The production of the kiln has finally begun!

With many people and great power, more than a dozen primitive people started making under the command of Zhao Yunxiang.

Several primitive people were responsible for fetching water. The Alpha tribe was close to the sea and could get sea water from the sea.

Several primitive people were responsible for carrying stones. On the west side of the tribe is a towering stone mountain. Most of the stones on the mountain are granite, and there are many gravels scattered at the foot of the mountain.

There are also some primitive people who are digging loess. There are several mounds not far from the tribe. The loess in the mounds have a viscous texture and are good clay.

"Sacred Alpha, according to your guidance, we have prepared a large amount of sea water, loess, and a lot of gravel. What should we do next?" Lin Hao acted as a small leader, and he bent down to report to Zhao Yunxiang.

"The next step is to mix sea water with loess to make mud, and try not to be too dry and hard." Zhao Yunxiang thought for a while, "Oh, by the way, find some dry leaves to mix in it, which can play a stable role."

Most of the old houses in rural areas are made of yellow mud, mainly because they did not have the conditions to use stones and red bricks. Soil houses are the mainstream in rural areas.

In order to make the house stable and resistant to rainwater erosion, many construction workers will mix some wheat dander into the yellow mud, which can be replaced by dry palm leaves.

Several primitive men found palm leaves, crushed them according to Zhao Yunxiang's instructions, and then mixed them into the loess.

The sea water pours into the loess and adds a large amount of dry palm leaf debris. Under the trampling of a group of primitive people, the soil is forming.

"This work efficiency is faster than expected!" Zhao Yunxiang smiled slightly and glanced at the sun. The sun was now in the southeast direction, and the time was about 9 o'clock.

Simba left, and the guy went to the forest, not knowing what to do. Zhao Yunxiang was not worried about the big lion at all. It was familiar with the environment here.

As for the baboon, he was following Zhao Yunxiang all the time. At this moment, it was squatting on the tree branch, holding a bone and beating a core that he found from somewhere.

The kiln can be made soon, and a timer must be made!

Most people are familiar with watches. We now prefer to look at the time on our phones because this time is 100% accurate.

The earliest prototype of a clock was a circle. The ancient Egyptians discovered that shadows would change with time.

Zhao Yunxiang is making the most primitive clocks. He first used wooden sticks, one long and one short, to combine the two into a compass, and drew a circle on the ground.

The circle has a diameter of half a meter, which is very formal, after all, it is made of a compass.

Then, using a piece of wood as a ruler, divide the circle into four equal parts. These four points are equivalent to 12 points, 3 points, 6 points, and 9 points...

When the clock rotates one circle, it is equivalent to turning 360 degrees. Cut 360 degrees into four parts, that is, four 90 degrees, 12 o'clock, 3 o'clock, 6 o'clock, 9 o'clock, which is exactly 90 degrees.

With four points as a reference, it is not difficult to find other points. 12 points and 6 points form a straight line, 3 points and 9 points form a straight line, and two straight lines intersect and slice into 4 90 degrees, finding the simplest 4 time points.

When we look at clocks, we usually always accurately find the positions of 12 o'clock and 6 o'clock. This is because of visual habits, these two points are a vertical line.

As for the circle, as long as you adjust it at will, draw two crossed lines and divide the circle, you can get 4 90 degrees.

Immediately afterwards, Zhao Yunxiang drew 1 point and 7 point, 4 point and 10 point, and the two lines intersected at 4 90 degrees. When these two lines were portrayed, they were obviously shorter than the previous two lines. Zhao Yunxiang also wrote the time point online where they contacted the circle.

Immediately afterwards were 2 o'clock and 8 o'clock, 5 o'clock and 11 o'clock, and so on, Zhao Yunxiang used the simplest circular slitting method to find the time point exactly the same as the clock.

Then, a arrow was placed in the center of the clock on the ground. Among the dozen arrows, one of the arrows was a bit dull, so just use it as a watch hand for the clock.

The arrow stands at the center of the clock, the sun shines down, and the shadow of the arrow is projected at 11 o'clock.

This time is disordered because of angle, time absolutely does not correspond to the current time.

However, the shadow covers 11 o'clock, and after 3600 seconds, the shadow will definitely move to 12 o'clock or 10 o'clock.

Because the clock is made based on the shadows illuminated by the sun. After 3600 seconds, the shadows will move 30 degrees. The clock made by Zhao Yunxiang cuts a 360-degree circle into 12 equal parts, and each adjacent time point is 30 degrees apart!

"Great Alpha, what are you making?" Lin Hao rubbed the ground hard. Because he had been trampling on the yellow mud for a long time, a lot of yellow mud was stained on the soles of his feet.

The soles of the feet were stained with thick mud, and it was indeed uncomfortable to walk. Lin Hao habitually rubbed his soles on the ground, trying to rub off the sticky yellow mud attached.

"This is called a clock and has also been used as a timer!" Zhao Yunxiang said, "In order to strictly control the time during the process of firing pottery, I specially made this."

When making pottery, temperature and time must be strictly controlled, which is closely related to the yield rate of burning.

Of course, the firing requirements of porcelain are even more harsh. Plateau soil is required, and the furnace temperature must reach more than 1,200 degrees. Zhao Yunxiang does not have these two points alone.

"So amazing..." Lin Hao's mind was quite useful. He immediately fell into deep thought when he looked at the cumbersome numbers and complex depictions on the ground.

The most primitive clocks are completely restricted by the weather and must be used during the day when there is sun.

"You will collect some loess and sea water. This is not enough. In addition, look for more firewood. We will strive to make a larger kiln and burn bricks and smelting iron in the future." Zhao Yunxiang's idea was very avant-garde, and he wanted to develop civilization.

"Okay!" Lin Hao nodded, and then he started to be busy with a group of primitive people.

As for Brother Xiang, he was fiddling with the clock again. Now the sun shines on the wooden sticks, and the shadow is still very long. He needs to wait until 12 noon.

Because the sun at 12 o'clock is hanging on the head, the length of the shadow is almost zero.

It will take a long time to wait until 12 o'clock, at least 2 hours, and you can do a lot of things within 2 hours.

Zhao Yunxiang is a very diligent and knows how to use time. He took out shells from his backpack and began to smash and crush them with stones.

Shells are natural calcium carbonate. Oyster shells can be made into interior decorative paint after being crushed.

Of course, Zhao Yunxiang doesn’t want to make paint, but mark it!

After more than ten minutes, the shells were basically crushed. Zhao Yunxiang used leaves to pack the shell powder, and then shook the outline and needle of the clock to add a layer of white powder.

On the black and yellow land, there is a white clock that looks very eye-catching. As for the time number, it needs to be re-engraved again. It must be marked at 12 o'clock when the shadow of the wooden stick is 0.

Find a point and sort the rest in this way!

The clock is OK for the time being. Zhao Yunxiang looked at a group of primitive people not far away. They had collected a lot of stones and mud.

"We can finally make a kiln." Zhao Yunxiang walked over slowly and picked up a stone on the ground. The stone felt heavy in his hand.

“Huh??”

"This stone?".

Zhao Yunxiang frowned and looked at the stone in his hand incredibly. The color was a little dark red and the smell smelled a little pungent.
Chapter completed!