+ 口 mouth Two little aliens standing on top of each other, trying to look tall. The one on top is wearing a top hat pulled down so you can only see his mouth; the bottom one is just a mouth under a hood.
In the capital, men with top hats and big mouths accomplish very little. Or remember the first two elements as the top half of 高 tall: In the capital, tall buildings make people feel very small.
Think of a math problem: What is the circumference of this opening in the ground? If you don’t want to do the math, you’ll have to wrap a measuring tape around the edge of the hole to find out. Element meanings: circumference, lap (e.g. of a track.) Although the first two strokes of circumference look somewhat like 冂 hood, note that the first stroke has an outward curve instead of a vertical stop. You may wish to give this form a new name, measuring tape, to avoid confusion.
schoolhouse has not one chimney, but 1-2-3 (like ABC). Pay attention to the direction of the drops: the first two move from left to right, the last one from right to left.