一字之师 yī zì zhī shī

DEFINITIONS

  1. one who can correct a misread or misspelt character and thus be your master

CHARACTERS

一 yī
HSK 1
one; a, an; alone
字 zì
HSK 1
letter, character, word
之 zhī
HSK 4
marks preceding phrase as modifier of following phrase; it, him her, them; go to
师 shī
HSK 1
teacher, master, specialist