Genshin Impact.

Lin Feng looked at the mist in front of him, and his worries grew heavier. The old man beside him had a solemn expression, but his eyes were shining with determination.

"Senior, this fog is strange and unpredictable. What should we do?" Lin Feng frowned and asked the old man.

The old man stroked his beard and said after thinking for a moment: "This fog must have its source. We need to find the key to break through."

At this time, Amber and Li'er also came forward. Amber said, "I think we can't act blindly. Maybe we should observe the pattern of this fog first." Li'er nodded in agreement, "Yes, and the surrounding environment may also give us some clues."

Everyone decided to observe and explore the edge of the fog first. They walked carefully, paying attention to everything around them. Lin Feng suddenly discovered that there seemed to be some faint light and shadow flickering in the fog.

"Look at those lights and shadows. They might be the key to solving the mystery." Lin Feng said, pointing at the lights and shadows.

The old man stared at the lights and shadows and said slowly: "Perhaps these lights and shadows are energy fluctuations from some kind of formation. Let's look for them in the direction of their source."

So, they slowly moved forward in the direction of the light. Along the way, the pressure in the fog became greater and greater, as if an invisible force was preventing them from moving forward. But the people did not retreat, and the faith in their hearts supported them to continue moving forward.

After walking for a while, they came to an ancient stone tablet. The stone tablet was engraved with strange runes, and the light and shadows were emitted from the stone tablet.

"There must be something wrong with this stone tablet." Amber said, and walked forward to check the runes on the stone tablet.

However, when his hand just touched the stone tablet, a powerful force pushed him away. The old man hurriedly said, "Be careful, there is a powerful restriction on this stone tablet."

Lin Feng carefully observed the runes on the stone tablet, trying to decipher their meaning. After some effort, he discovered that these runes seemed to be an ancient sealing formation.

"I think I know what's going on." Lin Feng said, "This fog is caused by the sealing formation being triggered. We must find a way to break the seal in order to dispel the fog."

The old man nodded and said, "You make sense. So how do we break this seal?"

Lin Feng thought for a moment, then said: "I have seen a similar sealing formation in an ancient book. Perhaps we can try to use our spiritual power to inject it into these runes in a specific order."

Everyone decided to try Lin Feng's method. They all circulated their spiritual power and injected it into the runes on the stone tablet. As the spiritual power was injected, the stone tablet began to emit a strong light, and the runes also flashed with strange light.

With everyone's efforts, the seal gradually loosened. Suddenly, a strong light flashed, and the seal was successfully cracked. At the same time, the diffuse fog began to dissipate rapidly.

When the fog completely dissipated, everyone found themselves in a mysterious valley. The valley was surrounded by high mountains, with a clear stream in the middle. Next to the stream, there was an ancient cave.

"It seems this is the place we are looking for." said the old man.

Everyone walked into the cave carefully. There was a mysterious atmosphere in the cave, and the walls were engraved with ancient patterns and words. Lin Feng carefully observed these patterns and words, trying to find some useful information from them.

Suddenly, Lin Feng found a map of treasures, which marked the location of the treasures and the method to open them.

"Great, we finally found the clue to the treasure." Lin Feng said.

Following the instructions on the map, everyone came to the place where the treasure was. However, around the treasure, there were all kinds of traps.

"Everyone be careful, these traps are very dangerous." Amber warned.

Lin Feng carefully observed these traps and thought about how to crack them. After some research, he discovered the rules of the traps and successfully cracked them.

When the trap was cracked, the door to the treasure room slowly opened. Everyone walked into the treasure room and saw that it was filled with various precious treasures and secret books.

"These treasures and secret books will be of great help to our cultivation." Li'er said excitedly.

Everyone began to select the treasures and secret books they needed. Lin Feng found an ancient cultivation secret book, the old man got a powerful magic weapon, and Amber and Li'er also gained a lot.

Just as they were about to leave the treasure room, a group of mysterious men in black suddenly appeared and attacked them without saying a word.

"Everyone be careful!" Lin Feng shouted loudly.

Everyone immediately entered the battle state and started a fierce fight with the man in black. Lin Feng used his unique skills to attack the man in black with powerful spiritual power. The old man was not to be outdone, and the magic weapon in his hand exerted a powerful force, repelling the man in black one after another.

With the concerted efforts of everyone, the men in black were gradually defeated and eventually fled the scene.

"Who are these men in black? Why are they here?" Amber asked puzzledly.

The old man thought for a moment and said, "I think they must be here for this treasure. It seems we have to be careful next time."

They left the valley with the treasure. This experience brought them a lot of gains and made them more determined to move forward on the path of cultivation.