I didn't find a suitable tree today, although it was a little frustrating, but Wang Lang still didn't plan to give up like this, he planned to look for two more days, if he still didn't have it, he could only find a random wood.

The remaining two wheels have been processed, and the planks used to make the carriages have been sawn and stacked neatly.

Now the last axle has not been solved, as long as there is an axle, the world's first real car can be made, he secretly prayed to God, hoping that in the next few days, he can successfully find the tree he wants.

I don't know if it was his prayers that had an effect, or if the emperor lived up to his painstaking efforts, and after two consecutive days of fruitless searching, on the third day, a kilometer away from the tribe, Wang Lang finally found a relatively hard tree.

The tree in front of him has dark gray bark, Wang Lang doesn't know what the name of this tree is, this tree is not thick, that is, seven or eight meters tall calf thick, the most important thing is that the wood is very hard, and the bronze axe only leaves shallow traces when cut down.

Seeing this effect, Wang Lang knew that his good luck had come, so that people remembered the appearance of this tree and began to look for other similar trees nearby.

It didn't take long to find dozens of these trees not far away, but they were all of different thicknesses, the thickest ones even reached fifty centimeters in diameter, and the thin ones were only about ten centimeters.

Too coarse to process, Wang Lang chose a few with a diameter of about ten centimeters for people to cut down, although this tree is very thin, but the difficulty of cutting is no less than cutting down the kind of big tree that makes wheels, after cutting a tree, the axe even collapsed out of the gap.

When cleaning up the branches, Wang Lang found that the fruit of this tree was more peculiar, this fruit mixed with the leaves, growing together in bunches, looked a bit like lentils, Wang Lang did not have the dedication of Shennong to taste a hundred herbs, and he did not dare to try this unknown thing casually.

The tree was found at noon, and it was now nearly dusk, and it took five or six hours to cut down three trees and break two axes, so you can imagine how hard the tree was.

For the sake of safety, while the sky was still dark, Wang Lang decided to return to the tribe, and with these three trees, it was enough to make four or five axles.

The trunk of the tree was seven or eight meters long, very heavy, and three or four people carried a tree, slowly moving towards the department, and it took a long time to walk a kilometer, and when they returned to the tribe, it was completely dark.

When the people who stayed in the tribe saw that Wang Lang had not come back after they had gone out, everyone was very worried, and they lit many torches and looked in the direction where the people had left.

It wasn't until they saw a few familiar figures appear in the night that people's hanging hearts were completely relieved.

After returning to the tribe, the people who resisted the wood all the way were already tired and sweating, and drank a few large bowls of water before relieving themselves a little.

"Patriarch, why did you come back so late, if Kong Er hadn't stopped me, I would have ridden out to find you on a deer." Bark said with some complaint.

Wang Lang smiled a little embarrassedly and said: "Kong Er is right to stop you, it is too dangerous in the dark night, this time it is my reason, the tree is too hard, it has delayed a lot of time, and it makes you worried." ”

Bark pursed his lips and said, "If something happens to the patriarch, if the fire comes back, he will have to beat me to death." ”

Wang Lang chuckled and said: "What can happen to me, I am not made of mud, with our ability, ordinary beasts can't do anything to me." ”

The bark was still retorting, Wang Lang waved his hand and said, "Let's eat first, the clansmen are tired for a day and are already hungry." ”

Bark sighed, he didn't want Wang Lang to put himself in danger, but Wang Lang's stubborn character made him helpless, shook his head, and walked over to let the women prepare food.

After a night's rest, the next day Wang Lang began to prepare to make the vehicle.

Once all the materials are prepared to make the vehicle, all that's left is to put the parts together.

The carriage is undoubtedly simple, considering the bearing capacity of the wheels Wang Lang did not make the carriage particularly wide, only about one meter five wide, it is such a carriage, he is very worried about whether the wheels can withstand it when carrying goods, but no matter how small, there is no practical value.

In order not to repeat the useless work, Wang Lang planned to make a trial first, arranged some people to make the carriage, and took some people to process the axle part himself.

The extremely hard wood was stripped of its bark, and after being cut a little wider than the carriage with a saw, the men used a chisel to make a shape about the size of a hole in a wheel.

Due to the hardness of the wood, the process was extremely slow, and it took half a day for the hand holding the chisel to go numb before completing an axle.

Wang Lang asked people to put the wheels on the axles, due to the limitations of technology and tools, the wheels showed some shaking, which was inevitable, and this problem was easy to solve, as long as some wood chips were found to fix the exposed gaps.

Since the wheels in operation are easy to fall off, Wang Lang found a piece of charcoal and drew a line on the outside of the wheel where it intersected with the axle, and he planned to tie a wedge in this place to prevent the wheel from falling.

After doing this, everyone unloaded the wheels and began to chisel in the position that Wang Lang had drawn with charcoal.

The processing of the axle was about to be completed, and Wang Lang handed over the rest of the work to the others, and walked aside to check the progress of the carriage.

The carriage was well made, with pieces of wood joined by blocks and brass nails to make it look like a wooden box without a lid.

The wood of the wheel has been chosen, and two pieces of wood more than two meters long have been processed into a thick and thin rectangular shape, which is quietly placed on the side.

Seeing that the carriage was basically completed, Wang Lang smiled with satisfaction, the last part is the parts connecting the carriage and the axle, because it is wood grinding wood, ordinary wood may break after grinding a few times, in order to increase the service life of the vehicle, the harder the material is of course, the better, this thing Wang Lang intends to use the kind of wood of the axle to make.

However, the trees cut back are relatively thin and cannot meet the requirements, so we can only wait until tomorrow to cut down another tree and come back.

It didn't take long for Kong Yi to come over and tell Wang Lang that the axle had been processed, Wang Lang's eyes lit up, and he followed Kong Yi to check.

After inspecting the holes in the wedges, he nodded in satisfaction, and asked everyone to attach the wheels, staple them with wood chips in the gaps, and then staple the wedges to the axles to prevent the wheels from falling off.

After the assembly, it looked like a much enlarged barbell, Wang Lang called a few people to push the two wheels forward, and the heavy wooden wheels slowly rolled forward for a distance under the action of inertia, leaving two shallow traces on the ground.