“…With regard to other extensions and analogies of (1.2)–(1.4), we can refer to [1,2,8,10,12,14,23–25,27,29,31,36]. In addition, by the continuous innovation of kernel function, introducing parameters, studying the high-dimensional extension, coefficient refinement and the equivalent conditions of the best constant factor, and also considering the discrete and the half-discrete forms, a large number of new Hilbert-type inequalities have been established in recent years (see [4–6,9,11,15,19,20,30,32,34,35,38,39]). It should be pointed that the establishment of these new inequalities fully demonstrates the methods and techniques of analysis and proves to be of vital importance to the development of modern analysis.…”