On 16 February 1929, the Nationalist government promulgated The Weights and Measures Act[7] to adopt the metric system as the official standard and to limit the newer Chinese units of measurement to private sales and trade in Article 11, effective on 1 January 1930.
[2] The Chinese units of measurement used in Hong Kong are similar to those used in Macau.
The standard commercial measure of real estate area is in square feet of the Imperial system.
[11] [4] In Taiwan, the principal unit for measuring the floor space of an office or apartment is 坪 (Taiwanese Hokkien: pêⁿ,[12] Hakka: phiàng, Mandarin: píng).
The principal unit of land measure is 甲 (Taiwanese Hokkien: kah, Hakka: kap, Mandarin: jiǎ).
[14] There are three area units whose Chinese names include character 畝: 市畝, 英畝 and 公畝.