"Climbing the wall like a lizard," for example, was certainly easier in ancient times when walls were rough and uneven and made of clay and stone. And as for "leaping up to the rafters in one bound," that little trick may have been accomplished with the aid of a rope.
以「壁虎功上城牆」來說，古代的牆壁不似現在的光滑，泥土石塊、凹凹凸凸，可以找到踏腳處，逐步而上；「一躍上樑」則可能是以繩索鉤住或套住屋樑，然後如現在的登山、攀岩者，沿繩而上。