Tai Chi short stick, also known as Tai Chi whip. The length is about one elbow of the user's arm (about 1.2m), and the thickness (diameter) is about 3.5 ~ 3.8cm, with one end slightly thicker and the other slightly thinner. The thick end is called "handle" and the thin end is called "tip". Hold the whip stick and sharp handle with one or both hands during the drill, and change hands frequently.