Yan Zheng didn't know when the toilet was created in history, but he knew that the Chinese ancestors had long discovered that human and animal manure could fertilize the fields.

In the 16th century, Western Europeans did not have the concept of dealing with excrement, so the Western cities at that time were basically occupied by all kinds of excrement.

The European custom of wearing high heels and wearing high hats is related to their habit of disposing of excrement.

Wear a high hat to prevent being hit by poured out of the roof, and wear high heels to reduce the feeling of stepping on.

Therefore, the urban population of ancient Europe has been maintained at a low level.

Once the population is large, it is destined to be rampant.

After the Chinese ancestors discovered that human and animal manure could fertilize the fields, they would deliberately arrange a place to store these.

Over time, some Langzhong found that if it is not good to deal with human and animal manure, it may cause plague.

This led to the fact that during the Tang Dynasty, there were laws and regulations to regulate the relevant urban sanitation.

Therefore, Yan Zhengjian's toilet is a trivial matter, and after forming a habit, it will have a significant impact in the future.

And after building the toilet, Yan Zheng led the tribe to start the tribe's leveling and hardening project.

The potholes in front and back of the thatched house are filled in, and after being filled, the thatched house and the ground are raised by a step.

Due to the lack of triple soil and cement, the tribesmen could only use large logs to continuously smash it tightly.

When there are steps, it is time to repair the drainage ditch and try not to allow more water to accumulate.

When water accumulates, there will be microorganisms and colonies, and mosquitoes will also be produced.

The leader still chose to support, and the clansmen did not complain, but only diligently followed the instructions.

After all the thatched huts were repaired and hardened in front of and behind the houses, Yan Zheng felt that the hygiene of the entire tribe would be improved.

The first is that the stench will disappear and the weeds in front of and behind the house will disappear.

He also planned to harden the large clearing in the center of the tribe, but considering that the bathing pit dug by the tribe was still there, he had to wait for the big pottery.

After two days of continuous work, his project was finally completed.

Each thatched hut was raised and hardened as required, and the drains converged on each other, creating ten main drains.

Although the tribesmen did not know what the use of these things was, when they were finished, they still looked at these neat thatched houses with great satisfaction.

They didn't have the concept of planning, even if the project that Yan Zheng thought was sloppy and couldn't work, it was extremely wonderful in their eyes.

Yan Zheng believes that as long as they wait for a rain, they will be even more surprised when they watch the rain gather and the drainage ditch flows endlessly.

The leader also smiled at this somewhat different tribe, and it was good to be satisfied with the tribe.

He saluted and thanked Yan Zheng again, as did the rest of the clansmen.

Yan Zheng was also very satisfied, and just when he was planning to celebrate his birthday, there were bursts of cheers at the gate of the tribe village.

When the leader heard this, he became ecstatic, and hurriedly beckoned Yan Zheng to run to the gate of the village.

Yan Zheng was also very happy, how could he have achieved an achievement in the past two days.

But when he came to the entrance of the village, the whole person instantly stayed in place.

At the gate of the tribe village, the young men who left the day before yesterday were greeting, and these people were not returning from hunting, but from killing.

The people who walked in front carried bloody heads in their hands.

It's a real human head, and because it was cut with a stone knife, it was as disgusting as it was.

But the men, women, and children of the entire tribe cheered in unison.

Yan Zheng was cold, and thought of a word - headhunter!

He once read an article about the headhunting culture, which existed in various regions at a certain stage of early human development.

Later, it only existed among some Austronesian language tribes, and by the twentieth century, the headhunters had largely disappeared.

Either they were slaughtered or completely abandoned this backward and barbaric custom.

The main reason why the custom of headhunting is barbaric and backward is that headhunting is regarded as a kind of faith, which not only deprives other people of their lives, but also cuts off the possibility of frequent communication with other tribes.

Just imagine, the tribes in a region have the custom of headhunting, so the tribes in this region are destined to beggar-thy-neighbor to each other.

Yan Zheng can almost imagine how difficult it is to strengthen this tribe now.

Because of the existence of headhunting customs, there is almost no basis for trust with other tribes, and the slightest disagreement can be cut.

In this case, it seems difficult to absorb other tribes to grow through peaceful evolution.

The leader looked at the young men with human heads with a smile and shouted at the crowd.

Immediately, the atmosphere of the entire tribe was extremely high, and judging from their carnival-like expressions, headhunters were really faith for them!

Yan Zheng almost couldn't hold back his bitter tears, he was too difficult!

He crossed over, and let him cross back to the Savage Heap. It's okay to have a bunch of savages, or a group of savages with bad habits of headhunting.

After a period of revelry, the leader stopped the dancing clansmen.

He waved his hand, and several young savages walked out with a sturdy young man in tow.

They respectfully placed the young captive in front of the leader, and respectfully handed over a stone knife that was not rough and polished.

Yan Zheng's heart was full of turbulence, as a person who has experienced modern civilization, he must not accept the custom of headhunting.

The leader looked at the sturdy savage boy, and after muttering a few words, he made a move that made Yan Zheng break out in a cold sweat.

He respectfully handed the stone knife to Yan Zheng and motioned for him to cut off the young man's head.

Yan Zheng's brain was buzzing, which tendon was wrong for the leader, so that he would think that he also wanted to hunt heads?

Lao Tzu looks so perverted?

Smack - Yan Zheng almost instinctively threw the stone knife on the ground.

After brushing it, the audience was instantly silent, and they were all shocked by his actions.

The leader was also puzzled, quickly picked up the stone knife, and stuffed it to Yan Zheng.

Yan Zheng looked at the young captive's frightened eyes, threw the stone knife on the ground again, and scolded them angrily.

The clansmen were all frightened, they couldn't understand why Yan Zheng was so angry.

The leader also watched silently, and he couldn't understand why the Son of God who fell from the sky would not accept the blood sacrifice to the ancestral spirit.

After Yan Zheng scolded for a while, he felt a little impulsive, and he was a little afraid, afraid that his head would also become a collector's item of a certain guy.

His expression gradually became normal, and he even smiled awkwardly.

Looking at this group of bewildered savages, his expression became flattering again.

He smiled at the leader, pointed at the young savage, and gestured, "This, don't cut off the head!" He drops, a large labor force, stays and uses it to work just right! ”

The leader didn't know what to do, and saw that Yan Zheng had no intention of killing this young savage. He seems to feel that there is not a good job there.

Yan Zheng saw that the leader hadn't gotten his meaning yet, so he raised his head to the sky and let out a long roar.

Then he made a decision against his ancestors, and he knelt down! Reverently looking at the heavens.

The savages were shocked by this move again, and seeing Yan Zheng's pious expression, they stood still one by one.

Yan Zheng closed his eyes, learned to dance the goddess, trembled all over, and his mouth was full of words.

After a moment, he slowly opened his eyes, pointed at the heavens, then at the young savage, and then at the bloody human head.

The leader probably understood what he meant, but his expression was unusually solemn.

The rest of the wildlings are also headed, and they have encountered these conditions there before.

After a long time, the leader sighed and had the savage captive carried into the tribe.

Yan Zheng breathed a sigh of relief, he wasn't sure if the leader understood what he meant, but it was always good not to let him kill.

He has another very necessary task at the moment, that is, he must abolish the head-hunting culture of this tribe.

Looking at the three bloody human heads, Yan Zheng secretly scolded people for being the most cruel animals.

What a good labor force, just like that, it was buried by ignorant faith.

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