Cuju, or Ts´u Chu is an ancient Chinese football game, also played in Korea, Japan and Vietnam. It is a competitive game that involves kicking a ball through an opening into a net. The use of hands is not allowed. It is seen by FIFA as the earliest form of football for which there is evidence, being the first mentioned as an exercise in a military work from 3rd-2nd century BC.
It has been credited as being the earliest form of football which gradually leads to the invention of modern football.