字如其人

zìrúqírén

one's handwriting reflects one's personality

Wiktionary

Entry Composition

1 字 zì
  1. letter
  2. symbol
  3. character
  4. word
  5. courtesy or style name traditionally given to males aged 20 in dynastic China

classifier: 個
2 如 rú
  1. as
  2. as if
  3. such as
3 其人 qírén that person; the person in question