The word sipjin is derived from the principle of longevity which maintains there are ten creatures of long life: sun, moon, mountain, water, stone, pine tree, herb of eternal youth, turtle, deer and crane. This Poomsae symbolizes the longevity humans derive from these everlasting elements of nature.
The line of movements is the Chinese character for ten, symbolizing the ten creatures of long life and the infinity of the decimal system.
There are 31 movements in Poomsae Sipjin. This form is for the 5th Dan.