《管子·地图》
盘旋的险路，覆车的大水，名山、大谷、大川、高原、丘陵之所在，枯草、林木、蒲苇茂密的地方，道里的远近，城郭的大小，名城、废邑、贫瘠之地及可耕之田等等，都必须完全了解。
滥车之水名山通谷经川陵陆丘阜之所在，苴草林木蒲苇之所茂道里之远近，城郭之大小，名邑废邑困殖之地必尽知之。
The location of winding dangerous roads, water where chariots can overturn, famous mountains, valleys, rivers, plateaus, and hills; the areas where vegetation, forests, and reeds grow densely; the distance of roads; the size of cities and towns; the location of famous cities, abandoned settlements, poor lands, and arable fields, etc., must be known in full detail.