Mastery of the forearm block (Yoko-uke and Nidan-uki) against body attack is the principle aim. With the elbow fully bent, learn to position it about a hand-width from the body with reliability. Releasing from the opponent who has grabbed your wrist, blocking with the elbow and counterattacking with a Chudan-zuki or elbow strike: from this kata, one can gain an understanding of the great value of this fundamental technique. The number of movements is twenty-one, and the time required is about thirty seconds. This kata is practiced in the sixth kyu level.