《史记·八书·河渠书》
这些粮食沿渭水运入长安，与直接从关中收获的没有两样，而不再从砥柱以东漕粮入关。 
谷从渭上，与关中无异，而砥柱之东可无复漕。 
These grains are shipped along the Wei River to Chang'an, no different from those harvested directly from Guanzhong; it will no longer be necessary to transport grain from east of Dizhu to the west of the pass.