Miguel Diaz, Eduardo Venturino, Augustin and Shilai Liu on British Polo Day. Photo provided to China Daily

Hands: Unit of measure for the height of a horse. One hand equals about four inches.

Hook: Catching an opponent's mallet in swing below the level of the horse's back, to leave or turn the ball for a teammate.

Pass: To hit the ball forward or laterally to a teammate.

Penalty: Numbered from 1 to 10, a free hit is awarded to the fouled, from a set distance determined by the severity of the foul committed.

Positions: There are four players on a team, numbered 1 through 4, each with different offensive and defensive responsibilities.

Stick: The polo mallet.

Stick and ball: Personal practice time.

Tack: All the equipment used on a pony.

Tail shot: Hitting the ball behind and under the horse's rump.

Third man: The referee sitting at the sidelines. If the two umpires on the field are in disagreement, the third man makes the final decision.