Series Series · 1 piece Exam lists, humanely 1 HSK 1 in stories — 150 characters grouped so they remember each other HSK 1 is 150 characters. Learned as an alphabetical list it is a chore; learned in story families it is five small worlds. Here is the grouping, and the free practice sheets to write each one. September 3, 2026 The characters in this series 一 yī one 二 èr two 三 sān three 四 sì four 十 shí ten 口 kǒu mouth 中 zhōng middle 大 dà big 天 tiān sky 学 xué to study