"Come, use a drill to make a mark here."

Looking at the stunned appearance of the Wu people, Han Dashenzi, who was very useful in his heart, pretended to be light-hearted, and stretched out his hand to point at the mark he twisted out with a wooden stick.

This is the center of the circle, at this time to make a mark, save time to find the center of the circle again.

"Ahh Good! ”

He was staring at the wood in a daze on the simple compass, and was stunned for a moment, and quickly chiseled out a mark here with a drill that could not be polished.

Han Cheng used the same method to draw a circle on another stone slab, with the same radius as the previous one.

This time, without Han Cheng saying anything, the wood very consciously chiseled a shallow ditch along the circle with a hammer in one hand and a shovel in the other.

As for the simple compass, it is now in the hands of the witch.

Like a child who has been given a novelty toy, he leaves circles of different sizes on the ground, and he never gets tired of it.

The stone and the lameness of the two people who wanted to experience this wonderful tool with their own hands, waited for a while, and the witch was still full of interest, so he found himself a rope and a stick, and joined in the circle on the ground.

It didn't take long for many circles of different sizes to appear on the ground of the Blue Sparrow Tribe.

After these guys had finished painting, they stood up and admired it, and from time to time they had a silly "hey, hey, hey", and were obviously very satisfied with their masterpieces.

'These guys who haven't seen the world before. Han Cheng slandered in his heart.

'It's just a simple compass, is it so novel and fun?' ’

As it turns out, the simple compass is just that kind of fun.

Not long after the slander, Han Dashenzi also joined the ranks of drawing circles on the ground.

Moreover, his skill in drawing circles with a simple compass is obviously more than a step higher than that of witches, stones, and lame children.

The regular pentagonal pattern of five semi-circular arcs that appeared inside the circle amazed them.

It turns out that this thing can draw such a complex and beautiful pattern in addition to circles, which is really amazing.

So, after Han Cheng's joining, the addition of people who didn't really want to play immediately became interested again.

Such a simple and interesting tool was soon circulated in the Qingque tribe and was greatly welcomed by these primitive people, who were seriously lacking in entertainment.

Especially those minors, one by one, they are even more happy.

So much so that in the following period of time, large and small circles could be seen everywhere inside and outside the Qingque tribe.

Even the walls of the wall and the wall of the earthen kang have not been spared, which can be described as extremely crazy.

Wearing masks of wood, the hammer and hammer have hardly stopped in the past few days.

As small pieces of stone peel off, a fan mill gradually takes shape.

Having learned the lesson of drawing circles last time, Han Cheng did not let the wood come to the places at the bottom of the stone mill where small ditches needed to be cut, but drew lines of different lengths with small wooden boards in one hand and small stones in the other.

The wood is then allowed to be chiseled along these lines.

Of course, these lines are not rays that extend from the center of the circle to the edge of the circle, because after being dug out in this way, the further you go to the outside of the stone mill, the more sparse the grooves become, and the effect of grinding things is not very good, so they are drawn into parallel lines.

It's not easy to draw parallel lines on a circle, except for the one with the diameter as the middle line and then lining up on both sides.

The effect of the stone grinding made according to this painting method is not as good as the radial effect.

Han Cheng's method of painting is to divide the circular grinding into several parts, and then make parallel lines in these parts.

The lines between the intersections are parallel to each other.

In this way, there will be as many grooves on the stone mill as possible, and these grooves are not perpendicular to the edge of the stone mill, which can avoid the embarrassing thing of pouring beans out of the grinding hole and running out of the grooves before grinding.

It is foreseeable that the clever ancients who first invented the stone mill must not have been like this, but in the process of use, they constantly discovered the shortcomings of the stone mill and tried their best to improve it, and finally made the stone mill what it is now.

This is the advantage of a traverser, who can stand on the shoulders of giants and pick fruits, and directly absorb the wisdom that I don't know how many people have continuously improved and passed down from generation to generation.

Han Cheng was more fortunate than ordinary traversers, he was no stranger to stone grinding, thanks to the fact that he had a grinding mill at home when he was a child.

There is no shortage of things to do to make cold noodles and noodles with peas.

When Han Cheng drew the line and the wood began to clink along the line and began to chisel, the rape could also be harvested.

Harvesting rape can not wait until the rape is ripe, but some yellowing can be put down.

The reason why I am so anxious is because every plant is a good mother, and there is a way for the child to leave her own arms and survive independently.

Dandelion fitted her child with a small umbrella that could be taken away with a gust of wind, and Cang'er dressed her child in armor with a thin hook so that when an animal passed by, she could take it to a distant place.

As for pod-bearing plants such as rape and beans, the method borrowed is sunlight.

When they are fully ripe, they can easily crack the pods and let their children into the dirt.

Of course, Han Cheng didn't want this to happen, and let rapeseed enter the arms of Mother Earth, and their tribe would be busy this year.

However, this year's rape harvest and subsequent processing are much faster and easier than in the past, thanks to the many extra slaves of the Blue Sparrow tribe.

With everyone's hands in unison, within a few days, the rape was harvested and processed.

Then, taking advantage of the good weather, the land where the rapeseed had been harvested was turned over and planted with late millet.

After the planting of late millet, the planting of soybeans was gradually put on the agenda.

It would be nice if there was wheat.

Han Cheng thought with regret.

If there is wheat, you can rotate wheat and soybeans, and the time is just right, and you can harvest two crops a year, which is simply delicious.

In addition, soybean roots also accumulate a fertilizer called nitrogen, which wheat needs, and under the rotation of wheat and beans, not only will not reduce the yield of wheat, but will also help increase the yield of wheat.

The rotation of soybean and millet is somewhat unrealistic, and the growing seasons of the two are somewhat conflicting.

If you wait until the millet has been harvested before planting the beans, the most likely thing is that the beans have just bloomed and a frost falls......

It is possible to rotate with canola, although they are not a good combination.

Although I thought so, this year's soybeans did not form a pair with rape, the main reason is that the number of soybeans is a little too small.

After hesitating for a few moments, Han Cheng finally left five catties of soybeans to make tofu, and the rest of the brains were all planted in the ground.

They did not sow seeds, but sowed them into the ground with a deer-drawn cart.

However, before sowing, it is necessary to pull the wooden plank under the hopper of the columbladder to enlarge the silo eye.

Otherwise, a soybean that can be worth many grains of millet will not leak.

Although the cangyan has been adjusted as small as possible, and the sowing and sowing are as few as possible, more than 30 catties of soybeans have only been planted on more than two acres of land.

This is also due to the fact that the soybeans at this time are small, only about one-third the size of the soybeans in later generations, and if they are as large as the soybeans in later generations, I am afraid that the planting area will be less......