Shen Nong and Chi had just returned to the tribe, and someone immediately greeted them, but it was the pecking bone that had brought him food in the past few days.

"Wu, you're finally back, haven't you encountered any danger?" asked Bone a little worried.

"Nope. Shen Nong shook his head: "Do you have something?"

"The chief instructed me to tell you if I saw you coming back, there is no water in the tribe again, he will first take a few tribesmen to Bai Ze to carry water, please stay in the tribe. Bone pecking said seriously.

"Oh, okay, I see, you can go about your business. Shen Nong didn't care much, because there was only one water source near the Huangqiu tribe, Bai Ze, so the tribesmen in the tribe would go there from time to time to bring water back to provide the daily water needs of the tribesmen.

"Wu, you should be tired, do you want to go back to the cave to rest first? I'll give you a spoonful of water. After seeing the peck leave, Chi asked tentatively.

"No, you take me to the tribe's water storage place. Shen Nong shook his head and said very decisively.

"Yes. Chi nodded in response.

The civilization of the Huangqiu tribe is very backward, basically most of the things used by the tribe are bone products, and the slightly more advanced ones can barely reach the level of stone tools, which is extremely simple.

Although he already knew that the civilization of this tribe was backward, when Shen Nong saw the water storage land of the Huangqiu tribe with his own eyes, he couldn't help but show a look of disgust.

I saw that this was a steep mountain wall, and at the bottom of the mountain wall, someone forcibly carved out a hole about four square meters in size, this hole is two meters high, just enough for people to walk into. On the ground inside the cave, there are seven or eight stone barrels with rough shapes, and you can see that there is a little clear water left in each bucket, which is no deeper than a knuckle.

"Wu, this is our water storage place, and every time the chiefs bring back the water they bring back, it will be stored in these buckets. Chi introduced.

Because it is placed in the hollow mountain wall, this water storage area has the function of rain protection and sun protection, which can not only prevent the rain from bringing dirt into the body, but also prevent the water from evaporating in hot weather, killing two birds with one stone.

"What tools did Xiong Sickle use to transport water from Bai Ze?" Shen Nong asked, seeing that these seven or eight stone barrels are only half a meter high, and the capacity is not very large, if it is used by the entire Huangqiu tribe, it is estimated that it can only barely last for two days, and when the time comes, the people in the tribe will have to go out again to carry water back, otherwise everyone will fall into the dilemma of having no water to drink.

"Yes......" Chi thought for a moment and said, "We use the stomach pouch of the beast, we usually let the women in the tribe wrap the stomach pouch with the fur of the beast, and then use the animal tendon to sew the fur and the stomach pouch together to prevent the stomach pouch from leaking, so that the people in the tribe can carry the water back safely in the stomach pouch." ”

"Black technology! I didn't expect you to invent this. Shen Nong said with some surprise, the stomach pouch that can hold water that Chi said is actually the predecessor of the water bladder, and the difference between the two is only that the water bladder is made of leather, not the stomach pouch of the beast.

"Black technology?" Chi scratched his head in confusion, not knowing if it was because of an illusion, he felt like a different person today, not only saying some words he had never heard before, but also showing a little strangeness to the things in the tribe.

"How much water can the clansmen bring back every time they go out to carry water?"

"It's enough to fill these stone buckets, because Bai Zeli lives in the relationship with water monsters, we are very careful every time we take water, and we don't dare to collect too much, for fear of alarming the water monsters at the bottom of the lake. ”

Shen Nong stretched out his hand and pinched his chin and thought secretly, since he had become the witch of this tribe in a daze, even if he didn't think about the humans in this tribe, he had to think about his future living environment.

If the water storage in the Huangqiu tribe is small, then wait until the dry season, even if he is everyone's respected witch, it is inevitable that there will be a shortage of water to drink, as the saying goes, if you don't build a nest in summer, you will freeze to death in winter, although it is not yet the dry season, but Shen Nong must also start to prepare, otherwise when the dry season comes, the sun will be exposed, the earth will dry up, and the water source will be scarce, and even Bai Ze will dry up half, and the danger of taking water will greatly increase.

"Chi, who are some of the more skilled carves in our tribe?" Shen Nong asked.

Chi thought for a moment: "Hmm...... There are armor, cang, Uncle Beibang, Pan. ”

"You go and call them all over now, and don't forget to ask them to bring their tools, I have a task to promulgate. ”

"Oh. Although I don't know what Shen Nong is looking for these clansmen to do in a hurry, after all, it is Wu's order, and Chi still obediently does it.

It didn't take long for four people to follow Shen Nong towards him, three of them were in the prime of life, and one was just a teenager, all holding some strange-looking bone tools in their arms, and Shen Nong even saw the rudiments of hammers and chisels in them.

"Wu, I've found all the people. Chi stopped beside Shen Nong and introduced the four people to him one by one.

The hairless and dark-skinned man is Uncle Beibang, who is very proficient in the production of stone tools, and the stone spears and stone axes used by the warriors of the Huangqiu tribe are all from his handwriting.

Hair scattered, eyes are blank is armor, don't look at him a sloppy appearance, the production of bone products is quite exquisite, usually for the tribe people to polish some animal tooth necklaces, animal tooth bracelets, bone ornaments and other gadgets.

The man who made the knives and forks for Shen Nong was the craftsman who made knives and forks for Shen Nong, and he was the only teenager among the four.

Wearing a straw mask and two red feathers on his head, Pan is also the second craftsman in the Huangqiu tribe to be proficient in stone tool making.

"Wu!" The four of them gave Shen Nong a salute and showed their respect to him.

But Shen Nong, who is a modern person, didn't care about these vulgar etiquette, and said directly: "Ask you something, do you know what materials can be waterproof?"

"Waterproof?" The four of them glanced at each other, obviously not understanding what Shen Nong meant.

"It's the kind of material where water drips on it, and the water can't penetrate the past. Shen Nong picked up a leaf from the ground, wiped a handful of water in the stone bucket with his other hand, and then dripped all the drops of water on his hand on the leaves.

Not a single drop of water could penetrate the leaves, either sliding down the edge of the leaves to the ground or remaining on the leaves.

"Something like this. Shen Nong said.

"I know, I know. The young Cang immediately shouted: "The skin of the worm can't be penetrated by water, and it is exactly the same as what you said about Wu." ”

"Worm ......" Shen Nong was stunned, he knew the creature mentioned by the cang, the worm inhabits rivers, the body length is usually within 5-10 meters, a small number can grow to more than 13 meters, the weight can reach 220 kilograms, is a carnivore.

"Then do you know where to find the worms?" Shen Nong asked.

"Of course I know, Bai Zeli has it, and the tribe has caught two of them when they used to get water!"