  By defining $Q$ as a function which realizes the energy transference between
the bulk and the boundary of spacetime, as we interprete it here in the
framework of Ho\v{r}ava-Lifshitz (HL) cosmology, flat case, we discuss the
validity of the second law of thermodynamics in the light of the sign changes
of $Q$ (changes in the direction of energy transference) and its consequences
through the cosmic evolution, in particular, whether the thermal equilibrium
between bulk and boundary is reached or not. Additionally, we discuss possible
phase transitions experienced by the bulk and the boundary (seen as sign
changes in their heat capacities) through the cosmic evolution. The energy
density in the bulk is modeled under an holographic perspective. As far as we
know, currently there is not observational data on bulk-boundary interaction.
