Chapter 716

What questions do you need for her brilliant brain from the twenty-first century?

Ye Qingxin squinted, touched Qi with his elbow, and said with a light smile, "I don't know if there is anything that Leader Qi doesn't understand, and I need the guidance of this goddess?" ”

Qi hooked his lips slightly, imprinted a kiss on her forehead with pity, and said slowly:

"Goddess, I would like to ask what is the way to make the water flow to a high place? The pool is in the woods, and although it is not far from the tribe, it is located a little lower than the tribe.

I want the males to dig a ditch and draw water to the Apocalypse Tribe, but the pool is so low how can the water flow over? ”

Ye Qingxin thought about the position of the pool, in the mountain forest that sloped downward, it was indeed lower than the Apocalypse Tribe, no wonder it would be difficult to stop Qi.

However, this question is trivial to Ye Qingxin.

She doesn't even need to run her smart brain, she can solve it directly with common sense in life.

"It's simple, make a waterwheel." Ye Qing said proudly.

"What is a waterwheel? How? Kai knew that her female would have a way, and sure enough, she heard another word that she didn't know what it was.

"It's unclear, you come with me." Ye Qingxin grabbed Qi's arm and dragged him to a bonfire.

She took one from the firewood, blew out the flames on it, and drew a waterwheel on the slate.

"Now, this is the waterwheel." Ye Qingxin pointed to the simple diagram and explained:

"Here is the shaft of the waterwheel, this is the fan blade, put the fan blade on the shaft, and then use two tripods to prop up the waterwheel and put it into the water.

The fluidity of the water source is small, so it needs to be used manually. We make an I-shaped pedal on each side of the shaft, and the two males stand on it and step on it, turning the fan blades, and the fan blades will send the water out. ”

Qi narrowed his eyes slightly, as if he was trying to digest Ye Qingxin's stick figure-like pattern.

"Understood?" Ye Qingxin saw that he didn't speak for a long time, and asked hurriedly.

Unable to conceive in his head, Qi shook his head, "I don't really understand." ”

"Uh...... Well, I'll make a model for you to see. Ye Qingxin's face was full of black lines, she couldn't blame Qi for not being able to read it, and her paintings were indeed too abstract.

Alas, traveling through the ancient times will not inspire her a new survival skill...... Do carpentry, right?

Ye Qingxin found some wooden sticks from the firewood, pierced a few holes with the tip of a copper knife on a finger-thick wooden stick, and then cut a few pieces of wood and inserted them to make six fan blades.

Next to the fan blades, two pieces of wood are inserted for manual pedaling.

Later, she made two more tripods, using a wooden stick with a wooden fan as a shaft, and inserted it tightly on the railing under the tripod.

At the top of the two tripods, a tree branch is erected as a handrail.

After a long day of work, a small crooked model was finally done.

Not to mention, Ye Qingxin himself is very satisfied with this handmade work.

This is the fastest and best model she has made since she was a child.

Ye Qingxin took a clay plate, put water in it, put the tripod on both sides of the clay plate, adjusted the height of the fan blades, and then moved the foot pedal with his hand to let the fan blades rotate slowly.

"Whoa...... Whoa......"

The fan blades beat happily.