疾风知劲草，烈火见真金
jí​fēng​zhī​jìn​cǎo​liè​huǒ​jiàn​zhēn​jīn

sturdy grass withstands high winds and true gold stands the test of fire

疾风知劲草，烈火见真金 疾風知勁草，烈火見真金 jí​fēng​zhī​jìn​cǎo​liè​huǒ​jiàn​zhēn​jīn
sturdy grass withstands high winds and true gold stands the test of fire
sturdy grass withstands high winds and true gold stands the test of fire; used to describe how a person's true character and integrity are only proven during difficult times or when facing major challenges