At this time the confederation of cultured princes called China- or, to use their own term, the Central Kingdom-was a very different region from the huge mass of territory familiar to us under those names at the present day. It is hardly an exaggeration to say that civilized China, even at that comparatively advanced period, consisted of little more than the modern province of Ho Nan. All outside this flat and comparatively riverless region inhabited by the "orthodox" was more or less barbaric, and such civilization as it possessed was entirely the work of Chinese colonists, adventurers, or grantees of fiefs in partibus infidelium (so to speak). Into matters of still earlier ancient history we may enter more deeply in another chapter, but for the present we simply take China as it was when definite chronology begins.