《汉书·志·地理志上》
《尚书》上说：大禹把土地进行划分，顺着山势砍削树木作为路标，奠定了高山大河的基础。
曰：禹敷土，随山刊木，奠高山大川。
The Shang Shu said: Dayu divided the land, felled trees along the mountain势 as road signs, and laid the foundation for high mountains and rivers.