The PPC Law of Gravity (Pawan Upadhyay's Pressure–Curvature Law) presents a new theoretical framework explaining gravity as a pressure-driven curvature of spacetime. According to this model, mass generates pressure, and the force of that pressure produces spacetime curvature, forming the causal chain:Mass → Pressure → Force → Curvature → Motion → Pressure Waves.This theory extends Einstein’s field equations by emphasizing the role of pressure in the stress-energy tensor as the key factor shaping curvature. The study further introduces Pressure Waves as dynamic oscillations of the spacetime pressure field—representing the physical nature of gravitational waves. This independent research aims to unify gravitational behavior with the fundamental properties of pressure, offering a deeper insight into spacetime geometry and the origin of motion.