  In this paper, we establish connections between reflected entropies of
multipartite mixed states in CFT$_{2}$ and hyperbolic string vertices of closed
string field theory (CSFT). We show that the reflected surfaces, which are bulk
duals of the reflected entropies, share the same Riemann surfaces with the
hyperbolic string vertices. This observation enables us to build quantitative
relations between the reflected entropies and hyperbolic string vertices. We
illustrate the connections with several examples. Consequently, we propose that
spacetime structure could be directly generated from the hyperbolic string
vertices. The advantage of the hyperbolic string vertices approach is that we
have a dynamical equation, the Batalin-Vilkoviski master equation, to control
the generating process.
