The Hubble tension remains a core unsolved puzzle in modern cosmology. Within the canonicalCDM framework, extrapolation from Planck CMB data yields the early-Universe Hubble constant , while direct local measurements anchored on the SH0ES distance ladder (Cepheids + Type Ia supernovae) deliver. The persistent offset has reached a statistical significance of following high-precision JWST observations, and prevailing scenarios including modified dark energy, exotic early-universe particles and local cosmic underdense void all fail to satisfy full observational constraints. In this work, we adopt the unified Real-Virtual Dual-Field Theory (RVDT), sharing identical exponential field-decay formalism with our prior publications (RVDT-01 for ‘Oumuamua’s non-gravitational acceleration, RVDT-02 for orbital residuals of comet C/2026 C1). Cosmic spacetime consists of two coupled components: the Real Field (all standardCDM ingredients: baryonic matter, cold dark matter and cosmological constant) and the pervasive Virtual Field following. At high redshift (, CMB decoupling epoch), ultra-high cosmic matter density strongly suppresses Virtual Field gradients such that its contribution vanishes entirely, leaving pure Real Field evolution consistent with . In the low-redshift nearby Universe (around the Milky Way), reduced matter density unlocks the Virtual Field’s gradient-induced effective cosmic repulsion, adding an extra expansion term to reproduce the locally measured .The unified RVDT framework connects Solar System small-scale celestial dynamics and large-scale cosmic expansion, with falsifiable observational predictions testable by upcoming DESI, LIGO gravitational-wave distance calibration and JWST deep-field surveys.