  We propose a charge crystal model that captures all the essential physics of
the high temperature superconductivity (HTS) in the long wavelength limit.
Based on the recent transport and the far-infrared (far-IR) experiments, we
argue that the three-dimensional (3D) ordering of the pinned two-dimensional
(2D) square electronic lattice (EL) in each CuO2 plane is the building block of
HTS. Incorporating the physical picture derived from the neutron scattering
experiments, we demonstrate that our model presents a coherent picture of the
HTS. We suggest that the charge crystal model serves as a model for the
microscopic theory and, hence, offers the key to the mechanism for the HTS.
