A short review of the vector charmonium-like state ψ(4230)

We present a concise review of the vector charmonium state ψ(4230), which was originally labelled as Y (4260) in the literature. As one of the earliest candidates for a QCD exotic states, its interpretation has initiated various ideas about possible manifestations of non-perturbative mechanisms in the charmonium mass regime. In this short article we briefly review the experimental status of ψ(4230) and discuss possible theoretical interpretations. We will focus on four broadly investigated scenarios, i.e. tetraquark, hybrid, hadro-quarkonium, and hadronic molecule, and highlight the key issues based on these approaches. Crucial experimental observables, e.g. mass position, lineshapes, di-lepton decay width Γ_ee, production rates in B meson decays, dominant hadronic decay patterns, and the potential 1^-+ and 0^-- exotic partners, are assessed, which can provide crucial structure information for understanding this mysterious state.