Empty force is a term used in martial arts to denote the expression of force without making physical contact. Whether or not this force actually exists is the subject of debate in the martial arts community.
People who believe in the empty force claim "Ling Kong Jing, the "Empty Force," is the highest martial arts skill in China. This extraordinary technique harnesses the power of chi, the body's vital energy, enabling masters of the art to defend themselves against opponents without making physical contact."[1] Some proponents of martial arts are skeptical about demonstrations of empty force and dismiss them as tricks.