畫餅 [画饼]

Jyutping waa2 beng2
Pinyin huà bǐng

Definitions (Wiktionary)
  1. verb, figuratively
    to make (empty) promises; to give false hope
Examples (Tatoeba—Mandarin-English)
  1. Mandarin
    你这样就是画饼充饥！
    你这样就是畫餅充飢！
    nǐ zhè yàng jiù shì huà bǐng chōng jī ！
    • You're just comforting yourself with a fantasy!