Objective: To critique and reconstruct the theoretical foundation of "light as electromagnetic waves", proposing an alternative theoretical framework based on a real "ontology".

Method: Through logical analysis, it points out the conceptual confusion between "light has wave-like properties" and "light is an electromagnetic wave"; it reinterprets the LC oscillation circuit as a nuclear magnetic resonance process; it demonstrates that the wavelength measured by diffraction is the wavelength of the "momentum wave" rather than the wavelength of the electromagnetic transverse wave.

Conclusion: Light is a "light soliton" with rest mass [?] and its wavyness is intrinsic "momentum wave". Vacuum electromagnetic properties (εu2080, μu2080) are the ontological properties of the "Qi-state crystalline ether". The geometric view of gravity in general relativity is a mathematical fiction based on false presuppositions[?]. This work has provided a new ontological basis for unified understanding of the wave-particle duality.