《史记·八书·河渠书》
天子认为说得对，命来自齐地的水利工匠徐伯表测地势，确定河道走向，动员全部兵卒数万人开凿漕渠，历时三年完工。
天子以为然，令齐人水工徐伯表，悉发卒数万人穿漕渠，三岁而通。
The emperor believed that this was correct, and had the water expert Xu Boxiao of Qi come and survey the terrain, determine the course of the waterway, and mobilize tens of thousands of troops to excavate the canal, and after three years they completed it.