Genshin Impact.

Under the guidance of the old man, Lin Feng and Li Er started their journey to the mortal world. They devoted themselves to the mortal world, trying to find the opportunity to sublimate their immortal fate through the experience of this mortal world.

When they first entered the mortal world, everything was full of novelty and unknown to them. The hustle and bustle of the mortal world and the warmth and coldness of human feelings were completely different from the fairyland they once lived in. Lin Feng and Li'er relied on each other and groped their way forward in this vast mortal world.

They came to a small town called Qingyun. Although the town was not big, it was bustling with people coming and going. In order to better integrate into the world, Lin Feng and Li'er transformed themselves into ordinary mortals and found a place to live in the city to settle down.

One day, Lin Feng and Li'er were strolling in the city and accidentally heard a legend about a mysterious valley outside the city. It is said that there are often strange lights flashing in the valley, and mysterious sounds are heard. Some people say that it is a treasure left by immortals; others say that it is the entrance to another world. Lin Feng and Li'er looked at each other and understood in their hearts that this might be the opportunity for them to experience this tribulation.

So, the two decided to go to the mysterious valley to find out. They walked along the rugged mountain road and encountered many difficulties and obstacles along the way. The steep slopes, rushing streams, and wild animals hidden in the grass all posed great challenges to their progress.

However, Lin Feng and Li Er relied on their immortal skills and strong will to overcome these difficulties one by one. Finally, they came to the entrance of the mysterious valley.

At the entrance, there was a layer of light mist, making it difficult to see the scenery inside. Lin Feng walked cautiously in front, and Li'er followed closely behind. Walking into the valley, they found that the scenery here was completely different from the outside world. There were all kinds of exotic flowers and plants growing in the valley, as well as some strange creatures they had never seen before.

Suddenly, a huge python jumped out from the bushes and pounced on them with its bloody mouth wide open. Lin Feng was quick-witted and gathered his magic in his hands. A flash of light passed by and the python was pushed back several feet. However, the python did not give up the attack. It twisted its body and pounced on them again.

Seeing this, Li Er used the magic in her hand, and an ice wall appeared in front of them, blocking the python's attack. The python hit the ice wall, making a dull sound. Taking this opportunity, Lin Feng launched another attack, and the magic in his hand turned into a sharp sword and stabbed at the python.

After a fierce battle, the python was finally defeated by them. However, before they could catch their breath, a low roar came from the valley. A huge white tiger slowly walked in from the depths of the valley. The white tiger exuded a powerful aura, which made Lin Feng and Li'er feel a huge pressure.

"Be careful, this white tiger is very powerful, we must not underestimate the enemy." Lin Feng reminded.

Li'er nodded, gathered the magic in her hand, and prepared to meet the attack of the white tiger. The white tiger took vigorous steps and rushed towards them quickly. Lin Feng and Li'er cooperated with each other and started a life-and-death contest with the white tiger.

In the fierce battle, Lin Feng and Li Er gradually found the weakness of the white tiger. They concentrated their strength and attacked the weakness of the white tiger. Finally, the white tiger fell to the ground under their attack.

After defeating the white tiger, Lin Feng and Li Er continued to explore the valley. They found an ancient cave deep in the valley. The door of the cave was closed, but there were some strange runes engraved on the door.

Lin Feng and Li'er studied the runes carefully, trying to find a way to open the cave door. After some effort, they finally cracked the secret of the runes and opened the cave door.

Walking into the cave, there was an ancient atmosphere. On the walls of the cave, there were some ancient immortal secrets and cultivation experiences engraved. Lin Feng and Li'er felt like they had found a treasure and began to study it seriously.

During the research, Lin Feng and Li Er had a deeper understanding of the immortal method. Their cultivation was also improved unconsciously. However, just as they were immersed in the joy of cultivation, a violent vibration suddenly occurred in the cave.

A black shadow rushed out from the depths of the cave and rushed towards them. Lin Feng and Li'er looked closely and found that it was a powerful demon cultivator. The demon cultivator exuded a strong demonic aura and his eyes flashed with evil light.

"It turns out that you are two ignorant little kids who dared to break into my cave. Today, you will all die here!" The demon cultivator sneered.

Lin Feng and Li'er were not afraid at all, and used their magic to start a fierce battle with the demon cultivator. The demon cultivator was powerful and his magic was strange, and for a while, Lin Feng and Li'er were in trouble.

Just when they were about to collapse, the old man suddenly appeared in the cave. The old man waved his magic, a powerful light flashed, and the demon cultivator was pushed back several feet.

"Master!" Lin Feng and Li'er shouted in surprise.

The old man looked at them, smiled and said, "You did a good job, but this demon cultivator is very powerful, you are no match for him. Leave the rest to me."

The old man and the demon cultivator started a fierce battle. The old man used his magic like a god descending from heaven, and the demon cultivator gradually lost the upper hand under the old man's attack.

In the end, the old man used a powerful magic to completely defeat the demon cultivator.

"Lin Feng, Li'er, you have gained a lot from this experience in the Immortal Secret Realm. However, your journey to immortality is still long and you need to keep working hard." said the old man.

Lin Feng and Li'er nodded. They knew that this experience was just the beginning and there would be more challenges waiting for them in the future.

Under the guidance of the old man, Lin Feng and Li Er left the mysterious valley and continued their journey to immortality. They believed that as long as they persevered, one day they would be able to become true immortals and master their own immortal fate.