In China, 3rd century bce – 21st century, a unit of length = 10 chi. An earlier romanization was chang.
In the 20th century, = 3¹/₃ meter.
fāngzhàng 方 丈 a square zhàng, = 100 square chi = ¹¹¹⁄₉ square meters.
United Nations, 1966.
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Last revised: 8 August 2005.