Since I don't know exactly what the'ming 4 great novels' are, it's difficult to give a proper brief introduction. However, if it's a variation of the common Four Great Classical Novels, they are all full of rich cultural and literary values. For instance, 'Water Margin' shows the loyalty and rebellion of different characters.
As the'ming 4 great novels' is an unknown term to me. But if we consider the regular Four Great Classical Novels as a reference. 'Dream of the Red Chamber' is famous for its complex characters and family relationships. 'Romance of the Three Kingdoms' is renowned for its strategic and political stories. Without knowing more about'ming', this is the best I can do.