Yu-Sin (or Yoo-Sin) is named after General Kim Yu-Sin, a commanding general during the Silla Dynasty who played an important role in the merger of Goguryeo and Baekje by Silla. The 68 movements refer to the last two figures of 668 AD the year the three kingdoms were unified. The ready posture signifies a sword drawn to the right rather than the left side, symbolizing Yoo Sin's mistake of following his king's orders to fight with foreign forces (Tang Dynasty of China) against his own people (Goguryeo and Baik-je).