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First step
First we draw a row of small trees, first draw three vertical lines as the trunk, and then draw the branches. Then draw the general outline of the small tree as shown in the picture below, and then draw some circles inside as fruit. After the painting is completed, we follow the same method to draw another group of small trees.
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Second step
Then we use arc in the distance Draw the shape of the hillside with lines, and draw a long city wall on the top of the outer hillside that follows the shape of the mountain as shown below. Draw several trapezoidal gates on the outer city wall as checkpoints of the Great Wall, so that the Great Wall is roughly finished
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Step 3
Finally, we drew the mountains that decorate the picture and the geese in the sky farther away, and then colored them as a whole, so that our Great Wall was finished.