Congratulations on Jinku Bai and Hong Cui's research paper entitled with "Selective Phosphoranation of Unactivated Alkynes with Phosphonium Cation To Achieve Isoquinoline Synthesis" been accepted by Organic Letters. This work represents the first example on the direct eletrophilic addition reaction of phosphonium cation to C-C unsaturated bonds, which we think is a novel and perfect complementary to the reaction pattern of phosphonium species.