A finely carved and highly polished nephrite jade toggle depicts a single-horned chilong dragon, with two hind legs tucked inside a circular Bi disk, its frontal body turned in an "S-curve", audaciously emerges from a Bi disk engraved with rows of endless knots. The toggle epitomizes the dragon's transformative power above space and time. It lends its owner an endowment for crossing life's barriers and overcoming obstacles. The toggle is carved in the round, in an opaque warm white hue. It has an unctuous sheen and a few tiny usage nicks that mark its years..