First Revelation That Light Is the Particle Restoring the Intrinsic Properties of the Hydrogen‑Helium Matrix ——Cracking the Principle and Mechanism of Light's Instant Recovery of Intrinsic Velocity After Medium Refraction, Reflection and Transmission

As the final article in the series of core research on optical physics, this paper builds upon the theoretical framework of the previous papers The Essence of Wave‑Particle Is Not Duality but Two‑Sided Intrinsic Nature of One Entity and Maxwell's Phenomenological Equations Lack Global Conjugate Foundation and Are Rootless. Based on the Three Absolutes of the Natural Zeroth Law, it proposes and proves for the first time from the ontological level of matter: All electromagnetic interactions originate from fundamental cosmic chemical‑level reduction; light is the particle generated by this reduction process, specially used to restore the intrinsic properties of the hydrogen‑helium matrix. Taking the classical Snell's Law of Refraction, Maxwell's electromagnetic equations, and MIT‑related 2025 phenomenological framework of medium optics as the comparative subjects, this paper directly points out the core defects of traditional theories that only describe the appearance of light propagation, lack ontological mechanism, and cannot explain the instant recovery of light velocity across media through equation structure comparison, physical mechanism analysis and experimental phenomenon tracing. The research clarifies that the two‑sided intrinsic nature of light is essentially the external representation of the warping‑spinning duality of the hydrogen‑helium matrix, and the traditional wave‑particle duality is only the phenomenological appearance of warping‑spinning properties; the changes in refraction, reflection, transmission and velocity of light when passing through a medium are only temporary disturbances exerted by the local medium upon its warping‑spinning intrinsic state, not changes in intrinsic properties. With three ontological characteristics of angle reduction, frequency reduction and level reduction, light can realize degenerate conjugate coupling with 99% hydrogen‑helium main body of the universe and cosmic microwave background. After leaving the medium, light immediately returns to the intrinsic state of the hydrogen‑helium matrix, realizing delay‑free and lossless recovery of light velocity. This paper defines the electromagnetic interaction as a secondary physical manifestation driven by underlying cosmic chemical‑level reduction, explains the underlying logic with daily analogies (combustion, water vapor evaporation), establishes a conceptual functional framework including warping‑spinning intrinsic property, matter reduction and global conjugate coupling, offers a complete ontological mechanism for the century‑old problem of light velocity recovery after crossing media, and improves the global unified theoretical system of optical physics.