lit. a new-born calf has no fear of the tiger (idiom)
fig. the fearlessness of youth
Definitions (Wiktionary)
proverb
A young person is often fearless and willing to take risks. (syn.) 初生之犢不懼虎, 青盲牛毋捌虎, 烏仔毋捌lastic, 牛囝唔捌虎, 牛仔毋捌虎, 初生之犢不怕虎, 初生之犢不畏虎, 牛囝毋捌虎, 烏囝唔捌lastic