Chapter 69 Drawing

Shen Qingqian was originally concentrating on drawing, but was suddenly interrupted by him. She was so shocked that she dropped the burnt branches in her hands.

"Brother Cheng, if you scare someone, you will scare them to death. Can you please make a noise next time when you walk?" Shen Qing gave him a blank look, then picked up the branch and continued painting.

Shengze felt a little uncomfortable when she said that, but he quickly squatted down and looked at the picture on the slate carefully. When he saw what she was drawing, he was so surprised that he blurted out, "Are you drawing a boat?"

Shen Qingqian said without raising his head: "No, I am drawing a raft, a raft that can run faster in the water."

"How do you know this?" Shengze couldn't help but ask.

Shen Qingqian said smoothly: "I'm just imagining it."

Shengze: "..." So you draw the picture so seriously, but it turns out you just drew it casually?

He suddenly felt a little disappointed, but he did not move away from staring at the stone slab.

The more Shengze looked at it, the more he felt something was wrong. This girl had scrawled on everything. She even marked the length and width!

Shengze couldn't help but turn his head to look at Shen Qingqian's face. She was painting very seriously, clasping her fingers and mumbling something to herself as she painted.

Now Shengze can be sure that she did not draw casually, and the raft in this picture can definitely be made.

A quarter of an hour later, Shen Qingqian let out a long breath, hugged the slate and smiled with satisfaction, "Finally the painting is done."

The history of human navigation is long and cruel. At first, people got inspiration from ants on leaves. Later, people carried wood and drifted in the water, then simple rafts, simple boats... until modern aircraft carriers.

What they need now is just a raft that can provide some safety. Compared with those complicated ships, the information in Shen Qingqian's memory can still be made using everything at hand.

"Let me take a look." Shengze couldn't wait to take the slate from her hand and looked at it very seriously.

Shen Qingqian didn't stop it, after all, it was up to them to make it happen.

"Why are the lengths different here?" Shengze asked, pointing to a place.

Shen Qingqian looked at it and explained: "Because the resistance direction of water will change, different lengths will cause different forces..."

She tried her best to express it in a language he could understand, speaking very carefully.

Shengze kept hearing unfamiliar words from her mouth, but at this time, he had no time to think too much.

Shen Qingqian finally finished speaking and quickly picked up the water bag and took a sip of water.

"Adding this in front will speed up the raft's progress in the water?" Shengze asked, pointing to the fan blades in front of the raft.

Shen Qingqian nodded, "Yes, but you need someone to keep pulling on the rope that controls the direction. But I don't know how to tell you this, because it's just my own random imagination."

She really didn't know how to explain the design principle of this two-way spiral fan to an ancient person.

In fact, she just added a simple power system to the front of the existing raft, reducing parts as much as possible.

Conditions are limited, so this is the most suitable thing that can be made at present. The fan blades are made of branches and leaves with sufficient toughness. Other small parts can be fired with suitable clay, because they are only used once, so there is no need to be too strict. Require.

In short, she believed that Cheng San would definitely have a way to do it.

Shengze took the slate and looked at her deeply, "I'll go find them to discuss it."

Shen Qingqian quickly grabbed him, "Can you please stop saying that I drew it?"

Shengze's eyes were dark, and he nodded after a while, "Okay."