"Isn't this day and age only knowing his mother but not his father? How did this Gray have the consciousness of being a father? Ye Feng asked at the root of the tree in surprise.

The roots of the tree looked at Ye Feng with a strange look, there was anything else in this world that Ye Feng didn't know? What else is the mother? What is the Father?

Seeing the constipated look on the root of the tree, Ye Feng knew that he didn't understand the meaning of this sentence, so he explained: "Mother is the great woman who gave birth to you and gave you life, and Father is with your mother...... "Ye Feng said that it was suddenly stuck here, and he didn't know what words to use to explain.

He held back for a long time, and finally stumbled to explain the meaning of these two words.

The root of the tree suddenly realized and began to explain Ye Feng's previous question: "The chief of each tribe has a woman of his own!" Generally, it is sent by other tribes to maintain relations, and if the clansmen want to have a woman who belongs to them, they can take the food to the tribe where the woman is located and trade it. The root thought for a moment and said, "Of course, ordinary clansmen can't get so much food, so they don't care about it after they are intertwined. ”

Although Ye Feng was even more puzzled, he frowned and asked him: "There are many women in the tribe, so they don't have to find women from their own tribe, they have to find other tribes?" ”

When Shugen heard this question, his face suddenly changed, and he hurriedly glanced around, lowered his voice, and said cautiously: "Don't talk nonsense about this kind of thing!" This kind of thing is cursed by demons, and the children born are monsters! ”

"Monsters? How can it be! Ye Feng thought so, and was about to open his mouth to mock, when he suddenly realized one point-the population of the large and small tribes here is generally tens or hundreds, which must be mixed with people who have the same blood relationship with each other to a large extent.

Anyone who has studied biology knows that the probability of genetic diseases and various malformations in the offspring of inbreeding will be greatly increased, and coupled with the confusion of inbreeding, people looking for their own tribe will have trouble to a large extent.

Although primitive people have not studied biology, they are also aware of this, and since they cannot straighten out their chaotic close relatives, they simply and rudely do not make further interactions with the opposite sex of their own tribe, and all problems will be solved.

Thinking of this, Ye Feng was relieved, but as an atheist, he was dissatisfied with the ghost and god theory at the root of the tree, and decided to severely criticize him on the day of the tribal class.

It is said that since the construction of the city wall, the tribal classroom has been suspended, and I don't know if those primitive people have a firm grasp of these knowledge points, so they will have to check it when the time comes. When I think of the random spot check that I feared the most when I was a child, I would clear out a nightmare every time. Now that it was his turn to be a teacher, the corners of his mouth couldn't help but rise in the face of those simple primitive people.

……

Day after day, life in the tribe seems to have returned to the time before the crossing – breakfast, work, lunch, work, dinner, sleep...... The things you face every day seem to be in an infinite loop, which makes people boring. It's like watching a movie, the first time you feel fresh, but if you watch it back and forth a dozen or so many times, no matter how classic and good-looking the movie is, it will be boring.

Just today, this kind of day finally came to an end—today was the day the walls of the Xingyue tribe were completed.

This wall of the Xingyue Tribe is seven meters high, five meters wide at the bottom, and 4.5 meters wide at the top, making it a solid trapezoid. Not only does it extend the life of the wall, but it also increases the defense of the Great Force's impact.

The city wall uses logs side by side as two walls, and there are no city bricks in this era, and it is impossible to fire city bricks under the current conditions, so they can only be replaced by logs, but in this era it can be regarded as an invincible existence. The middle is compacted and filled with rammed earth and mixed with a large amount of hay and palm leaves, which adds to the solidity of the wall.

The city wall is semicircular, and the two heads of the city are connected to the mountain walls on both sides of the cave entrance, enclosing the space of about 2,000 square meters in front of the tribal cave.

Not only that, Ye Feng also ordered the irregularly shaped hole to be straightened out, and blocked the hole with a wooden wall composed of giant trees, leaving a small door for four people to walk side by side.

Of course, for the sake of lighting and ventilation, the wooden wall at the entrance of the cave is not so much a wall as a huge wooden fence, and there is a palm-wide spacing between the giant trees and the giant trees, which can not only be used for lighting and ventilation, but also if the city wall is breached by the enemy, people can retreat to the cave, and these spacings can be used to shoot with bows and arrows from the outside.

If it doesn't work out, don't forget that there is another exit to this cave, and only a few people know about it, this wall can delay the enemy's time, buying precious time for the tribe to retreat.

Of course, this mechanism has never been used in the expedition of the Xingyue Tribe, but that's another story.

Ye Feng climbed the city tower, holding on to a wooden battlement, looking at the horizon in the distance, a momentum that would be overwhelming, and a view of the mountains and small mountains spontaneously arose, well, in fact, a shack was built above the city gate, the smell of grass on the roof of the shed had not yet dissipated, and there was a gust of wind, and from time to time there were blades of grass falling with the wind, burrowing into people's necks, causing people to itch.

"What's more, Lao Tzu will one day build a city tower that is more magnificent than the Xi'an City Tower, for future generations to admire!" Ye Feng was under this "city tower" that sheltered from the rain and the wind, and made his loud and bold words.

"Smack!" At this moment, Chu Yun gave him a big ear scraper on the back of his head, and said with hatred: "Can you not blow it, return to Xi'an City Tower, why don't you go to heaven!" Don't scare the archaeologists to death! ”

"What's this, I still want to engrave planes, tanks, rockets, spaceships, etc., on my epitaph after I die, and scare those so-called experts to death!" Ye Feng didn't dare to talk back, so he had to mumble in the bottom of his voice.

Chu Yun's snow-white little ears moved slightly, but she still heard it, not only was she not angry, but she also said happily: "That's good, engrave this girl's delicate face, and let this girl be a goddess of ten thousand years!" Boom"

Ye Feng pursed his lips disdainfully, and muttered in a suppressed voice: "Phew, the goddess of ten thousand years, the banshee of ten thousand years!" ”

"What, what are you talking about?" Chu Yun asked, squinting his eyes slightly, and continued suspiciously, "It doesn't feel like a good thing." ”

How could Ye Feng let her know what she was talking about, wouldn't that be death, so he said with a smile: "I'm saying, you were so reasonable just now, you will definitely amaze the otaku in later generations, and those stars can't compare." ”

To be continued