In Korea, 3rd – 20th century, a unit of mass.
In the 20th century = 37.5 grams.1 
Some magnitudes in previous centuries:
| Period, centuries CE |
Magnitude in grams |
| 3rd | 13.92 |
| 6th-7th | 41.76 |
| 7th-10th | 37.3 |
| 10th-14th | 37.3 |
1. United Nations, 1966.
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Last revised: 21 January 2009.