精诚所加，金石为开 (精誠所加，金石為開) jīngchéng suǒ jiā, jīn shí wèi kāi

jīngchéng suǒ jiā, jīn shí wèi kāi phrase sincerity splits open metal and metal; if you put your heart to it, you can break up metal and rocks
Domain: Proverb 谚语
Notes: (CC-CEDICT '精誠所加，金石為開')