乌有

烏有
wūyǒu
(literary) not to exist; nonexistent; illusory

CEDICT

literary

Entry Composition

1 乌 wū
  1. crow
  2. black
2 有 yǒu
  1. to have; there is
  2. (bound form) having; with; -ful; -ed; -al (as in 有意 yǒuyì intentional)