画地饼

Traditional (Taiwan): 畫地餅

huàdìbǐng ㄏㄨㄚˋ ㄉㄧˋ ㄅㄧㄥˇ

    • to placate people with empty promises
    • pie in the sky

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

Literally
draw a cake on the ground
Meaning
To console or placate people with empty talk or fantasies, like the English 'pie in the sky'. Critical.

Sources