“…Especially the variational method and other topological methods have attracted considerable attention in the existence of the solution of the reaction-diffusion system. See [1,2,17,5,6,7,8,11,9,12,13,14,19,23,27,28,31,29,30,33]. However, to our best knowledge, there is few work on the existence of nonstationary solutions for systems such as (1).…”