Qianball
Qianball is a racket sport similar to tennis or squash. The sport  originated from Chinese Qianlongball, and was popularized in Denmark with their own organization, the KFUM.The game can be described as a mixture between tennis and squash or as squash without walls. The game can be played by two or four players, or by a single person practicing. Qianball can be played on any flat hard surface, indoors or outdoors, no matter the weather. The game is played on a court a little smaller than a tennis court with both players placed on the same side of the net.