Technique Characteristics of Back-through Quan
通背拳是通过模仿猿的舒肢展臂、鹰的振翅翱翔、猫的扑鼠之灵等动作特点来造拳取势的，故形成其冷弹柔进、放长击远等技法特点。
Back-through Quan is practiced and formed by imitating the movements of ape's extending arms, eagle's soaring wings and cat's agile way of catching rats, coming into being technique characteristics of sudden deflect，soft on-going and a long distance strike.
（一）前空后丰，拧腰合胯 Empty front engorged back with rotating waist and tightening hip
前空后丰、拧腰合胯是通背拳对形体姿态的基本要求，意在蓄而后发。前空也称含胸或虚胸，要求胸廓略向内含蓄、收腹，形成空畅的形态。后丰也称拔背或探背，要求背部肌肉向下松沉、立腰、敛臀，使背部呈圆而丰满的形态。拧腰是指以腰为轴的左右旋转。合胯合膝是取其进退之迅速，脚趾抓地是取其生根之意。拧腰切胯才能做到力从足跟起，劲从腰背发，以力通于背，顺于肩，达于指。
Empty front engorged back with rotating waist and tightening hip is a basic requirement for body posture while practicing Back-through Quan, with a prospect for saving up strength to start out.Empty front is also called sunken chest or empty chest, it is required that bosom shrunk inward and belly buttocks tight, forming an empty posture.Solid back is also known as straightening back. The back muscles must be relaxed and kept downward, waist straightened and hip tightened, making sure that your back is full and round.Rotating waist is to turn left or right by pivoting your waist.Tightening hip and knees is meant to move forward and backward swiftly, and toes griping ground means to take root.After rotating waist and tightening hips, the strength can be generated from heel; power generated from waist and back, so the strength and power can go through back and shoulder reaches to fingers.