Aspects of this topic are discussed in the following places at Britannica.
...weight, the shi, or dan, was fixed at about 60 kg (132 pounds); the two basic measurements, the zhi and the zhang, were set at about 25 cm (9.8 inches) and 3 metres (9.8 feet), respectively. A noteworthy characteristic of the Chinese system, and...
Chinese unit of land measurement that varies with location but is commonly 806.65 square yards (0.165 acre, or 666.5 square metres). Based on the chi, a unit of length after 1860 measuring 14.1 inches, the mou has been defined by customs treaty as 920.417 square yards. In ancient China, where units of measure...
an old Chinese measure of length equal to 10 chi, or 3.58 metres (11 feet 9 inches). The value was agreed upon by China in treaties (1842–44 and 1858–60) with England and France. It was thereafter used by Chinese maritime customs as the standard value for assessing all tariff duties. The length of one chi...
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