All classes of people in the North ; ; "All classes of people in the North" is a phrase referring to the richness and diversity of the people in the northern region of Vietnam (Northern Vietnam), a historical place name given by King Minh Mang to refer to the area from Ninh Binh northward, encompassing many different social classes, personalities, and customs, sometimes expressed humorously or ironically (such as "profound" or "beat around the bush" personalities) in certain social contexts.