  The QCD hadronic string is supplemented with the reparameterization-invariant
boundary interaction to background chiral fields associated with pions in a way
compatible with the conformal symmetry. It allows the full reconstruction of
the P-even part of the Chiral Lagrangian in a good agreement with the
phenomenology of P-even meson interactions. The modification of boundary
interaction necessary to induce the parity-odd Chiral Dynamics (WZW action) is
outlined.
