  In the holographic framework, we argue that the partial entanglement entropy
(PEE) can be explicitly interpreted as the component flow flux in a locking bit
thread configuration. By applying the locking theorem of bit threads, and
constructing a concrete locking scheme, we obtain a set of uniquely determined
component flow fluxes from this viewpoint, and successfully derive the PEE
proposal and its generalized version in the multipartite cases. Moreover, from
this perspective of bit threads, we also present a coherent explanation for the
coincidence between the BPE (balanced partial entanglement)/EWCS (entanglement
wedge cross section) duality proposed recently and the EoP (entanglement of
purification)/EWCS duality. We also discuss the issues implied by this
coincident between the idea of the PEE and the picture of locking thread
configuration.
