镌骨铭心 Origin — Chinese Character Wiki

juāngǔmíngxīn

to be etched in one's bones and heart

镌鐫 juān

to remember deeply

(literary) To engrave on one's heart; to remember forever
骨 gǔ noun

bone

bone; the hard tissue that forms the skeleton of humans and vertebrate animals
铭心銘心 míngxīn

to imprint on one's mind

to engrave in one's heart; to remember forever with gratitude or deep feeling