Lin Yuan and his party, a total of five people, walked quickly north along the path between the crops in the plains.

Along the way, Hou Yi led them back and forth through the fields, dodging one small tribe after another, and finally, before sunset, they left the hinterland of the plains and came to the loess hills in the north.

On the loess hills, there are many sparse small trees, most of which are covered with dwarf green grass, and occasionally some animals can be seen, but they all run away quickly.

On the hills, they found an abandoned cave, which appeared to have been dug by hand, somewhat resembling the caves of later generations.

Hou Yi walked around the cave in amazement, for him, he had never imagined that artificial people could actually dig out the cave.

"It's just amazing...... What tools did they use to do it? How can you dig such a hard rock? ”

Hou Yi touched the stone wall and muttered to himself, Jiu Yao also looked around curiously, for these races in the mountains, it was really strange to see artificially dug caves.

And the tall Worm Zha and the little boy who was called the oil bottle by Jiu Yao, the two of them stood quietly aside, quietly watching Hou Yi and Jiu Yao explore around.

The oil bottle is a person from the Huang tribe, the terrain is similar to here, he must have been strange to this kind of cave since he was a child, and the dragon is a foreign race in the Western Regions, so he has naturally seen all kinds of strange dwellings, and his demeanor is also very calm.

Lin Yuan patted Hou Yi's shoulder with a smile and said:

"Actually, their tools, like the ones we have, are also stone tools and bone tools, you see, there is a piece of it here."

Lin Yuan suddenly leaned down and picked up a wedge-shaped bone artifact, one end was already very badly worn, and it looked like it had been used for a long time.

"Houyi, the magic of this cave is not what tools they use, but the soil here...... It's not the rocks in the mountains, it's not the hard dirt in the plains, it's ...... And lo and behold! ”

Lin Yuan said, and chiseled the bone weapon in his hand against the wall, and suddenly, the loess on the wall splashed everywhere and fell one after another.

"Well, you see, this is loess, and the soil here is more loose, and here, with just a simple tool, you can dig out a cave, so that it is convenient to perch...... If I'm not mistaken, this is the main way of living for the people of the north, right? ”

Lin Yuan smiled and turned his head to look at the small oil bottle, the little boy was stunned for a moment, and then nodded slightly.

It's good, this little boy has no problem hearing and is very smart.

Lin Yuan thought quietly.

"Wow, this way, people here won't have to build houses! It's perfect, you can live by digging a hole like this, it's much easier to build a house than cutting trees and burning pottery shards everywhere, and this cave is so easy to dig, you can dig wherever you want to live...... Unlike us in the mountains, where to find a cave is all up to luck......" Jiu Yao also came over and joined the discussion.

Lin Yuan smiled, thinking to himself, that's not it, this kind of construction method has been passed down for more than 10,000 years, and in the 21st century, there are still the same caves in northern Shaanxi and other places in China, and there are still people living in them.

Of course, it was impossible for Lin Yuan to say these words.

"Haha...... Definitely don't ignore this......" Lin Yuan stretched out his hand, poked it lightly on Jiu Yao's lovely head, and said with a smile: "You know, the most powerful thing about people is not how strong their bodies are, nor how fast they are, but ...... It's in their clever heads...... You see, this cave not only has the advantages you mentioned, but also that it is warm in winter and cool in summer...... Hey? This is?? ”

Lin Yuan suddenly only said half of his words, and he looked at the things on the wall of the cave in front of him with some surprise.

It was an inconspicuous groove, and if you didn't look closely, it would have been mixed with the ordinary excavation marks around it, but if you looked closely, you would notice that the details of the groove were markedly different, firstly, it was finely and deeply hewn, and secondly, there seemed to be a slight brown color left on it, as if it had been painted with paint.

Lin Yuan frowned, took a step back, took the torch handed over by Hou Yi, and took a closer look at the wall in front of him.

On it was a painting, a simple mural with a rough painting style, presented in front of everyone's eyes.

In the center of the picture is a huge circle with several rays drawn around it, which seem to represent ...... Sun?

Around the sun, it took a circle of dense strips, Lin Yuan frowned and leaned closer, only to see that those strips had a round shape above and a few pillars below, and they were originally painted with some villains.

These little people knelt in the direction of the sun, and there were some low long shapes, interspersed among the little people, it seemed that some animals, all the ******, were kneeling towards the big sun in the middle.

Lin Yuan touched his chin and said thoughtfully:

"Well, it seems, it's some kind of religious mural, they're worshipping the sun, it's ......"

"This is the Sun God Cult!" The strong man said suddenly, startling everyone, and everyone looked at him.

The strong man raised his chin and said contemptuously:

"It's all a mess of false gods! Only the god of fire is the true god! Hum! Not surprisingly, I've also seen tribes worshipping the trees...... Don't look at it, if you have this kung fu, why don't you come and help me make a fire and eat. ”

The strong man gathered some dry firewood from all over the place, and began to make a fire with flint and two strikes, and the little boy approached with interest and helped hand over the firewood.

Hou Yi suddenly glanced back at Lin Yuan, and that look seemed to say that the inventor of this method of making fire was right in front of him......

Lin Yuan snorted and signaled Hou Yi to keep it secret.

Jiu Yao suddenly shouted and asked Lin Yuan to come over, "God's best! Look, here! ”

Jiu Yao pointed to the inner part of the stone wall, where there was also a mural, this mural only depicted a person, the lines were simple and rough, but it could be vaguely seen that the person had his eyes closed, his hands crossed on his chest, facing the direction of the sun, as if he was worshipping.

Lin Yuan touched his nose, his gaze stayed on the person's hands, his hands crossed on his chest, this is a religious ritual that only the Vulcan Sect will use, and back then, it was invented in front of him, how could it be here at this moment?

Hou Yi also came over, he looked at the painting, but couldn't help muttering:

"King Yan...... How do I feel...... How does the person in this painting look...... So like a ...... person? ”

Lin Yuan nodded slowly, and also said:

"Hmm...... When you say that, it really seems a bit like ...... Like an old man......"

"Ahh I remember, don't you think? He's so much like Fuxi! Look at that forehead, the bridge of the nose, almost the same as Fu Xi's touch! ”

Hou Yi said to Lin Yuan excitedly, his voice echoing in the stone wall.

Lin Yuan hurriedly stretched out a finger and put it on his mouth, meaning that Hou Yi's voice was a little quieter, but what he said just now had already been heard by everyone in the cave.

"Brother Yi, what did you just say? Fuxi? He slowly stood up, opened his mouth, and said with a smile:

"Of course it's Fuxi! Don't you know that the founder of the Sun God Cult, the man they call the Children of the Sun, is Fuxi! Have you seen his portrait anywhere else? How did you recognize that? ”

Lin Yuan hurriedly snorted and occupied the front of Hou Yi, he thought to himself, Hou Yi this young man is still too straightforward, it seems that when he turns around, he must find an opportunity to talk to him well, and he must take care of his mouth, otherwise once the secret that he and he can pass through is known by others, it will be troublesome......

"Haha, Worm, your ears are very good! You can hear it from so far. Lin Yuan said with a smile, "When Hou Yi and I were in our hometown before, we also saw someone painting a portrait of Fu Xi on the stone wall, so we knew each other...... Right! ”

Lin Yuan gave Hou Yi a look, roared and lowered his head and didn't dare to say anything.

“…… But...... Then again, how did Fu Xi become a saint of the Sun God Cult? Isn't he the number one fire watcher of our Vulcan Cult? ”

Lin Yuan changed his words and asked Yu Zha.

He buttoned his nostrils, looked indifferent, and said:

"Huh...... Who knows, maybe the saint had an epiphany in his old age, maybe he was bewitched, who knows, anyway, I heard that he did later start a new sect...... Alas, whatever, come on! Roast the hare! I hit this thing today, or rely on Hou Yi's archery skills, let's eat it, the dry food is almost finished, maybe this is our last full meal......"

Lin Yuan snorted in time, helped Hou Yi and Jiu Yao, and sat by the fire together......

When everyone started to have a large piece of Shuohua, Lin Yuan was holding a rabbit leg, a little stunned, he was thinking about the pictures he saw on the mural in his mind, this is an important clue, perhaps, it can be interpreted in the thousands of years since he left, what happened to the human tribes, the Yan tribe, and Huadu at the end of the Stone Age......

These ancient myths and legends, perhaps, hide hidden truths......

At this time, outside the warm cave, the sky was already completely dark, and a faint fire came from the entrance of the cave, attracting a large number of insects to fly around.

Not far from the cave, there was a dead tree, but at this time, it suddenly moved, the dead tree cracked a hole, and a dexterous shadow sneaked out, picked up some stones on the ground, and piled them into a triangle, and the arrow was pointing to Lin Yuan in the direction they were heading.

Eventually, after doing all this, the dark shadow stood up and quickly disappeared into the night......