步,作為古代長度單位,已是定論。其製歷代不一。一些著作對“步”也做了較詳盡的描述,如向熹先生認為:“度量衡量词是随着周秦度量衡制度的订立而产生的。其中表示长度单位的有‘寸、尺、丈、步、武、墨、舍等。六尺為步……?庇郑?”表示面积的單位有‘亩、成、圻、同、雉’等艽詸M一步,直一百步爲‘畝’;商秧变法,以横一步,直二百四十步为 Step, as an ancient unit of length, is a verdict. Its system varies from one generation to another. Some books also made a more detailed description of “step”, for example, to Mr. Xi: “Measure words are produced with the establishment of the Weights and Measures of Zhou dynasty, in which the length, Zhang, step, Wu, Mexico, homes, etc. Six feet for the steps ......?  庇 Zheng? ”Said the area of ​​the unit ’mu, into, 圻, with the pheasant’ and so on  艽  詸 M step, Hundred steps for the ’mu’; Business Transplantation method to a horizontal step, two hundred and forty straight