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Chinese name
Korean name
Japanese name
Kana つぼ

A tsubo (or pronounced as [pyeong] in Korean, [píng] () in Chinese), is a unit of the size of rooms or buildings in Japan, Korea, and Taiwan equal to 36 shaku2 (shaku is Japanese foot and 1033m. in Korea, it is called as 자(ja)[1][2]) or 400121 square metres (3.3058 m2, 3.954 sq yd or 35.586 sq ft) and with the same symbolic word "". This unit is derived from Chinese Zhou Dynasty '歩' unit.

In Japan, tsubo is almost the area of 2 blocks of the standard Tatami (2 jō (ja:畳 (単位))) putting together into a square since the Edo Period (江戸時代).

In South Korea, a new law enacted as of July 1, 2007 will replace the use of pyeong in official documents with the square metre.[3] A studio apartment will generally be around 10 to 15 pyeong, a house somewhere around 50 or more, and the smallest of rooms, consisting of only a bed and a bit of floor space for students, will be as little as 1.5 pyeong.

In Taiwan, since Taiwan was once a colony under Japanese rule before today's Republic of China, ping (pyeong) is still commonly used despite the standard measurement of area has been changed to square metres in 1945.

See also[edit]