  The mass spectrum and the two-body open-charm decays of the $J^{PC}=1^{--}$
charmonium states are studied with the coupled-channel effects taken into
account. The coupled-channel-induced mixing effects among the excited vector
charmonia are studied. Based on our calculations of the masses and the decay
widths, we find that the tension between the observed properties of
$Y(4260)/Y(4360)$ and their conventional charmonia interpretations could be
softened.
