  In this paper, we studied the relationship between celestial holography and
chiral strings. Chiral strings differ from the usual string theory by a change
of boundary conditions on the string propagators. It is shown that chiral
strings would reproduce graviton amplitudes and could serve as an alternative
description of Einstein's gravity. Celestial holography is a proposed duality
between gravity in asymptotically flat space-time and a CFT living on its
conformal boundary. Since both are CFT descriptions of gravity, we investigate
the potential connection between these two formalisms. In this paper, we find
that both the energetic as well as conformal soft theorems could be derived
from the OPEs of vertex operators of chiral strings. All operators in the CCFT
can be described by Mellin transforming the vertex operators in the chiral
string theories, and the OPE coefficients of CCFT can also be obtained from the
world-sheet description.
