  We study the hydrodynamic limits of the simple exclusion processes and the
zero range processes on crystal lattices. For a periodic realization of crystal
lattice, we derive the hydrodynamic limit for the exclusion processes and the
zero range processes, which depends on both the structure of crystal lattice
and the periodic realization. Even through the crystal lattices have
inhomogeneous local structure, for all periodic realizations, we apply the
entropy method to derive the hydrodynamic limits. Also, we discuss how the
limit equation depends on the choices of the realizations.
