Based on the framework of the 1.944 mm macroscopic equivalent virtual lattice of Real-Virtual Dual-Field Theory (RVDT), this paper takes the axiom that particle mass equals the topological locking strength of vortex knots to the lattice as the core principle. We conduct a complete first-principles derivation of the geometric scale, three-generation mass eigenstates, flavor eigenstates and neutrino mass ordering. This study clarifies that neutrinos are natural intermediate states between virtual field medium states and real field condensed states, and their essence is weak topological vortex knots composed of Planck-scale primitive microelements inside macroscopic lattices. The effective characteristic diameter of neutrino vortex knots is derived to be approximately , which is entirely contained within a single 1.944 mm macroscopic lattice. Combined with the mass squared differences measured by global neutrino oscillation experiments and the total mass constraints from cosmological observations, we calculate the absolute masses of three neutrinos under both normal ordering and inverted ordering schemes respectively. From the perspective of lattice topological evolution, the theoretical rationality of normal mass ordering is demonstrated. Furthermore, we explain the physical mechanism of flavor mixing and neutrino oscillation based on the interference of discrete lattice vibrations, and put forward testable predictions for next-generation neutrino experiments. This work provides a new theoretical approach to the origin of neutrino mass within the discrete spacetime framework.
zhongqiang Liu (Sun,) studied this question.