Genshin Impact.

Lin Feng and Li'er followed the mysterious old man down to the mortal world to experience tribulations. The journey was full of changes, and many unknown challenges and opportunities were intertwined. They had just experienced a thrilling battle. In this battle, Lin Feng unexpectedly discovered that the fairy power in his body seemed to be suppressed in some way, and Li'er also realized that the surrounding environment had greatly hindered their practice.

"Master, why is this road to tribulation so difficult? And I feel that my strength is greatly restricted here." Lin Feng frowned and asked the old man.

The old man stroked his beard gently, his eyes revealing a deep light, and he slowly said: "The road of tribulation is full of variables. This is a test for you, but also an opportunity. Only by constantly breaking through in difficult situations can you find the true destiny of immortality."

Li'er nodded thoughtfully, her bright eyes looking into the distance, and she secretly made up her mind to make a breakthrough in this ordeal.

The three of them continued to move forward, and soon they arrived at an ancient town. Although the town looked very lively, Lin Feng keenly sensed a hint of something unusual.

"Everyone be careful, this town seems to be hiding some danger." Lin Feng said vigilantly.

The old man smiled and said, "Don't panic. Now that we are here, we should make the best of it. Let's find a place to stay first, and then slowly explore."

In the center of the town, there is a place called "Yue Lai Inn". The three of them entered the inn and asked for three upper rooms. In the room, Lin Feng looked through the window at the street outside, and his doubts grew stronger.

As night fell, a thick fog suddenly filled the streets of the town. Lin Feng decided to go out and check it out. Li Er followed him, worried about his safety.

The two walked forward cautiously in the thick fog, and suddenly heard a miserable cry. They walked in the direction of the sound and saw a little girl squatting on the street corner crying.

"Little sister, what's wrong with you?" Li'er walked up and asked softly.

The little girl raised her head, her face full of tears: "My parents are gone, I'm so scared."

Lin Feng looked around and found that the atmosphere around him was getting weirder. Suddenly, a group of black shadows came from all directions and pounced on them.

Lin Feng immediately drew his sword and started a fierce battle with the shadows. Li Er also cast a spell to help Lin Feng. With the tacit cooperation of the two, the shadows were gradually repelled.

However, just when they thought the crisis was over, a huge monster emerged from the ground. This monster was huge and exuded an evil aura.

"What kind of monster is this?" Li'er exclaimed.

Lin Feng held the sword tightly, his eyes revealing a determined look: "No matter what it is, we must defeat it!"

After saying that, Lin Feng flew up and rushed towards the monster. Li Er followed closely behind him. Under the fierce attacks of the two, the monster gradually lost the upper hand.

Just when the monster was about to be defeated, it suddenly roared and released a powerful force. This force knocked Lin Feng and Li'er away.

The two men fell heavily to the ground, with a trace of blood flowing from the corners of their mouths.

"Ahem... this guy is so strong." Lin Feng stood up with difficulty.

Li'er wiped the blood from the corner of her mouth and said, "We can't give up!"

At this moment, the old man suddenly appeared in front of them, holding a staff with a mysterious light flashing on it.

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

The old man smiled and said, "Let me lend you a hand."

The old man waved his staff and cast a powerful spell at the monster. Under the attack of the spell, the monster howled in pain and then turned into a wisp of black smoke and disappeared.

"Master, you are so awesome!" Lin Feng said admiringly.

The old man shook his head and said, "This is just a small test. There is still a long way to go."

After this battle, Lin Feng and Li Er realized that they still had a long way to go in this process of descending to the mortal world. However, they were not afraid because they had firm beliefs and determination to pursue immortal fate.

The next morning, the three left the town and continued on their journey. They passed through a dense forest, crossed a turbulent river, and finally came to a mysterious valley.

The valley was filled with a strong spiritual energy, and the surrounding peaks towered into the clouds. Lin Feng felt that he might be able to find an opportunity for a breakthrough here.

"Master, the spiritual energy here is so rich, maybe it will help our practice." Lin Feng said.

The old man nodded and said, "Yes, but this place is also full of dangers. We must be careful."

The three of them entered the valley carefully, and saw all kinds of exotic flowers and plants growing in the valley, as well as some strange creatures that they had never seen before.

Suddenly, a huge python jumped out from the bushes and pounced on them. Lin Feng and Li'er reacted quickly and fought a desperate battle with the python.

In the fierce battle, Lin Feng gradually comprehended some new magic skills, and his strength was further improved. Li'er also constantly broke through herself in the battle, and her magic became more sophisticated.

After a hard fight, they finally succeeded in defeating the python. However, before they had time to rest, another group of ferocious monsters attacked them.

Facing the endless stream of enemies, Lin Feng and Li Er did not retreat at all. They cooperated with the old man and resolved the crisis time and time again.

During the battle, Lin Feng and Li Er's tacit understanding became stronger and stronger, and their hearts seemed to be connected. They trusted each other, supported each other, and faced challenges together.

After several days of fighting, the three finally found a mysterious cave in the valley. A strange light flickered in the cave, and it seemed that something important was hidden.

"This cave may contain the opportunity we have been looking for." said the old man.

Lin Feng and Li'er looked at each other, then followed the old man into the cave. The cave was filled with a mysterious atmosphere, and various runes flashed on the walls.

The three of them walked slowly along the cave passage, and suddenly, a powerful barrier appeared in front of them.

"The power of this barrier is so strong, how can we break through it?" Li'er asked.

The old man pondered for a moment and said, "Let me study the flaws of this barrier."

The old man carefully observed the barrier, and then began to cast a spell to break it. After some effort, the barrier was finally opened.

The three of them walked into the space behind the barrier, and saw an ancient book inside. The book exuded a powerful fairy power.

"Is this our chance?" Lin Feng said in surprise.

The old man walked forward, picked up the scroll, and began to read it carefully. As the old man read, the words on the scroll gradually turned into rays of light and merged into Lin Feng and Li'er's bodies.

Under the illumination of this light, Lin Feng and Li Er felt that their strength had made a qualitative leap. Their immortal power became purer and their spells became more powerful.

"The harvest this time is really not small." Lin Feng said excitedly.

Li'er also smiled and nodded, saying, "Yes, with this breakthrough, we have one more guarantee on our road to tribulation."

However, they didn't know that even greater challenges were yet to come...