講一套做一套 (gong2 jat1 tou3 zou6 jat1 tou3) — to talk in one way and act in another; to say one thing and does another; to not practice what one preaches; to go back on one's words in Cantonese
gongˊ²講jatˉ¹一tou˗₃套zouˍ₆做jatˉ¹一tou˗₃套简 讲一套做一套
Mandarin Pinyin: jiang3 yi1 tao4 zuo4 yi1 tao4
Meaning of 講一套做一套
nounto talk in one way and act in another; to say one thing and does another; to not practice what one preaches; to go back on one's words