As the light appeared in front of him, Guo Yang finally saw the surrounding situation clearly, and couldn't help but gasp.

"Cow, these bones!" Guo Yang shouted.

Dense skeletons, discarded at will, with animal bones and human bones, shining with white light under the light of the fire.

When the wind blows, small clusters of green phosphorus fire will appear on some of the bones, slowly and leisurely.

What particularly surprised Guo Yang was that these skeletons were very large, two or three points larger than normal.

"The first time I came in, I was scared half to death. However, compared to the soldiers of the people in the outer weeks, these skeletons are still terrifying and slow, hehe. Duanmu Niu held a torch and walked forward.

Guo Yang looked left and right, and quickly followed.

The Zhou people called this place a sinkhole, as if it was a forbidden place for them. I just don't know why there are so many human and animal bones. Duanmu Niu said as he walked, and the bones under his feet "clicked", which was even more harsh in the silent night.

Guo Yang looked at Duanmu Niu Wenwen's weak appearance, and was quite puzzled: "Could it be that this guy who is white and pure on weekdays has also practiced martial arts?" ”

The sinkhole is extremely deep, and the deeper you go, the more precipitous it becomes.

Guo Yang had an illusion in a trance, the two of them were following a path that spiraled downward, all the way to the depths of the earth.

The yin wind gusted, and faintly, a resentful sigh came out of the bottomless pit, making Guo Yang's cold hair stand up.

He followed behind Duanmu Niu, only to feel that the cold air was getting thicker and thicker, and he couldn't help but regret a little, he should have worn a sheepskin robe.

After another hour of downward walking, the skeletons gradually decreased, and a grayish-white gravel gradually increased.

This kind of stone looks similar to ordinary stones, but Guo Yang picked up a piece and pinched it in his hand, and was surprised to find that these stones were very light, as if some substance in them had been extracted.

After a little further walking, the bones and gravel were gone, and there was a fine gray-white sand under my feet. And, the deeper you go, the smaller the grains of sand become.

When they reached the bottom of the sinkhole, the two people stepped on a kind of gray-white powder.

"Sheep, have you noticed it, there seems to have been something here, and it has changed drastically, and this is the formation of a sinkhole."

Duanmu Niu squatted down, pinched a handful of gray-white powder, and said with a frown.

"Well, it seems that there was a drastic change first, and then, a monster appeared, and devoured everything in the nearby stones."

Guo Yang also squatted down and carefully probed the powder under his feet.

He followed his father to make bronze tools and was knowledgeable about all kinds of ores. The gray-white powder in front of him was obviously devoured by some of the minerals in it, and it became like this.

Duanmu Niu nodded and said, "You're right, Yang, it seems that I really didn't find the wrong person." ”

Guo Yang smiled, didn't speak, and continued to take a few steps forward.

He found that as he went deeper into the bottom of the sinkhole, the cold aura was gone.

He looked up to the sky and could only see a huge funnel-shaped pit, but the sky was invisible.

Guo Yang took out a knife wrapped in a piece of animal skin from his body.

Duanmu Niu also took out a short sword from his body, with a scabbard made of wrought copper, which was inlaid with seven light blue gemstones.

Guo Yang glanced at Duanmu Niu's short sword and grinned: "Good boy, you have also practiced martial arts!" ”

Duanmu Niu smiled and said, "In troubled times, how can you not ask for your own life. Let's go, the front is where I found the tortoise shell. ”

The two teenagers cautiously walked forward.

Twenty or thirty feet ahead, the air is filled with a cool breath. This kind of atmosphere Guo Yang is very familiar.

It was the unknown substance that he kept incorporating into his body when he practiced the knife!

Guo Yang's heart moved, and he glanced at Duanmu Niu, and found that his face showed excitement, and his white face was reflected by the firelight, and there was an abnormal flush.

Guo Yang was secretly vigilant and adjusted his breathing to the state he was in when he practiced the knife. He is confident that with his practice over the past year or so, he will be able to cope with even if something happens.

The closer you get to the bottom of the sinkhole, the cooler the smell becomes.

Suddenly, Guo Yang stopped, and slowly grasped the handle of the knife with his right hand.

He felt a hint of danger.

Duanmu Niu also stopped, looking at the dark depths with some nervousness.

The torches burned "beep and peel", and the atmosphere became solemn.

"Ahead, there are monsters. Last time, I sneaked in, touched three tortoise shells, and went out. Didn't dare to provoke. Duanmu Niu said in a low voice.

Guo Yang looked back at Duanmu Niu, held his breath, and slowly took a step forward.

Two steps.

Three steps.

……

When he took the fortieth step, Guo Yang stopped.

In the depths of the sinkhole, there was a slight tremor, and it seemed that a huge monster suddenly opened its eyes.

Immediately afterward, a dull loud noise came out in the distance, which was breathtaking.

Guo Yang's body shook for a while, and he felt as if his chest was filled with copper juice, and he was so dull that he couldn't breathe.

He hurriedly picked up the luck method in the three sword techniques, stirred up the cool breath in his body, and made it flow quickly throughout his body, which drove away the weight of dizziness and nausea.

Duanmu Niu didn't seem to be having a good time, holding a sword in his right hand and drawing a strange curve diagonally in his left hand. Suddenly, a pale blue mask appeared around him.

The light mask shrouded Guo Yang in it.

Guo Yang suddenly felt that his breathing was much smoother, and he turned his head to look at Duanmu Niu, full of surprise.

"Niu, what kind of kung fu is yours, so powerful?" Guo Yang asked.

"It's not kung fu." Duanmu Niu said with a smile, and immediately, his face was solemn, staring at the depths of the sinkhole.

Guo Yang saw Duanmu Niu's solemn expression, so he didn't ask any more questions, took a deep breath, and held the handle of the knife tightly.

"Gollum—"

"Gollum—"

In the darkness, the palpitating sound was dull and depressing, like a giant beast trapped for thousands of years under the abyss, letting out a painful breath.

"There's tortoise shells around here, hurry up and find them. That monster doesn't seem to come out! Duanmu Niu shouted in a low voice.

Guo Yang hurriedly searched for it in the nearby gray-white powder.

"One piece!"

"There are three more pieces here!"

The two teenagers excitedly picked up pieces of tortoise shells and put them into a sheepskin bag.

As pieces of tortoise shells were discovered, Guo Yang and Duanmu Niu gradually forgot about the palpitating monster and walked towards the depths of the sinkhole step by step.

"Cow, I've got nineteen here. How many did you pick up over there? Guo Yang said excitedly.

"Fifteen." Duanmu Niu said.

"Niu, tell me the truth, is there a set of exercises recorded on this tortoise shell?" Guo Yang asked while searching for tortoise shells on the ground.

"It seems to be. However, I only got three pieces before, and I haven't understood it yet. Duanmu Niu said with a deep groan.

"With that, that's probably enough. The monster ...... How I feel my heart beating so hard. Guo Yang glanced into the darkness with some horror.

"This ...... I think there should be at least sixty-four tortoise shells. We've only picked up a couple of two dozen pieces now. ”

Duanmu Niu said hesitantly.