推ㄊㄨㄟ心ㄒㄧㄣ置ㄓˋ腹ㄈㄨˋtuīxīn‑zhìfù

將自己赤忱之心，放置於他人腹中。比喻信任對方，坦誠相見，毫無保留。例「我對朋友一向推心置腹，真誠對待」。

英to give one's bare heart into sb else's keeping (idiom); sb has one's absolute confidence, to trust completely, to confide in sb with entire sincerity