After returning from the training ground, it was almost noon, and after hurriedly accompanying Deng Qianshan and Du Sanniang to lunch, Deng Yueru came to the front of the meeting hall. Here, Zhang Xin was already waiting with a scout team of nearly ten people.

"Lord, these are the most capable and experienced scouts in the cottage. This is Sun Xing, this is Zhao Yong, the two of them are the old men of the dart game, scouts who can draw maps. ”

Seeing Deng Yueru coming, Zhang Xin stepped forward and introduced Sun Xing and Zhao Yong to her.

"Hello owner!"

Under the leadership of Sun Xing and Zhao Yong, everyone hugged their fists towards Deng Yueru and saluted.

"Okay, you're all my best scouts in Luoyun Village, and now I need each of you to be able to master how to draw maps. After that, we have to set out to explore the terrain around the cottage clearly, especially to indicate where it is suitable to set up a village, where it is suitable to ambush the enemy, where it is easy to be attacked by the enemy, etc., do you understand? ”

Nodding to everyone, Deng Yueru directly said her request.

Although Pei Guangqing is now busy dealing with the Qincha and has no time to attack the cottage, everyone knows that this buffer will not be too long, so they all race against time to make all preparations, just to deal with the encirclement and suppression of the government in the future.

"Understood!"

Before coming, Zhang Xin had already told them about their mission, so everyone knew what they had to do.

"Sun Xing, Zhao Yong, you first draw a topographical map around the cottage, I want to see how well you can draw a map."

Deng Yueru waved her hand to Shuangxi behind her, and Shuangxi immediately took people and sent the pen and paper to Sun Xing and Zhao Yong.

The pen handed over to the two was a charcoal pen made of charcoal by Deng Yueru who specially asked people to use fired charcoal, and the outside of the carbon strip was tightly wrapped with yellow paper and paste to make it easy to carry and use. Afraid that the two of them would not use it, Deng Yueru demonstrated it on the spot, which amazed everyone.

Sun Xing and Zhao Yong took the charcoal and paper, although it was also very novel, but after all, the two were in their thirties, and they were very mature and stable. After taking the written test and scribbling twice on the paper, he calmed down and stopped being curious about the material of the pen.

Because scouts often need to draw temporary maps outside, and there may not be tables and chairs, Sun Xing and Zhao Yong also understood that Deng Yueru wanted to test themselves, so they took a pen and paper and sat directly on the ground and began to draw.

Although it has been a long time since the two have specifically surveyed the terrain and drawn a map. But the craftsmanship of the two has not been left behind, and they usually still paint the terrain in and around the cottage. So Deng Yueru asked them to draw a map of the surrounding area, and both of them drew quickly and skillfully.

In less than a quarter of an hour, the two of them stopped writing and stood up, and handed over the drawn topographic map to Deng Yueru.

"Not bad."

Although the lines drawn by the two are simple, they are all clear and clear, and next to the various lines, they also use words to note the topography and landforms, such as the name and height of the mountain range, the width and direction of the river, etc., which makes it seem clear at a glance.

The only fly in the ointment is that all the landforms are drawn with the same lines, which is not eye-catching enough. And there is no scale marked, and you have to look at the detailed notes next to each type of landform one by one.

But overall, it's a pretty good map.

"Okay, I already know your level of map drawing, and the drawing is good, but I will teach you a little bit more map drawing skills, and I will mark the scale on the map so that it is easier to see the map more clearly."

Comparing the map drawn by Sun Xing and Zhao Yong with the map left at the bottom before, Deng Yueru also deliberately made a scale on the old map before, and compared the two, I found that the two drew very well, and I was quite satisfied.

"Let's go into the council hall with me, and I'll be in the council hall this afternoon to teach you some tips for drawing maps, and what terrain to use with some special symbols, as well as the application of scales."

After speaking to the excited and curious crowd, Deng Yueru walked into the council hall with double happiness.

Zhang Xin was also very curious about these new things in Deng Yueru's mouth, and immediately followed him into the council hall, wanting to steal the teacher.

In the council hall, a large wooden blackboard was hung on the wall, which Deng Yueru asked Jiang Bin to help make it, and the wood was painted with black lacquer and tung oil to make the blackboard surface smooth and waterproof. Chalk is also made of lime, which is almost the same as modern chalk.

After letting everyone do a good job, Deng Yueru gave everyone paper and charcoal so that they could make study records. After that, he explained what a scale is and how it can be used on a map.

"Do you all remember? This is actually very easy to understand, we first mark the direction of the map under the map, southeast, northwest, and then mark the map on the map on a centimeter to represent the actual landform of the number of miles, so that people can understand how big this place is when they look at the map. ”

Using chalk to draw a simple diagram on the blackboard, Deng Yueru looked back at the people who were struggling to write.

"Understand, understand, it's much easier and clearer to draw like this than if we were to make a lot of notes on the side."

After all, Sun Xing and Zhao Yong had skills, and they understood the meaning of the scale as soon as they heard it, and nodded again and again while making records.

"In fact, if you are afraid that you will not be able to grasp the accurate proportions of the drawing, you can use the method of 'drawing in the plan'. Before drawing, first draw a square on the paper, the side length of the square represents the actual mileage, and then draw the map content according to the square, so as to ensure a certain accuracy. ”

Afraid that other people are novices who can't grasp the accuracy of the scale, Deng Yueru suddenly remembered that when she was in the special energy group before, the team members who were particularly obsessed with ancient culture talked about the "plan to draw the square", so she taught everyone this ancient drawing technique.

"Okay, this is good, so that you can draw more easily and accurately scale."

As soon as he heard Deng Yueru say this method, the older Sun Xing immediately shouted excitedly, and his face turned red.

"Next, I want to teach you some terrain and landforms, and what special symbols are used to replace them. You see, we can use triangles to represent mountain peaks, swamps can be replaced by some short horizontals, and rivers can be ......"

Seeing that everyone understood the application of the scale and the 'plan to draw squares', Deng Yueru went on to explain the use of some special symbols.

Everyone listened very carefully, and everyone found that with the method that Deng Yueru called, the map drawn could be more concise, clearer, and more clear at a glance, and they couldn't help but be in awe of Deng Yueru.

Deng Yueru explained very thoroughly, even Zhang Xin understood, and then when Deng Yueru asked everyone to try to draw a topographic map of the cottage in this way, Zhang Xin also drew it like it, and he was secretly proud in his heart.