ChungMu was the name given to the great Admiral Yi Sunsin of the Yi Dynasty. He was reputed to have invented the first armored battleship (Kobukson) in 1592, which is said to be the precursor of the present day submarine. This pattern is required of the Taekwondo student testing for his/her black belt. In this video Grandmaster Javed Khan instructs this pattern from 4 different angles/views.