Dou (Chinese: 斗; pinyin: dǒu), called to in Japan and du in Korea, is a unit of volume in East Asia.
It originated in China and later spread to Japan, Korean and other places.
One dou equals 10 sheng or 1/10 dan, is 10 liters in China,[1][2] 18.039 liters in Japan[3] and 18 liters in Korea.
[4] Dou is one of the traditional Chinese units of measurement used to measure cereal grains, among other things.
[5] For more details, please see Sheng (volume)