  This paper summarizes what we have done so far to explain charged
charmonium/bottomonium-like structures using a hadronic triangle diagram which
we call the initial single chiral particle emission mechanism. We discuss
processes like $A\to A'+P+P'$ in which two chiral particles $P$ and $P'$ are
emitted from $A$. In the intermediate we consider a hadronic one-loop diagram
in which $D^{(*)}/D_s^{(*)}/B^{(*)}/B_s^{(*)}$ are included to explain some
enhancements experimentally observed. Using this mechanism we explain some of
the exotic enhancements and predict a couple of enhancement structures.
