After Lin Fan and A Xing dealt with the mechanical dinosaur monster and the mechanical guards, they finally got the chance to thoroughly explore this mysterious underground ruin. They walked slowly along the passage of the ruin. The passage was filled with an ancient and quiet atmosphere. The ancient symbols and patterns on the walls seemed to be telling a long-forgotten story. The symbols were of various shapes. Some were like winding snakes, and some were like flying birds spreading their wings, mysterious and unfathomable.
"Lin Fan, what do you think these symbols mean? Could they be telling us some secrets?" A Xing stared curiously at the walls. His eyes were full of confusion. There was a glimmer of eagerness and curiosity about the unknown in his eyes.
Lin Fan carefully observed the symbols and frowned, "I'm not sure either, but I feel these symbols are hiding important information. We have to be careful. There might be other dangers." His expression was solemn. There was vigilance and caution in his eyes. He was always ready to deal with possible unexpected situations.
Just then, they came to a huge hall. The dome of the hall was lofty and magnificent. There was a huge stone platform in the center. On the platform was a crystal ball emitting a faint blue light. There seemed to be energy flowing inside the crystal ball. The energy was like a faint blue stream, flowing slowly. The surrounding air became extremely cold because of it, as if they were in an ice cellar. The cold was biting.
"Wow, this crystal ball looks so mysterious!" A Xing couldn't help but reach out his hand to touch the crystal ball. His hand was slowly stretching forward. His eyes were full of excitement and impulse.
"A Xing, don't touch it!" Lin Fan quickly stopped A Xing. "This thing might be very dangerous." His voice was urgent and serious, trying to prevent A Xing's reckless behavior.
However, A Xing's hand still accidentally touched the crystal ball. Instantly, the crystal ball shone brightly. A powerful energy wave sent Lin Fan and A Xing flying. They fell heavily on the ground. They felt as if all their bones were going to break. Their bodies were in great pain, as if they had been hit hard by a hammer.
"Ouch, my butt!" A Xing rubbed his painful butt and complained bitterly. There was a painful expression on his face.
Lin Fan got up from the ground and watched the crystal ball warily. Suddenly, a series of images were projected from the crystal ball. The images showed that in the distant past, the Earth had once suffered an alien invasion. At that time, the sky was covered by alien warships. The land was trembling in the war. Humans fought a thrilling battle against the alien forces to resist the invasion. The battlefield was filled with smoke and the shouts of battle were deafening. The lights of laser weapons were crisscrossing. During the battle, humans discovered a mysterious energy source. This energy source had powerful power but was also extremely unstable. The energy fluctuations it emitted were like surging waves and could go out of control at any time. To seal this energy source, humans built this ruin and set up numerous mechanisms and guardians. The guardians were of various forms. Some were like fierce beasts and some were like mechanical soldiers, standing ready.
"So this ruin was built to seal the energy source." Lin Fan suddenly realized and had a deeper understanding of the meaning of this ruin.
The images continued to play. They saw that as time passed, some evil forces learned about the existence of the energy source in the ruin and tried to use it to rule the world. The members of these evil forces had greedy eyes and ferocious expressions. The monsters and mechanical creatures that appeared before were the results of these evil forces trying to open the ruin and obtain the energy source. The monsters were showing their teeth and claws. The mechanical creatures had a cold metal luster on their bodies. Wherever they passed, there was chaos.
"These guys are really despicable!" A Xing said angrily. His fist was clenched tightly. There was a flame of anger burning in his eyes.
Just then, a mysterious figure appeared in the images. This figure was completely covered in a black robe. His face couldn't be seen. The black robe was fluttering slightly in the wind, giving a mysterious and gloomy feeling. The man in the black robe was muttering something to the crystal ball, as if performing some kind of spell. He was muttering in a low and strange voice. Suddenly, the images in the crystal ball began to distort. The voice of the man in the black robe echoed in the hall: "Since you have discovered this secret, don't even think about leaving alive!" The voice was like a devil's whisper, making people's hair stand on end.
Immediately afterwards, countless small holes appeared on the walls around the hall. Laser beams were shot out from the holes, interweaving into a dense laser net and coverin