Pyongyang, North Korea. At the Taekwando Palace in Pyongyang, a group of athletes simultaneously execute a tul, a series of offensive and defensive techniques against one or several virtual adversaries. A tul is the equivalent of a kata or pattern of moves in Karate. There are 24 tuls, one for every hour of the day. In the foreground, stacks of tiles and (30 x 30 cm) pieces of wood that the athletes will break with their hands and feet in order to demonstrate kyok-pa, the art of breaking boards, bricks and tiles.