  We study the anisotropic properties of dynamical quantities: direct current
(DC) conductivity, butterfly velocity, and charge diffusion. The anisotropy
plays a crucial role in determining the phase structure of the two-lattice
system. Even a small deviation from isotropy can lead to distinct phase
structures, as well as the IR fixed points of our holographic systems. In
particular, for anisotropic cases, the most important property is that the IR
fixed point can be non-AdS$_2 \times \mathbb R^2$ even for metallic phases. As
that of a one-lattice system, the butterfly velocity and the charge diffusion
can also diagnose the quantum phase transition (QPT) in this two-dimensional
anisotropic latticed system.
