苍蝇老虎

cāng ying lǎo hǔ

(coll.) jumping spider (which pounces on houseflies, hence the Chinese name)

苍

cāng

dark blue

蝇

ying

fly

老

lǎo

prefix used before the surname of a person or a numeral indicating the order of birth of the children in a family or to indicate affection or familiarity

虎

hǔ

tiger