初生之犊不怕虎

chū shēng zhī dú bù pà hǔ

see 初生之犢不畏虎|初生之犊不畏虎[chu1 sheng1 zhi1 du2 bu4 wei4 hu3]

chū

at first

shēng

to be born

zhī

(possessive particle, literary equivalent of 的[de5])

calf

no; not so

to be afraid

tiger