(八)尾闾中正 Keeping the Coccygeal Vertebrae Straight
尾闾中正是关系身躯、动作姿势“中正安舒”、“支撑八面”的准星。太极拳运动时极重视尾闾中正,不论是直的或是斜的动作姿势,都必须保持尾闾与脊椎成直线,处于中正状态。更重要的是,尾闾中正还影响着下盘的稳固。所以尾闾中正同样是和以上七点联贯统一的。能够统一地做到这八点,就可以使躯干、上肢、下肢的内在劲力达到完整如一的地步。
It keeps the posture of body straight,relax and supporting.Taiji Quan emphasizes on it.The coccygeal vertebrae shall always be straight in any movement posture.Moreover,keeping coccygeal vertebrae straight affects stableness of the lower limbs.If one can fulfill the above-mentioned seven instructions integrally with this one,the force of body,upper limbs,lower limbs will be perfectly integrated.