The advent of rulers, compasses, and scales laid the foundation for the tribe to unify weights and measures in the future, and these basic measuring tools would play a great role in the formulation of the astronomical calendar in the future.

Wang Lang asked Mu Feng to remove the excess parts from the rudimentary ruler, and then used a dagger to carve traces on the marked scales.

With a ruler, whether it is carpentry or other manufacturing work, standardized production is possible.

The ruler and compass can make the wheels made of wood wind uniform in size, which can greatly save manpower and the house, and even if it is damaged, there can be spare wheels to replace.

Wang Lang asked people to bring a deer cart, and Mu Feng led the carpenter and spent more than an hour to replace the new car wheel.

After the assembly was completed, put on the giant deer, Wang Lang was eager to try this new car.

Taking the whip handed over by the clansmen, Wang Lang sat on the car board, holding the reins in his left hand and gently waving the leather whip with his right hand.

He shouted softly: "Drive! ”

It's not just this "Drive!" It played the left and right, or the effect of a leather whip, and the giant deer slowly pulled the car and walked forward.

The ground in the tribe has long been trampled on by people because of the frequent walking, and the wheels have run over and left only two shallow traces.

The new wheels are much lighter than the previous solid wood wheels, and when the vehicle moves, the giant deer pulls with great ease.

Wang Lang tried a few turns and didn't have any major problems.

Seeing this result, Mu Feng and these carpenters all smiled proudly.

Wang Lang jumped down from the deer cart and asked people to unload the giant deer and take it aside and tie it up.

"Yes, this wheel is available, you can make it to this size in the future." Wang Lang said with a smile.

Mu Feng nodded and said, "Don't worry, leader, as long as there is enough wood, there will be as many wheels as there are." ”

Wang Lang nodded with satisfaction, and then said to Mu Feng and the others: "You guys, although you have made the wheel, you can't be too proud, this is just the beginning, in the future, you have to make other more useful things with your heart, whether it is tools or weapons." ”

Hearing that Wang Lang's request was so high, several people suddenly looked embarrassed.

"Chief, what to do exactly, can you give me a hint." Mu Feng asked respectfully.

"Don't ask me about everything, you have to learn to use your own brain, such as you Mu Feng, isn't it good to come up with this wheel yourself, you can't maintain the habit of using your own brain." Wang Lang said solemnly.

Since seeing Wang Lang's "wisdom", he does have the problem of not liking to think, if there is anything he can't figure out, he will think of going to Wang Lang for advice at the first time, this time he was warned by Wang Lang, Mu Feng suddenly felt a little embarrassed.

"That's what the leader said!" Mu Feng said respectfully.

Wang Lang nodded and said, "I'll give you a hint this time, next time it's not a big deal, just solve it yourself!" ”

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

"After you have made this wheel, try to improve the tribe's bed crossbow and bow, and you can try to make a cart that can be pushed by one person, and you can observe the rest for yourself, think for yourself!" Wang Lang said slowly.

After listening to this, Mu Feng fell into deep thought, those weapons were already the most perfect thing for him, and he basically had no idea how to improve them, and how to do the car that person could push, he also had no idea at all, and he suddenly felt a headache.

Looking at the sad faces of several people, Wang Lang smiled and said: "You can figure it out slowly by yourself, by the way, as a reward for making wheels for you, you can go to my wife Fanxing in a while and receive a pickled cucumber for each of you." ”

When a few people heard this, their eyes suddenly lit up, they had already heard of the name of pickled cucumbers, and these scarce things, I heard that only those old people of the tribe had eaten them once, and they were said to be much more delicious than meat.

After receiving such a reward, they were immediately encouraged and thanked Wang Lang again and again.

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

Wang Lang was startled, and hurriedly looked up like the sky, only to see more than a dozen fireballs suddenly falling from the sky, whistling towards the east thousands of meters above the tribe.

"Meteorite!" Wang Lang exclaimed.

When the rest of the people saw such a terrible sight, they immediately turned blank in fright, and they lay on the ground in horror and kept bowing to the sky.

The meteorites flying from outside the sky were extremely fast, and they disappeared into the sky in the blink of an eye, and about half a minute later, there were suddenly bursts of violent explosions in the east, and the terrifying sound was as terrifying as the end of the world, and a mushroom cloud more than ten meters high rose on the horizon in the east.

After Wang Lang heard the explosion, he hurriedly lay on the ground.

More than ten seconds later, the earth shook violently, and the simple thatched huts collapsed seven or eight in an instant, and the huge shock wave caused by the explosion swept straight towards the tribe with a strong wind, and countless weeds were blown to the ground in the land.

The soldiers who were training on the grassland, lying on the ground, were already frightened at the moment.

The wind blew, and the people lying on the ground were instantly blown off the ground more than half a meter high and fell heavily to the ground, and the scene was suddenly 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 as fast as it came, and after a few seconds everything was calm again.

But the frightened people trembled and lay on the ground, not daring to move.

After Wang Lang got up, he looked at the chaotic tribe, and couldn't help but secretly rejoice, 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 tremblingly and lay in a ruined house, and the child in his arms was frightened and cried loudly.

Seeing that his wife and children were safe and sound, Wang Lang relieved Xia Li, walked over and removed the thatch and wooden sticks scattered on Fanxing's body, 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 stupid, and he couldn't say a word with his mouth open.

Wang Lang sighed and checked Fanxing's body, except for a few bruises on his back that had been smashed with wooden sticks, there was nothing serious.

"You calm down first, take care of the child, and I'll go see the other clansmen."

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

The situation outside the walls was much worse than inside the city, and after that shockwave, many people lay on the ground and wailed.

Wang Lang's heart sank when he saw this situation, and he shouted loudly: "The soldiers who are not injured quickly rush to the ground and get up!" ”

The terrified soldiers lay motionless on the ground, and even the leaders of Lin Huo and them curled up on the ground as if they hadn't heard Wang Lang's words, terrified.