In old times, alarm bells were used by some tribes like the Rukai to send messages, while today they are still used to send signals. The wooden handle is round on top, like a spoon. The round top is carved with a motif of a human face on one side. The bell is wrapped with an iron plate, and a small piece of iron hangs inside as the cotyledon. These bells were tied around a messenger’s waist, ringing as they walked, or kept in the public places like temples.