- 真金不怕火炼 zhēnjīnbùpàhuǒliàn true gold fears no fireA person of integrity or a high-quality product can stand up to severe tests or any trial
- 真金不怕火来烧 zhēnjīnbùpàhuǒláishāo true gold fears no fire(idiom) a person of integrity can withstand any test; a true person is not afraid of being tested