番 On the HSK 6 vocabulary list, at CEFR level C2. fān ㄈㄢ foreign (non-Chinese) barbarian bound form classifier for processes or actions that take time and effort a kind a sort classifier (used after the verb 翻[fan1] to indicate how many times a quantity doubles, as in 翻一番[fan1 yi1 fan1] "to double") classifier Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0 国际中文教育中文水平等级标准, 中华人民共和国教育部, MIT