Genshin Impact.

Under the guidance of the old man, Lin Feng and Li Er embarked on a journey to the mortal world to experience tribulations. After experiencing all kinds of twists and turns on their journey back to their hearts, they were full of expectations and uneasiness about the future.

They landed in a bustling town, full of people coming and going, full of life. Lin Feng looked around curiously, while Li'er followed closely beside him, with a hint of caution in her eyes.

"Lin Feng, we have to be careful. The rules of this mortal world are very different from those of the fairy world." Li'er said softly.

Lin Feng nodded, "Don't worry, Li'er, we will take care of each other."

They began to look for a place to stay in the town and finally settled in an inn. However, before they could catch their breath, trouble came.

It turned out to be a group of local hooligans who had evil intentions when they saw Li'er's outstanding appearance. They surrounded the door of the inn and shouted at Li'er to get out.

Lin Feng stepped forward and said, "You bunch of scoundrels, stop messing around!"

Seeing this, the hooligans burst into laughter, "Boy, you think you can be a hero and save the damsel in distress?"

Lin Feng was not afraid at all, and used his magic to instantly knock down the leading thugs to the ground. The others saw this and fled in all directions in fear.

Li'er said worriedly: "Lin Feng, if you expose your magic like this, I'm afraid it will cause unnecessary trouble."

Lin Feng realized his impulsiveness and said, "I didn't think it through. We need to leave here as soon as possible."

So they hurriedly left the town and headed towards the remote mountain village.

In the mountain village, they met a kind old farmer who warmly invited them to his home and told them about some strange phenomena in the village.

It is said that on every full-moon night, strange noises can be heard from the valley near the village. Many villagers have gone to explore, but have never returned.

Lin Feng and Li Er decided to help the villagers solve this mystery. On a full moon night, they quietly came to the valley. They saw a thick fog in the valley, which was eerie and scary.

They moved forward cautiously, when suddenly, a strong wind blew, carrying countless black shadows in the wind.

Li'er exclaimed: "Is this an evil spirit?"

Lin Feng said calmly: "Don't be afraid, we will deal with it together."

They joined forces to perform magic and started a fierce battle with the evil spirit. After a hard fight, they finally drove away the evil spirit.

Just as they were about to leave the valley, they discovered a mysterious cave. A strange light flashed in the cave, attracting them to go in.

Inside the cave, there was an ancient secret book. Lin Feng picked up the secret book, and the words on it were obscure and difficult to understand.

Just then, a mysterious old man appeared in front of them.

The old man looked deep in his eyes, "This secret book was left by an ancient immortal. Only those who are destined to know it can unlock its mysteries."

Lin Feng and Li'er looked at each other and decided to follow the old man's guidance to explore the secrets of the secret book.

With the help of the old man, they gradually comprehended the true meaning of the immortal method in the secret book. However, this also attracted the covetousness of some people with ill intentions.

One day, a group of men in black suddenly attacked the place where they were. Lin Feng and Li Er fought hard, but the men in black were too powerful and they gradually fell into trouble.

At the critical moment, the old man stepped forward and used powerful magic to repel the man in black.

"Children, your experience is far from enough. The world is full of temptations and dangers, and you must continue to strengthen yourselves." The old man said earnestly.

Lin Feng and Li'er were deeply touched. They understood that the path to immortality is long and only by moving forward can they truly control their own destiny.

After that, they continued to experience the world, helping those in need while also constantly improving their own cultivation.

By chance, they learned a secret about the fairy world. It is said that there is a mysterious fairy island in a distant place, and the magic weapon that can break through the bottleneck of cultivation is hidden on the island.

Lin Feng and Li'er decided to embark on a journey to find the fairy island and meet new challenges and opportunities.