bù​rù​hǔ​xué​yān​dé​hǔ​zǐ

nothing ventured, nothing gained

不入虎穴,焉得虎子 bù​rù​hǔ​xué​yān​dé​hǔ​zǐ
nothing ventured, nothing gained
How do you catch the tiger cub without entering the tiger's lair? This idiom means that one cannot achieve great success or victory without being willing to take risks and face danger.