  In this paper, we discuss tensor network descriptions of AdS/CFT from two
different viewpoints. First, we start with an Euclidean path-integral
computation of ground state wave functions with a UV cut off. We consider its
efficient optimization by making its UV cut off position dependent and define a
quantum state at each length scale. We conjecture that this path-integral
corresponds to a time slice of AdS. Next, we derive a flow of quantum states by
rewriting the action of Killing vectors of AdS3 in terms of the dual 2d CFT.
Both approaches support a correspondence between the hyperbolic time slice H2
in AdS3 and a version of continuous MERA (cMERA). We also give a heuristic
argument why we can expect a sub-AdS scale bulk locality for holographic CFTs.
