"You guys come and see this. Shen Nong pointed to the design drawings carved out by himself on the opposite stone wall and said, "Do you have the confidence to make it?"

Hearing this, Cang and Xuan Jia walked directly to the front of the stone wall to take a closer look, I have to say that Shen Nong's painting ability is still good, several design drawings on the stone wall are all drawn clearly, and the shape and use of each part are standardized, so as to prevent Cang and Xuan Jia from not being able to understand.

"It's ...... Hmm! What a wonderful idea! Carving two pieces of wood into this shape without edges and corners, and then adding a log in the middle, can you drive these two pieces of wood to turn, Wu, what is the use of these two pieces of wood?" Cang turned to Shen Nong and asked.

"What wood is not wood, call it a wheel, the wheel is a good thing, with it, we only need to send one person to take on the work that several people can do. Shen Nong chewed a mouthful of white radish and continued: "These two wooden wheels are a part, and the 'mortise and tenon structure' next to them has not been seen, you two must learn this structure, so that we can make a board car without nails." ”

"Wu, what is the cart?" asked the armor puzzled.

"Then you look to the left, and the tool that lays the rectangular board on the wooden wheel is the board cart, with which even ordinary people can drag the east food on the backs of three people. Shen Nong pointed to the mural on the left side of the armor and said.

"And this kind of thing? It's amazing, it's just two pieces of wood without edges and corners and a wooden board with a handle, how can you drag the food on the backs of three people?" Cang and the armor gathered in front of the design of the board car and carefully observed, for a while they couldn't accept this kind of advanced design that Shen Nong provided them.

For primitive people, wheels, mortise and tenon joints, and carts are indeed a little too advanced.

"Don't just patronize the carts, shovels and hoes, and give me a closer look, I'm going to break ground in one place in a few days, and I'll need these tools when the time comes, and you two will try to make me a few in the next few days. Shen Nong leaned against the stone wall and said.

"Wu, these tools are too delicate for polishing, you see this small hole, it must be polished to the point where this wood can be inserted, and the two of us will definitely not be able to do much in a few days. Cang pointed to the structure of the hoe on the stone wall.

"Then call Dipang and Pandu to do it together, they are two stonemasons, and they should be able to help you. Shen Nong said.

In the Huangqiu tribe, bone products and stone products are very strictly divided, bone products are easy to polish and carve, easy to start, but the texture is not too hard, it is easy to break, and only two people in the entire Huangqiu tribe are the masters of bone products.

The texture of the stone products is very hard, and the stone spear made of stone is the favorite weapon of the warriors, but at the same time, the corresponding defect is that it is extremely difficult to polish, and it is very time-consuming and laborious, and the number of stonemasons in the Huangqiu tribe is quite a lot, but there are only two people who can really talk about the craftsmanship and experience.

For tools such as hoes, shovels, and pickaxes, Shen Nong's first concern is their hardness and durability, not how similar the appearance of Cang and others after making them is similar to the shape he painted on the stone wall, so Shen Nong directly asked these tools not to be so particular about the production of details, but the materials must be made of stone, and the bones of wild beasts are not allowed, which to a certain extent increases the difficulty of craftsmen to make them.

"Okay. Cang nodded: "Let's do it." ”

"Wait. Seeing that these two people were extremely anxious to leave, Shen Nong hurriedly shouted: "Do you remember the pictures I drew before leaving?" Zisang, you draw these pictures on the animal skin and give each of these two people a copy. ”

"Yes!" It is the glory of everyone in the Huangqiu tribe to be able to do things for Wu, Zisang was naturally very happy when he heard Shen Nong tell him to do things, and immediately walked to the stone wall, took out all the painting tools in his animal skin package, and planned to show his hand in front of Wu.

Shen Nong has always been very curious about the painters in the tribe, because in this era, there are people who can rely on painting as their own work, which is simply a wonderful flower in the primitive era.

Zisang took out a bone stick about two palms long and the thickness of a thumb from the package, a bone bottle polished from the thigh bone of a beast, and two white animal skins. I saw that he poured the red beast blood contained in the bone bottle into a fine hole at the end of the bone stick very neatly, and then held the bone stick and began to shake it.

When he shook it three or four times, the slender end of the bone stick suddenly dripped red beast blood, Zi Sang saw this and quickly stopped his movements, he sat cross-legged on the ground, spread the white animal skin on his legs, and then held the bone stick against the pattern on the stone wall and copied it on the animal skin.

Seeing that he copied it with a clear eye, Shen Nong couldn't help but nodded, he didn't expect the Huangqiu tribe to point out the branch of painting on the science and technology tree, looking at the use of the bone stick in Zisang's hand, it is clearly the predecessor of the fountain pen, and it is not too much to call it the great-great-ancestor of the fountain pen.

The bone bottle should contain the special animal blood mixed with plant powder, which is used to prevent the pattern drawn by the painter on the animal skin from fading and fading due to external reasons.

Zisang's attitude is very serious when he paints, but this ability to draw is far from Shen Nong's, if Shen Nong's design drawing can be rated as 8 points, then it will only be 5 points in Zisang's hands, but fortunately, the structure of these tools proposed by Shen Nong is very simple, and the painting will not affect the viewer's visual experience at all, Shen Nong should open his eyes and close one eye.

After about half a moment, Zisang finally painted the two animal skins, and he couldn't help but breathe a sigh of relief, handed the two animal skins that had been dried up to Cang and Xuan Jia and said: "Brother Cang, Brother Xuan Jia, my painting is not as beautiful as the witch carving, but it is basically the same." ”

"I know, I know, I'm already very satisfied that you kid can have this level, can I still let you compare with Wu? Wu is painted on the stone wall like I saw with my own eyes. Kura took the hide and smiled.

Hearing this, Shen Nong was inexplicably embarrassed, at most he had learned sketching for five or six years, if he let an art student from the Academy of Fine Arts paint, I am afraid that he would be able to paint Cang and others on the spot to doubt life, Shen Nong had seen an art student painting on the street in 3D before, that kind of painting is the same as the real thing when you stand and look at it from a certain angle, and it is more than enough to be scary.