How long was the ancient Yili Road?

In ancient times, one mile was equal to 300 steps. In the fifteenth year of the Spring and Autumn Period (the first 594 years) and Biography of Gu Liang, it was declared: "The ancients walked three hundred steps, and the famous scenery was sweet. There are 900 mu of mine fields and one public field. "

Compared with the surface data, the actual values of weights and measures in past dynasties have changed to varying degrees. Qin and Han dynasties took six feet as steps, and one foot was about 23 cm long. Sui and Tang dynasties took five feet as steps, and one foot was about 30 centimeters long. In contrast, the human stride has hardly changed. One step (one left and one right) is basically 1.4~ 1.5 meters.

Extended data:

Since the reform of weights and measures was carried out from 65438 to 0929 in the Republic of China, one mile specifically refers to one city, which used to be called one mile. Often used to measure distance and geographical distance. For example, milestones (signs set on the roadside for calculating mileage). As a unit of measurement, "Li" originated from China's ancient Jingtian system. After the abolition of the well field system, it evolved from an area unit to a length unit.

References:

Baidu encyclopedia-Yili