A relief map of the North China Plain and surrounding areas. Equirectangular projection, N/S stretching 122%. Geographic limits of the map: * N: 42.0° N * S: 28.0° N * W: 103.0° E * E: 123.0° E Section of Natural Earth Cross Blended Hypso with Shaded Relief, Water, and Drainages from naturalearthdata.com (public domain): Names of rivers and lakes. Archaelogical sites of the Erligang period/civilization.