“…With higher statistics achieved by BESIII, they are observed via more processes and measured with improved precision. The ψ(4230) is observed in the e + e − → π + π − J/ψ [10,11], e + e − → π 0 π 0 J/ψ [12], e + e − → K 0 S K 0 S J/ψ [13], e + e − → K + K − J/ψ [14], e + e − → π + π − ψ(3686) [15,16], e + e − → π + π − h c [17], e + e − → ωχ c0 [18,19], and e + e − → π + D 0 D * − [20] processes, and the ψ(4360) is observed in the e + e − → π + π − ψ(3686) [15,16], e + e − → π + π − h c [17], and e + e − → π + π − ψ 2 (3823) [21] processes. The parameters of each of these two resonances, such as their masses and widths, are similar, but there are still differences between these decay modes.…”