In the beginning, we wanted to use a quadrangular pyramid as the base, and then slowly cover it. As a result, the quadrangular pyramid was too fragile. We spent most of our time repairing the quadrangular pyramid. <br>We were afraid that if we made it too high, it would collapse, so we didn't cover it again. At that time, I thought to myself, it seemed a little short, shouldn't other groups make it taller than us? <br>I turned my head, and sure enough, ours is the shortest and stunted.
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