把灯亮当鬼火 (把燈亮當鬼火) bǎ dēng liàng dāng guǐ huǒ

bǎ dēng liàng dāng guǐ huǒ set phrase to take light from a lantern as fire from a demon
Domain: Common Saying 俗语
Notes: A simile that describes not being able to tell true from false or to be able to judge good from bad (Suyu. p. 14)