The entrance to the cave is dozens of meters high, enough to easily accommodate a large aircraft.

The downward steps are also unusually wide, with one step being three meters wide.

It looks like this entrance is intended for giants more than twenty meters old.

Moreover, the cave appeared in front of everyone without warning. This scene is quite shocking.

Even Wang Hongen, who had been prepared, was stunned, but his eyes quickly showed ecstasy.

He couldn't wait to say, "This must be the ruins of an ancient civilization, let's go in and have a look." ”

Xu Yin hesitated: "I don't know if there is any danger inside, it's too unsafe to venture in." ”

"Start by using a small drone to detect the environment. ”

Wang Hongen was very well prepared, he took out several palm-sized biplane drones to probe and scan the internal environment of the underpass.

The drone is very fast, and all the images and data scanned can be transmitted back in real time. There are also artificial intelligence programs, which are completely automated.

"The temperature is 24 degrees, the air content is normal, the humidity is normal, no harmful substances to the human body have been found, and there is no abnormal energy radiation ......"

All the data scanned by the drone is very suitable for human survival.

On the virtual light screen, you can clearly see the picture taken by the drone.

The underground passage is more than ten kilometers long, and the whole passage is very flat and clean, without any danger.

At the end of the passage is a large, eccentric palace, empty except for a high platform in the center.

Xu Yin also breathed a sigh of relief. The interior of this ruin is very simple and there is no danger whatsoever.

She turned and was excited, any ancient ruin was of great value.

This discovery alone is enough to publish dozens of papers.

A group of students didn't think about it so much, they were all extremely excited. The underground palace in front of them was completely beyond their imagination.

Young people, always full of exuberant curiosity.

It's Yun Qingshang, all of them have an inquiring look.

Wang Hongen was very satisfied with everyone's reaction, he controlled the excitement in his heart and said in a deep voice: "There is no danger, let's go in and have a look." ”

With Wang Hongen's words, the anxious student rushed into the hole first.

Gao Xuan followed behind Wang Hongen with a smile, keeping a suitable distance.

He didn't know where there was danger inside, anyway, if he followed Wang Hongen, it was easy to deal with the danger.

Yun Qingsheng naturally had to follow Gao Xuan closely.

Wei Zhenzhen also wanted to rush in to watch the excitement, but she was more interested in Gao Xuan.

Compared with the mysterious underground palace, the handsome brother Gao Xuan is more attractive.

Wei Zhenzhen was embarrassed to follow Gao Xuan alone, so he dragged Xu Yin with him.

Xu Yin is particularly interested in the underground palace, but she is not too urgent.

Anyway, the underground palace can't run away here, and she doesn't need to be in a hurry.

Wang Hongen was very silent and didn't speak all the way. His eyes were shining, and he didn't know what to think about anymore.

Gao Xuan was very curious, what did Wang Hongen want to do?

The palace was empty, and the Heavenly Dragon Pupil was obviously not here.

Gao Xuan really wanted to snatch the thing in Wang Hongen's hand, but he didn't know anything about it, and he might not be able to use it if he grabbed it.

Strange things are all strange things, and they cannot be speculated with common sense.

It's like slashing the sword, if you don't know the taboo of the sword, you can't control it.

Gao Xuan still decided to wait.

No matter how scheming Wang Hongen was, he would never have imagined that someone would be waiting for him here in advance.

Gao Xuan, as a yellow finch hiding behind, doesn't need to worry.

More than ten kilometers of underpasses, Wang Hongen and they walked for half an hour.

By the time they arrived, the students had already arrived. They placed lamps everywhere to illuminate the whole hall.

The main hall is built with huge stones, and the whole style is simple and primitive and grand.

The dome of the main hall is two hundred meters high, and people standing in it look very small. The stone platform in the center of the main hall is carved out of a complete boulder.

There are many images carved around the stone platform, and the lines of the images are simple and rough. But it can be seen that the painting is a combat situation.

A group of giants with that kind of weapon, fighting monsters of all shapes, and in the end, the giants won.

Xu Yin was particularly interested in these images, holding a smart watch while recording the footage, while bowing her head to study it carefully.

Wang Hongen circled around the stone platform for half a circle, and came to the place with his back to Xu Yin, he pressed the dragon tooth key in his hand on the platform, and quickly recited a few strange-sounding incantations in his mouth.

He has been studying the Dragon's Tooth Key for almost twenty years, and he has studied it very thoroughly.

This simple spell is actually used to activate the sacrificial altar.

That's right, this platform is actually a platform used by the ancient wisdom dragons to sacrifice prisoners of war.

If you want to get the treasures left by the dragons, you must first sacrifice flesh and blood. Especially pure teenagers and girls.

Wang Hongen had to lead the team in, because he took a fancy to this group of young students.

After the Dragon's Tooth Key and the Altar resonated, the huge Altar sank rapidly.

The whole process was a huge rumbling sound, and the whole hall was trembling.

The sudden drastic change also frightened everyone.

A group of students were all scared and didn't know what to do.

Xu Yin was also taken aback, if the palace collapsed, they would have no chance of surviving.

The underground passage is more than ten kilometers long, and it is too late to run now.

Fortunately, the rumbling earthquake soon stopped, the high platform disappeared, and the original place became a huge deep pit. It is several tens of meters deep.

A group of people looked into the pit to see what was going on inside.

Wang Hongen quietly took out a piece of dragon soul vine from his pocket, lit it with a lighter and threw it on the ground.

The dragon soul vine exudes a spicy aroma, a bit like fried chili peppers, and the taste is extremely pungent.

Because the air in the hall is clean, everyone has already taken off the filter masks.

The spicy aroma that suddenly came out made a group of people cough violently.

Gao Xuan saw it very clearly from the sidelines, it was Wang Hongen's ghost.

Xu Yin also saw it, and she asked with a stunned face: "Ahem, what are you doing Professor Wang?"

"This is a dogwood used to ward off evil spirits and pray for blessings in ancient times, and I saw that there was such a ritual in the record, so I took it out and tried it. ”

Wang Hongen replied casually, very calm and calm.

Xu Yinzhi didn't think too much, but felt that Wang Hongen did it without saying a word, which was a little rough.

Gao Xuan felt very bad, he knew that the six-winged cicada in the sea had begun to flutter its wings and roar, reminding him that great danger was coming.

Gao Xuan is still too late to leave now, but he is unwilling to leave like this.

He glanced at Yun Qingsheng: "Take him." ”

Yun Qingshang comprehended, and immediately urged his strength to rush towards Wang Hongen.

With the blessing of the crimson heart, Yun Qingshang was sure to capture Wang Hongen within three moves. If you want to kill Wang Hongen, one move is enough.

Although Wang Hongen is a fifth-level source force, his combat experience is obviously insufficient.

Yun Qingsheng's speed was extremely fast, and his figure flashed, and he had already rushed in front of Wang Hongen.

Wang Hongen was shocked, Yun Qingshang was not only fast, but she also had the momentum to pierce everything with a simple slap.

Especially Yun Qingsheng's body is full of source power, rich and pure, and he is actually two points stronger than him.

If he hadn't seen it with his own eyes, Wang Hongen would never have believed that Yun Qingshang was so powerful at a young age. He didn't have much combat experience, and he couldn't help but panic a little in the face of Yun Qingsheng's fierce offensive.

The people around him were also shocked, and they didn't know why Yun Qingshang wanted to do something to Wang Hongen.

Xu Yin was still shouting to stop: "Stop!"

Yun Qingshang didn't care what Xu Yin shouted, she only listened to Gao Xuan.

Wang Hongen is the one who does big things, but he calmed down at the critical moment, he knew that he couldn't retreat, so he stabilized his footsteps at the moment and put on a cross fist.

He has been practicing boxing for many years, and this defensive boxing is also very well practiced. Facing Yun Qingshang's sword, he naturally used all kinds of changes in the cross boxing frame.

Wang Hongen found a feeling, and his boxing skills were a little more calm and sophisticated.

Yun Qingshang was also a little surprised, so that a fighting situation would be formed, and it would be difficult to take down Wang Hongen in a short time.

She couldn't hide her martial arts anymore, and the palm knife that stabbed straight suddenly changed direction like a spiritual snake, passing through the gap between Wang Hongen's fists.

This serpentine palm knife is delicate and mysterious. Wang Hongen watched, but he was powerless to dodge. was poked in the heart by Yun Qingshang's fingertips.

Yun Qingshang was afraid of poking Wang Hongen to death, and he also collected five points of strength. But she immediately sensed that something was wrong, and the place where her fingertips poked was tough and thick, and it was definitely not a human body.

"He also wore armor. ”

Yun Qingshang immediately turned a thorn into a grasp, and his five fingers were torn like hooks.

With a "snort", Wang Hongen's mountaineering suit was torn open with several cracks, revealing the blue-gray protective armor inside.

This kind of protective armor was enough to resist a small-caliber pistol, and Yun Qingsheng's palm knife did no harm to him at all.

Yun Qingshang was not frustrated when she missed a move, she did not hesitate to attack continuously.

Although Wang Hongen has protective armor, his combat skills are far inferior to Yun Qingshang. You can only hold on to the vital points of your face and keep retreating.

Yun Qingsheng's attack was swift and swift, and he didn't give Wang Hongen any respite, and Wang Hongen was extremely embarrassed.

The surrounding students were stunned, they didn't know why Yun Qingshang was doing it with Wang Hongen.

Yun Qingshang's swift and ferocious attack also frightened them. No one dared to stop it, let alone help Wang Hongen.

Xu Yin saw that Wang Hongen was about to be killed, she gritted her teeth and was about to go up to help, but was grabbed by Gao Xuan.

"Wang Hongen is not a good person. ”

Xu Yin was stunned, "No matter what Wang Hongen does, you can't just do it!"

Xu Yin was about to break free of Gao Xuan when a huge roar suddenly came from the deep pit.

The roar was like a thunderbolt, and like the angry tide of the sea, its momentum was majestic and magnificent, and its majesty was mighty and surging, and the hearts of the people who shook were stirred, and it was difficult for them to be themselves.

Gao Xuan sensed the danger one step ahead, and as soon as he reached out and grabbed Wei Zhenzhen on the side.

The six-winged cicada's six wings vibrated at high speed, and the high-frequency and silent spiritual roar formed an invisible shield, enveloping him, Xu Yin, and Wei Zhenzhen.

Everywhere the roar passed, the invisible shield fluctuated and undulated, but it barely held on and did not break.

Even Wei Zhenzhen, who has cultivated the most shallow, is safe and sound.

The rest of the people in the hall were not so lucky, they all bled and fell to the ground on the spot.