Dust Theory Vol. 7: Endogenous Construction of Gradient Space-Time: Physical Spacetime Emergence and Natural Law Foundation (Gradient Cosmos Research Series)

The nature of spacetime and the necessity of natural laws stand as ultimate problems in physics and the philosophy of science. All existing physical theories treat spacetime as an a priori background stage and basic laws as given objective facts. They cannot explain the origin of spacetime itself or the ontological basis of natural laws, and the long-standing debate between substantivalism and relationism has never reached consensus. Based on the axiomatic system of Gradient-Relational Ontology, taking pure gradient relations as the sole primitive, this paper endogenously constructs three-dimensional spatial topology, the irreversible arrow of time, relativistic spacetime effects, and core features of quantum mechanics from three levels: conduction order, coupling topology, and steady-state condensation, without presupposing a spacetime background or physical laws. The study demonstrates that spacetime is not a background container carrying physical processes, but a macroscopic steady-state structure of conduction relations in gradient networks; natural laws are not a priori rules governing the world, but structural necessity formed by path condensation, whose stability is rooted in the statistical dynamics of free energy minimization. This paper further achieves the ontological unification of quantum and classical domains within the gradient framework, providing a relationalist dissolution scheme for the quantum measurement problem. As the concluding work of the Kaitian Project, this study completes the full-chain relationalist construction from physical spacetime to cognitive intelligence, providing a monistic relational ontological foundation for the entire physical world.