English rugby is played in fifteen-a-side, ten-a-side and seven-a-side formats.

Rugby at the Olympics is played in sevens. Fifteen-a-side matches are divided into a first half and a second half of 40 minutes each, with a 20-minute halftime break. The ten-a-side game is shorter, with two halves of 10 minutes each with a one-minute halftime break. The seven-a-side format is even shorter, with each half lasting seven minutes and the same one-minute halftime break.

Fifteen-a-side rugby is the standard official rugby format, with two teams of 15 players each, and is mainly used at international level. Rugby sevens is by far the most popular and common form of the game and is officially known as Rugby Sevens, shortened to Sevens or Rugby Sevens, and is also known as "Little Rugby".

Introduction to rugby

Rugby is one of the ball sports. It is an adversarial sport on a rectangular field, through collective cooperation, shooting the ball into the goal to score or holding the ball to touch the partition of the ground to score.

Rugby originated in 1823 in Rugby, England, 1871, England Rugby Association was established in 1890, the establishment of the International Rugby Council, the International Rugby Council in 1987, the International Rugby Council organized the first World Cup Men's Rugby Championship in 1991 and organized the first Women's Rugby World Championship. 2009 October 9, in Denmark, the International Olympic Committee (IOC) held its first World Rugby Championship in Copenhagen, Denmark. Copenhagen, held in the 121st plenary session of the International Olympic Committee vote, rugby sevens was adopted as the 2016 Olympic Games competition.

The supreme organizing body of rugby is the International Rugby Board, founded in 1886. The organizing body for rugby in China is the China Rugby Association, founded on 7 October 1996.

Refer to Baidu Encyclopedia-Rugby for the above