By the end of World War II, the art of Seon-Gwan-Moo (also Sun-Kwan-Moo, Korean: 선관무; 禪觀武) was almost lost. In the years following the war, Yang-Ik (양익 대선사; 兩翼大禪師) reassembled the remains of an old Vajrayana tradition - Keum–Kang-Yeong-Kwan (금강영관; 金剛靈觀) and developed its current style.
In the 1960s, Yang-Ik began to teach at the Bom-Oh (also Pomo,Korean – 범어사) Temple, the Korean equivalent of the famous Shaolin Temple of Chinese martial arts. One of his most outstanding disciples, Won-Uk Seunim (원욱스님) continue teaching his master's art by the name Seon-Gwan-Moo (or Sunkwanmoo), and a couple of other prominent monks (such as Jeok-Un Seunim) teach other forms of the original art, as well. Kim Ji-Woong (김지웅) is the head of the Sun-Kwan-Moo Headquarters in Seoul, and Kim Yeon-Sam (김연삼) is the head of the Seong-Nam branch in South Korea,outside Korea the only club currently operating is situated in Israel.
Basic training categories
Yu-Yong-Gong (유연공; 柔軟功) - unique warm-up exercises that employ stimulation of certain pressure points to enhance health.
Oh-Chei-Yu-Pop (오체유법; 五體柔法) - stretching exercise for the flexibility of the entire body, that is suited for martial artists.
Ki-Gong (기공; 氣功)– special exercise which aims to promote a better flow of energy in the 8 extraordinary vessels major Chi reservoirs according to Chinese medicine) and corrects spinal misalignments.
Haeng-Kwan (행관; 行觀) – slow and dynamic power movement forms.
Bo-Pop (보법; 步法)– the art of foot work and maneuvering.
Su-Pop (수법; 手法)– includes all hand block and attack techniques.
Kak-Pop (각법; 脚法)– includes all foot and leg blocks, kicks, jumps, and sweep-downs.
Nak-Pop (낙법; 落法) – the art of falling and rolling.
Sang-Gong (상공; 相攻)– mutual blocks and attacks
Jwa-Kwan (좌관; 坐觀)– sitting meditation
Tol-Palki (돌밟기)– practicing the spirit of 'no-mind' while jumping between rocks in the mountains (which is a part of meditative outdoor training while trekking and mountain hiking)