  Motivated by the large branching fractions of $J/\psi \to f_0 (1710)
\omega/f_0(1710) \phi$ and the light exotic candidates, we find that there may
exist molecular states composed of $f_0(1710) \omega$ and $f_0 (1710) \phi$,
which correspond to $X(2440)$ and $X(2680)$ observed in a few decades before.
The branching fraction of $X(2440)$ and $X(2680)$ to various $PV$ channels and
$KK\omega(\phi)$ channels are estimated in the molecular scenario. In addition,
the large branching fractions of $J/\psi \to f_0 (1710) \omega/f_0(1710) \phi$
indicate the sizable molecular components in the $J/\psi$ state. Thus, we
consider the $J/\psi$ as the supperposition of $c\bar{c}(1S)$, $f_0(1710)
\omega$ and $f_0 (1710) \phi$ molecular states, and these molecular components
have significant impact on the light hadron decays of $J/\psi$, which may
shield light on the long standing $\rho-\pi$ puzzle.
