Great care has to be taken in folding the blankets into the shape of a piece of tofu (beau curd) with 12 corners and 16 straight lines.
「十二個稜角、十六條稜線，一個也不能少。」班長的命令在耳邊迴響。但在剛開始時，雖然又推、又拉、又拍、又捏，累得滿頭大汗，就是捏不出有稜有角的形狀。