In the description, one 町 is mentioned to be a square shape with a side length of ~121m. This measurement is derived from the historical measurement of 40丈. One 丈 is equal to 10 尺. The 丈 is assumed to be 303cm here, but that would mean 1 尺 is 30.3cm long, which is a contemporary standardization, which cannot be applied to the heian period. Wikipedia's own article on the shaku history states, that the standardized length of 30.3cm was a decision made in the 19th century. Shaku in the heian period were likely significantly shorter, which would mean the chô were also noticeably smaller. This article from the Kyoto City Archeological Research Institute: https://www.kyoto-arc.or.jp/news/leaflet/063.pdf states that 1 shaku in the heian period was ca 29.8cm long, which would compound to a chô length of only 119.2 m. This seems very like a petty detail, but the article describes the ancient capital's layout in a way that seems stricter than reality was likely enforced at the time. ~2026-88246-7 (talk) 10:29, 9 February 2026 (UTC)
level-5 vital article is rated C-class on Wikipedia's content assessment scale.
