Genshin Impact.

After going through many tests, Lin Feng and Li Er continued to train in the mortal world. One day, they came to an ancient city.

The city was bustling with activity, but Lin Feng keenly sensed something was amiss. Li'er also frowned, as if she had noticed something.

"Brother Lin Feng, I always feel that there is a mysterious atmosphere in this city." Li'er said softly.

Lin Feng nodded, "Be careful."

They were walking in the city when they heard a commotion. It turned out that a crowd of people gathered in front of a shop.

Lin Feng and Li'er took a closer look and saw an old man arguing with the shop owner.

"You are clearly committing fraud! How could this treasure be worth this price!" the old man said angrily.

The shop owner sneered: "Buy it if you want, or not, that's the market."

Lin Feng went forward and asked the reason. It turned out that the old man had taken a fancy to a treasure that was said to enhance his magic power, but the shop owner asked for an exorbitant price.

Lin Feng carefully observed the treasure and discovered a secret hidden in it.

"Boss, your treasure has defects and is not worth the price." Lin Feng said.

The shop owner's face changed, "Nonsense!"

At this moment, a strong wind suddenly blew and the sky suddenly became dark.

"Oh no, something's happening!" Lin Feng shouted.

Everyone panicked and fled in all directions.

Lin Feng, Li'er and the old man did not panic. They decided to deal with this sudden change together.

In the strong wind, a group of dark shadows appeared and rushed towards them.

Lin Feng drew out his sword and started fighting with the shadow, while Li'er cast a spell to help Lin Feng.

The old man was not to be outdone, and he waved the cane in his hand, emitting powerful force.

After a fierce battle, the black shadow was finally repelled.

However, before they could catch their breath, the ground began to shake violently.

"What is going on?" Li'er asked.

The old man pondered for a moment and said, "I'm afraid this has something to do with that treasure."

They returned to the shop and examined the treasure again.

At this moment, the treasure suddenly emitted a ray of light, enveloping them.

When the light disappeared, they found themselves in a mysterious space.

The space was filled with thick fog, making it difficult to tell the direction.

Lin Feng walked forward cautiously and suddenly heard a scream.

"It's the old man's voice!" Li'er exclaimed.

They hurriedly ran towards the direction of the sound and saw the old man lying on the ground, unconscious.

"There must be some trap!" Lin Feng said.

They continued to explore this mysterious space and discovered some strange runes and patterns.

Li'er tried hard to decipher these runes, "It seems to be an ancient seal."

Just then, a huge monster emerged from the fog and attacked them.

Lin Feng and Li'er fought with all their might, but the monster was too powerful and they gradually fell into a disadvantage.

At the critical moment, Lin Feng suddenly comprehended a new spell and his power increased greatly.

With their joint efforts, they finally defeated the monster.

As the monster fell, the mysterious space began to collapse.

They took the unconscious old man and desperately searched for an exit.

Finally, they escaped before the space completely collapsed.

Back to reality, the old man also woke up.

"Thank you, young men," the old man said gratefully.

After this incident, Lin Feng and Li'er gained new insights into the path to immortality.

They continue to move forward to meet more challenges and opportunities.

On a mountain, they came across the remains of an immortal.

The ruins are filled with various mechanisms and puzzles.

Lin Feng and Li'er solved them one by one with their wisdom and courage.

Deep in the ruins, they found a secret book left by an immortal.

The secret book records a powerful magic.

Lin Feng and Li'er began to practice diligently.

However, the cultivation process was not smooth and they encountered many difficulties.

But they did not give up, they encouraged and supported each other.

Finally, they successfully mastered this magical technique.

At this time, they received a call from the fairyland.

It turned out that a major change had occurred in the fairy world and they were needed to go back.

Lin Feng and Li'er set out on their journey home without hesitation.

Returning to the fairyland, they found the situation very serious.

A huge immortal calamity is about to come.

Lin Feng and Li'er stepped forward and decided to fight to protect the fairyland.

During the immortal calamity, they experienced countless life and death tests.

But they always stick to their beliefs and never back down.

In the end, they successfully survived the immortal calamity and saved the immortal world.

The names of Lin Feng and Li'er became legends in the fairy world.

Their immortal journey has become even more brilliant and glorious because of this.