Although the water looked a little dead, there were probably no living beings left. But the cold lingered in his heart.

Lin Jin walked around the small path a few times and realised that there were also a few iron chains hanging on the walls of the pond.

Every metal ring that formed this chain was almost the size of his fist and looked very thick. He thought for a long time as he walked to the side. Finally, he couldn't hold back his curiosity anymore. He carefully grabbed one of them and pulled it up with all his strength.

The iron chain brushed against the stone path beside the pool, and a "clang" sound was heard.

At the same time, huge bubbles began to bubble up from the pool, making the sound of bubbles popping.

After pulling on it for a while, Lin Jin used his left hand to forcefully hold onto the iron chain to prevent it from falling. His right hand held onto a small section of the iron chain to weigh it in his hand, and only felt that the iron chain was extremely heavy, and was at least two to three times heavier than ordinary iron.

Moreover, when he observed the chain in his hand, he found that the hardness of the chain was extremely high. Even the rust on the chain could not be removed easily. However, every bite point between the two iron chains was somewhat deformed, as if it had been pulled by a powerful force, making it seem very straight.

But with the hardness of these chains, how much force did it take to straighten them? He looked at the other chains with shock. The chains were similar to the one on his hand, either light or heavy, with traces of being straightened.

This degree of stretching was definitely not due to the gravity of the chains themselves. When he thought about the terrifying paw prints on the walls of the pool, Lin Jin was immediately shocked.

A chill went down his spine as he subconsciously looked up and saw three ancient seal characters standing at the top of the cave entrance.

Faintly, one could distinguish the word that appeared before Chinese's eyes the most: "Dragon!"

After he saw all of this, a record that even he could not believe appeared in his mind:

"In the past, there was Uncle An and Father Dong, but in reality, they were excellent dragons. They were able to beg for food and drink, and even more dragons returned to them. It was to disturb the dragon in order to serve Emperor Shun. The Emperor bestows upon you the surname of "Dong" and "Long". "

Thinking of the names "Dragon Gorge" and "Longquan cave", a wave of dizziness that overturned common sense immediately rushed into his mind.

"This thing, could it be that the ancients deliberately created it to fool me?" An extremely absurd feeling suddenly rose in Lin Jin's heart.

Ever since he was young, others had told him that dragons were non-existent divine creatures created by ancient people. It was impossible for them to appear in reality. Even when he was young and watched his favorite TV show, "Dragoneer", he had never treated dragons as real existences.

But now that he saw so many incredible things, his mind was in a daze. His entire mind was filled with all kinds of records of dragons.

Was a dragon really just a divine object created from an ancient fantasy?

The ancient seal character was a type of writing that was very similar in shape. To the left of the dragon was a person that was dancing and dancing, while on the right was a dragon. What kind of relationship was man and dragon?

He stood there in a daze for who knows how long. A cold wind blew, and Lin Jin felt a chill beneath his body, causing him to suddenly wake up.

"Red carp! What's the point of thinking so much? Whether or not they exist, it's better to find a way out first. " At this time, he realized that he still hadn't gotten out, but he had been standing here daydreaming for a long time. At this point, he quickly tossed these random thoughts away and began to look for an exit. He did not believe that this place would only have the one passage that led in.

But after searching for a long time, other than the hole he came in, there was no other hole the size of a palm.

The sky was getting darker. Was he going to spend the night here? Looking at the sky above his head which was gradually turning gray, Lin Jin felt a burst of irritation.

Just as he was feeling depressed, another gust of cold wind blew past him, causing his butt to turn cold.

"Where did this wind come from?" As long as there was wind, there would be a hole. Lin Jin was immediately startled, sensing the direction that the wind came from, and started to search carefully.

He followed the chill on the wall for a while and found a small gap in the wall behind him. The wind came from that gap.

However, this crack was located on the ground and was covered by the shadow of a rock above it. It was so hidden that it could not be hidden anymore. If not for the wind blowing out and confirming his position, he would not have been able to find it for another day.

He put his finger into the crack and suddenly felt a chill in his palm. After knocking on the stone wall, a hollow sound could be heard.

This must be the secret door of the ancient people who built this place. He didn't know what they were guarding against, but it was actually built so stealthily.

Without much thought, Lin Jin activated the zhenqi s from his entire body and fiercely lifted the hidden door up. Fortunately, the hidden door wasn't too strong, and it wasn't heavy either. He used a lot of strength, and this secret door, which was disguised as a stone, was immediately exposed and sent flying.

Using too much force, Lin Jin sat on the ground with his butt. At the same time, a loud sound could be heard from the pond behind him. He turned his head and saw the splashing water caused by the secret door smashing into the water.

He stood up and a half-human tall cave appeared in front of him.

Picking up the flashlight, he could see that there was a thin metal chain hanging by the side of the tunnel. The material of the chain was the same as those on the side of the pond. Maybe for the armrest!

Holding onto the chain, Lin Jin turned on the flashlight and carefully bent over and entered the cave.

After zigzagging for who knows how long, he suddenly saw a faint glow of red and green mixed in front of him.

Why is there a reddish-green light in the cave? At first, he thought he was seeing things, but after switching off the flashlight, the color of the light became even more obvious in the darkness.

"Could it be a treasure left behind by some ancient person?" Doubtful, Lin Jin switched on the flashlight and walked towards the light.

When he got there, he saw an extremely strange expression on his face.

Below him, connected by a long wire, were two electric lamps, one red and one green, calmly glowing.

The ancients could actually make light bulbs? Huge doubts arose in his mind.

Before he could figure out what was going on, a woman's voice sounded from far away, "Azure Dragon Cave, Longquan cave Group is our country's longest naturally-dissolved group. "The path within the cave is over 3000 meters long, the widest is about 30 meters, the highest is close …"