"Why is it so quiet?" Jia Yan looked in the direction of the mountain and asked in confusion.
"It seems that we are doomed." Xiao Wei sighed.
"I will go back and take a look," Jia Changfeng said and ran toward the mountain.
"Let's go together. Be careful. Don't disturb those evil goblins." Xiao Lingfeng followed him.
The four of them once again returned to a position closer to the mountain, but what they saw left their mouths agape for a long time.
The ground was covered with the corpses of evil goblins. Blood was flowing like rivers, and bones were piled up like mountains. The white sand was dyed dark red by the poisonous blood.
Half of the giant evil bone demon king's body was already rotten, but it was still so shocking that people were speechless.
"He killed them all..." Jia Changfeng said, dumbfounded.
"Who is he?" Xiao Lingfeng thought to himself with a complicated expression.
For a person to be able to do this, it was simply impossible to imagine what kind of methods he had used.
"Where is Han Sen?" Jia Yan and Xiao Wei came back to themselves and looked around, but they did not see Han Sen.
Xiao Lingfeng and Jia Changfeng also looked around, but they did not see Han Sen either. The four of them had mixed feelings.
They thought they had just met an ordinary passerby, but this passerby shocked them so much that they could not calm down for a long time.
At this time, Han Sen had already rushed into the belly of the black mountain. There were many caves in the black mountain, like a huge maze.
Han Sen asked the holy angel to lead the way, following the blood stains left by the evil goblin king.
After a while, they still could not catch up with the evil goblins. If it were not for the poisonous blood in the stone path, Han Sen would have thought that he was going in the wrong direction.
"This guy is quite fast at digging holes."
Han Sen ordered the adiraid to continue following the trail of blood. He had already put on the super pet armor on the adiraid. The adiraid was almost immortal in First God's Sanctuary, so there was nothing to be afraid of. She could fight anyone she wanted, no matter where she went.
After three or four hours of chasing, the stone path in front of them suddenly opened up. They came to a huge cylindrical cave.
The cylindrical cave was like the interior of a bell tower. There was an open space above, which was at least a few hundred meters wide. There were many holes in the walls.
The blood stains of the evil goblin king had disappeared. Han Sen looked at the countless holes in the walls and frowned. Without the blood stains, it was almost impossible to find the evil goblin king.
Han Sen lit a torch and shone it around the cave. Suddenly, he saw an alloy box in the corner of the cave.
"Someone has been here!"
Han Sen was surprised. The box was a product of the Alliance, and it was a high-class product. It was Z-steel, but it was different from ordinary Z-steel. Aside from its hardness and toughness, it was also very portable. It was much lighter than the Z-steel alloy used in weapons and armor.
The box was a little deformed, as if it had been hit by something with great force. There was already a hole in the box. The top of the box was covered with dust and some dark spots. It was unknown what had dried up and stuck to the box. It was unknown how many years it had been there.
Han Sen looked at the style of the box. It seemed to be advanced, but the style was a bit old. It was not made in recent years.
"With the evil goblins here, who could have come here? Or is there another entrance in the mountain?" Han Sen squatted and looked at the alloy box carefully.
Although there was a crack, it was so narrow that Han Sen could barely see what was inside. It was dark and there seemed to be something inside.
Although modern technology was useless in God's Sanctuary, Han Sen did not dare to be careless. He stepped back and asked the holy angel to open the box.
The holy angel was very violent. She put her hands into the crack, clasped the top of the box with one hand and the lid with the other, and opened the box immediately.
Nothing strange happened. There were three bottles and a small crystal card in the box.
"Geno fluid?" Han Sen looked at the three bottles and was slightly surprised.
Han Sen had seen this bottle many times before. It was the geno fluid that was used to practice advanced hyper geno arts. It was a special bottle, and it had not been changed in the past few decades. So, there was no mistaking it.
However, although there were three bottles of geno fluid in the box, only one of them was filled with purple geno fluid. The other one was empty, and the last one was broken.
Han Sen took out the bottle of geno fluid from the box and looked around, but did not find any label.
Normally, geno fluid bottles would be labeled with which hyper geno art it came from. But this bottle had no words or symbols on it, and there was not even a symbol on it.
Han Sen looked at the empty bottle and the broken bottle, but they were the same. There were no words or markings on them.
"Is it geno fluid or not?"
Han Sen frowned. He reached out his hand and picked up the small crystal card. He put it in his palm and looked at it carefully.
It was a memory crystal card, which did not seem to be damaged. However, there was no way to check the card in God's Sanctuary, so Han Sen had to put the card and the bottle away for the time being.
He looked around again, but didn't find any skeletons, nor were there any carvings or messages. He didn't know how the box ended up here.
Han Sen walked around the cave and found nothing else. He did not want to let the evil goblin king get away, which made him very upset.
However, there were too many caves here, and there was no trace of blood. He did not know where the evil goblin king went. Even if he wanted to chase it, there was no direction.
When Han Sen was hesitating whether to leave or not, he suddenly felt that the big cave seemed to shake. Then he heard a rumbling sound coming from somewhere.
As the sound got closer and closer, it became louder and louder. With the reflection of the cave, the sound was like thunder, which was very scary.
"What is it?"
Han Sen tried to listen, trying to identify the source of the sound. But because the sound was being reflected so much, he couldn't tell where it was coming from. He was surrounded by echoes, and he couldn't tell where it was coming from.
However, Han Sen was sure that something was coming to the big cave, and judging from the sound, it seemed to be a big guy.