Genshin Impact.

During the exploration of the mysterious ruins, Lin Feng, the old man, Amber and Li'er noticed something strange in the surrounding atmosphere before their joy had completely faded after discovering the treasures.

In the originally quiet ruins passage, a layer of light mist began to fill the air. This mist carried a rotten smell that made people wary.

"Everyone be careful, this fog comes in a strange way." The old man frowned, and the magic weapon in his hand glowed slightly, ready to deal with possible dangers at any time.

Lin Feng tightly grasped the long sword in his hand, observing the surroundings with vigilant eyes, and the spiritual power in his body began to slowly circulate. Amber also pulled the bowstring to its full extent, and an arrow shining with spiritual power was placed on the string. Li'er formed seals with both hands and cast a defensive spell, covering everyone.

As they went deeper, the fog became thicker and thicker, greatly obstructing their vision. Suddenly, a low roar came from the depths of the fog, and the sound contained a powerful force that shook the walls of the ruins slightly.

"Oh no, there is indeed a guardian beast in this ruins." The old man looked solemn and warned loudly.

Before he finished speaking, a huge two-headed monster rushed out of the mist. Its body was as big as a hill, with its two heads spewing fire and frost respectively, and the scales on its body flashing with strange light.

Lin Feng flew forward without hesitation, swung the long sword in his hand and slashed at the monster. The sword energy collided with the monster's flames, making a loud noise, and the powerful impact made Lin Feng step back a few steps.

Seeing this, Amber shot the arrow in her hand like a meteor, accurately hitting one of the monster's eyes. The monster felt the pain, roared angrily, turned around and pounced on Amber.

Seeing this, the old man threw the magic weapon in his hand, which turned into a huge light curtain, blocking Amber. The monster hit the light curtain and was bounced back.

Li'er took the opportunity to cast a spell, and ice cones fell from the air and pierced the monster. The monster twisted its body to avoid the attack of the ice cones, and at the same time, a strong frost breath spewed out of its mouth, freezing Li'er's spell.

The four of them started a fierce battle with the monster. Lin Feng's swordsmanship was sharp, and each attack contained powerful spiritual power; Amber's arrows were extremely accurate, always able to cause damage to the monster at the critical moment; the old man's magic weapon was powerful, and he resisted the monster's attacks again and again; although Li'er's magic was restrained by the monster, she still kept looking for opportunities to interfere with the monster.

With the tacit cooperation of the four people, the monster gradually fell into a disadvantage. Its body was covered with wounds, and the ground was stained with blood. However, the monster did not give up. It suddenly roared to the sky, and the aura on its body began to surge wildly.

"Oh no, it's going to fight to the death!" the old man shouted.

The two heads of the monster spewed out a powerful force that was a fusion of fire and frost, sweeping towards the four people. The four people quickly used their strongest defense to resist this powerful force.

After a violent collision, the four were blown away by the powerful impact and fell heavily to the ground. They only felt the blood and qi in their bodies surging and their spiritual power was over-consumed.

At this moment, the monster pounced again. Lin Feng endured the pain, stood up, and the long sword in his hand shone again.

"Even if we die, we can't let it succeed!" Lin Feng said loudly.

The other three also stood up, their eyes revealing firm determination.

At this critical moment, a melodious bell sound suddenly rang out from the ruins. The bell sound echoed throughout the ruins. When the monster heard the bell sound, its body trembled slightly, and a trace of fear appeared in its eyes. Then, it turned and ran towards the depths of the ruins, disappearing into the mist.

The four of them breathed a sigh of relief and slumped to the ground.

"What's going on with this bell sound? Why is the monster scared?" Amber asked in confusion.

The old man thought for a moment and said, "There must be some secrets in this ruins that we don't know. Perhaps this bell sound is related to the core of the ruins."

"Anyway, let's take a break first, recover our spiritual power, and then continue exploring." Lin Feng said.

The four of them began to meditate on the spot to recover their spiritual power. After a while, their spiritual power recovered a little, so they stood up and continued to move towards the depths of the ruins.

As they went deeper, the fog around them gradually dissipated, and a huge palace appeared before them. The palace's door was closed, and some strange runes were engraved on the door.

"This should be the core of the ruins." said the old man.

Lin Feng walked forward and carefully observed the runes on the door. Suddenly, the runes flashed with light, and a powerful force bounced Lin Feng away.

"Be careful!" Amber ran over and helped Lin Feng up.

The old man walked forward, looked at the runes on the door, and said, "This is a powerful seal. We must find a way to break it before we can enter the palace."

The four began to look for clues around the palace, and after a careful search, they found a stone tablet on one side of the palace. The stone tablet was engraved with some solutions to the seal.

"So that's how it is." After reading the contents on the stone tablet, the old man had a clear idea in his mind.

The four people followed the instructions on the stone tablet and began to crack the seal. After some effort, the light of the seal gradually weakened and finally disappeared.

The palace door slowly opened, and a strong breath rushed in from inside. The four people walked into the palace carefully, and saw that the palace was filled with various precious magic weapons and secret books.

"These are priceless treasures!" Amber said excitedly.

However, just as they were about to collect the treasures, a mysterious figure appeared in the depths of the palace.

"Who is it?" Lin Feng asked vigilantly.

The mysterious figure slowly walked out of the shadows and revealed his true face. It turned out to be a man in a black robe with a wicked smile on his face.

"Do you think these treasures are so easy to get?" said the man in black robe.

"Who are you? Why are you here?" the old man asked.

The black-robed man smiled and said, "I am the guardian of this ruins. These treasures belong to me. You have trespassed into the ruins and wanted to steal the treasures. Don't even think about leaving alive today."

After saying that, a black staff appeared in the black-robed man's hand, with an evil light flashing on the staff.

A new battle is about to begin. Can Lin Feng and his four companions defeat the man in black robe and successfully obtain the treasures in the ruins?