The fen (Chinese: 分; pinyin: fēn) in Mandarin, fan in Cantonese or hun in Taiwanese, is a traditional Chinese unit of length.
One fen equals 1/10 of a cun or 1/100 of a chi.
[1] [2] These correspond to the measures listed simply as "China" in The Measures, Weights, & Moneys of All Nations [6] Length measure in Taiwan is largely metric but some units derived from traditional Japanese units of measurement remain in use as a legacy of Japanese rule.
[7] Taiwanese length units and the translation of length units in metric system (SI) shares the same character.
The adjective Taiwanese (台) can be added to address the Taiwanese unis system.