'er did not back down and resolutely accepted the test.

During the test, they need to face their deepest fears and desires. Lin Feng sees his past failures and setbacks, while Li Er sees his excessive desire for power.

But in the end, with their firm belief and love for each other, they overcame their inner demons, successfully passed the test, and obtained the fairy treasure.

With the fairy treasure, Lin Feng and Li'er set out on their journey home. They knew that this trip down to the mortal world had not only improved their cultivation, but also helped them grow spiritually.

And their immortal journey will become more glorious because of this experience.