Tae-Geuk-Guan'(太極拳) Tae-Geuk(太極) is arranged Yum-Yang-O-Hang(陰陽五行) and created from Mu-geuk(無極). Mu-geuk(無極) means great chaos. Jin-sik Tae-Geuk-Guan(陳式太極拳) has tenth essential theory. There are Li(理), Qi(氣), Samjul(三節), Sacho(四稍), Ojang(五臟), Samhap(三合), Yukjin(六進), Sinbup(身法), Bobup(步法), Gangyou(剛柔). Li(理) is Rules of all things. Qi(氣) is body. Body is divided into Samjul(三節), Sacho(四稍). Ojang(五臟) is inside body and make human'body and Qi(氣). Samhap(三合) is union of mind & intention, Qi & power, muscle & bone. Yukjin(六進) is movement of body. Sinbup(身法) has Chong(縱), Hoeng(橫), Ko(高), Jeo(低), Jin(進), Toe(退), Ban(反), Chuk(側). Bobup(步法) has Jin(進), Toe(退), Ban(反), Chuk(側). Yang-sik Tae-Geuk-Guan(揚式太極拳) has tenth essential theo. There are Songyo, Heolungjungkyung(虛靈頂勁), Hamhungbalbae(含胸拔背), Chimgyunsuju, Bunheosil(分虛實), Yongeuibulyonglyuk(用意不用力), Sanghasangsu(上下相隨), Naeoeisanghap(內外相合), Sangyunbudan(相連不斷), Dongchungguchung(動中求靜).