表裡一致 [－里－－]

Jyutping biu2 leoi5 jat1 zi3
Pinyin biǎo lǐ yī zhì

Definitions (Wiktionary)
  1. phrase, idiomatic
    the same on both the inside and out; honest and sincere; to mean what one says
    (syn.) 表里如一, 表裏如一, 表裡如一