《六韬·犬韬·均兵》
在平坦地形上作战的方法是，五辆战车为一列，每列前后相距四十步，每辆左右间隔为十步，每队问的前后距离和左右间隔各六十步。
易战之法，五车为列，相去四十步，左右十步，队间六十步。
The method of fighting on flat terrain is that five chariots form a column, each column forty paces apart, each ten paces to the left and right, and the front and rear distances and left and right intervals of each team are sixty paces.