Things that go bump in the night: From J/Ψφ to other mass spectrum

This article summarizes a brief development of exotic mesons with vector-vector (VV) final states starting from the J/Psi phi mass spectrum, as well as extensions to other final states for strong-interaction physics and physics beyond standard model. These VV final states are very suitable to be studied at the CEPC through associate production and two-photon production, as well as a visionary low energy photon collider.