Yuan Dang Rounding the Crotch: Pelvic Arch Tensegrity, Adductor Elastic Recoil, and Lower-Limb Kinetic Rooting in Classical Neigong
At its essence, *Yuan Dang* is the deliberate biomechanical shaping of the pelvic basin and legs into a continuous, elastic vault. When a novice practitioner stands with knees bent, the legs typically collapse inward toward one another or flop outward into a dead sag. Rounding the crotch solves this by establishing a dynamic suspension bridge: the knees are gently rounded outward over the line of the toes, the inner thighs remain open and spacious as if hugging a broad wooden barrel, and the pelvic floor remains buoyantly lifted rather than compressed or overstretched.