The emergence of rulers, compass and scales has laid the foundation for the tribe to unify weights and measures in the future. These basic metrological tools will play a great role in the formulation of astronomical calendars in the future.

Wang Lang asked Mu Feng to remove the excess part of this simple ruler, and then used a dagger to carve the marks one by one on the marked scale.

With rulers, whether it is woodworking or other manufacturing work, standardized production provides the possibility.

Rulers and compass can make the wheels made by wooden wind uniform in size, which can greatly save manpower and the house. Even if it is damaged, spare wheels can be replaced.

Wang Lang asked a deer cart to come. Mu Feng led the carpenter and spent more than an hour to change the new cart.

After assembly, Wang Lang put on Julu and wanted to try this new car.

After taking the whip handed over by his tribe members, Wang Lang sat on the car board, holding the reins in his left hand, and gently waving the whip with his right hand.

He shouted: "Go!"

Not only did the "drive!" sound left and right, but also the effect of a whip. Julu slowly pulled the car forward.

Because people often walk on the ground in the tribe, they have been stepped on so solid that they have been run over. The wheels are only broken and left with two shallow traces.

The new wheel is much lighter than the previous solid wood wheels. After the vehicle moves, the Julu pulls it with an extremely relaxed look.

Wang Lang tried several turns, but no major problems occurred.

Seeing this result, Mu Feng and other carpenters showed proud smiles.

Wang Lang jumped out of the deer cart, asked someone to remove the deer and lead it to the side and tie it up.

"Yes, this wheel is available. You can make it according to this size in the future." Wang Lang smiled.

Mu Feng nodded and said, "Don't worry, leader, as long as there is enough wood, you can get as much as the wheels."

Wang Lang nodded with satisfaction, and then said to Mu Feng and the others: "You guys, although you have made wheels, you can't be too proud. This is just the beginning. In the future, you must work hard to make other more useful things, whether they are tools or weapons."

Hearing that Wang Lang's request was so high, the few people immediately looked embarrassed.

"Chief, can you give me a prompt for this?" Mu Feng asked respectfully.

"Don't ask me everything. You have to learn to use your brain. For example, you Mu Feng, isn't the wheel you think of is very good? You can't keep a car without using your brain." Wang Lang said seriously.

Since seeing Wang Lang's "wisdom", I have indeed had the problem of not thinking. If I can't figure out anything, I will think of asking Wang Lang for advice at the first time. This time when Wang Lang warned me, Mu Feng suddenly felt a little embarrassed.

"What the leader said!" Mu Feng said respectfully.

Wang Lang nodded and said, "I'll give you a reminder this time. Next time, I'll solve it myself!"

When Mu Feng and his friends heard this, they were immediately overjoyed and hurriedly said, "Thank you, the leader!"

"After you have made this wheel, you can try to improve the crossbows and bows of the tribe. And you can try to make a car that someone can push. If you have the rest, you can observe and think about it yourself!" Wang Lang said slowly.

After hearing this, Mu Feng fell into deep thought. Those weapons were the most perfect things for him. He had basically no idea how to improve them. And how to do the car that the person could push was also no idea, and he suddenly felt extremely troubled.

Looking at the frowning look of the few people, Wang Lang smiled and said, "You should think about it slowly. By the way, as a reward for making wheels for you, you can come to my wife Fanxing to receive a pickled cucumber each afterwards."

When several people heard this, their eyes suddenly lit up. They had heard of the name of pickled cucumbers. I heard that only the elderly people from the tribes had eaten once before. It is said that they were much better than meat.

After receiving such a reward, they were immediately inspired and thanked Wang Lang repeatedly.

After Mu Feng's affairs were dealt with, just as Wang Lang was about to leave, suddenly there were whistling sounds in the sky.

Wang Lang was shocked and quickly looked up at the sky. He saw more than a dozen fireballs suddenly falling from the sky, roaring towards the east several thousand meters above the tribe.

"Meteorite!" Wang Lang exclaimed.

When the rest of the people saw such a terrible scene, they were frightened and looked deserted. They lay on the ground in horror and kept bowing to the sky.

The meteorites flying out of the sky were extremely fast and disappeared into the horizon in the blink of an eye. About half a minute later, there were suddenly bursts of violent explosions in the east. The terrifying sound was as frightening as the end of the world. Mushroom clouds more than ten meters high rose on the horizon in the east.

After hearing the explosion, Wang Lang hurriedly lay on the ground.

More than ten seconds later, the earth vibrated violently, and seven or eight thatched huts collapsed instantly. The huge shock wave caused by the explosion swept straight to the tribe with the strong wind, and countless weeds in the place where they passed were blown to the ground.

The soldiers training on the grassland were lying on the ground, and were already scared and terrified.

The strong wind blew, and the people lying on the ground were instantly blown by more than half a meter above the ground and fell heavily to the ground, and the scene suddenly became a mess.

Thanks to the protection of the city walls, the people who stayed in the tribe were protected from the aftermath of the explosion.

The shock wave came and went quickly, and everything returned to peace in a few seconds.

But the frightened people lay on the ground with trembling all over, not daring to move.

After Wang Lang stood up, looking at the messy tribe, he couldn't help but secretly glad that if these meteorites were closer to the tribe, everything here would no longer exist.

Looking at the collapsed houses, Wang Lang thought of his wife and children, and ran towards his home like crazy.

Fanxing hugged Wang He and lay in the ruins of houses, the child in his arms was frightened and burst into tears.

Seeing that his wife and children were safe, Wang Lang felt relieved Xia Li, walked over and moved the thatch and wooden sticks scattered on Fanxing's body away, gently stroked Fanxing's hair, and said, "It's okay! I'm here!"

Fanxing looked at Wang Lang with a pale face, as if he was frightened, and could not speak a word with his mouth open.

Wang Lang sighed and checked Fanxing's body. Except for the bruises that were damaged by wooden sticks on his back, there was nothing serious.

"You calm down first, look at the children, and I'll go see other tribe members."

Seeing that the mother and son were fine, Wang Lang hurriedly explained and hurriedly ran out of the city.

The situation outside the wall is much more serious than that inside the city. After that shock wave, many people lie on the ground and keep wailing.

When Wang Lang saw this situation, he felt a slump and shouted loudly: "The uninjured soldier rushed to the ground and got up!"
Chapter completed!