True mastery of Sōng is not a monolithic concept, but a multi-dimensional ascent guided by specific hierarchical principles. This section moves beyond the foundational dimensions (Sections 1–3) by introducing advanced, master-level roadmaps used to quantify and accelerate internal development. Each article below presents a distinct framework—philosophical, energetic, or mechanical—offering a unique lens through which to measure progress. By studying these complementary progressions, the practitioner gains a non-dogmatic, holistic understanding of the exact stages required to transform crude relaxation into the highest level of spontaneous, refined power.