兔子尾巴长不了

tù zi wěi ba cháng bu liǎo

rabbits don't have long tails (idiom)

its days are numbered; won't last long

variant of 兔[tu4]

zi

noun suffix, as in 椅子[yi3 zi5] "chair"

wěi

tail

ba

the east of Sichuan and Chongqing Municipality

cháng

long

bu

no; not so

liǎo

(of eyes) bright