印刻在心底最身处铭记在脑海最深层
[yìn kè zài xīn dĭ zuì shēn chŭ míng jì zài năo hăi zuì shēn céng]
Means 'engraved at the deepest place in my heart and engraved in the depths of my mind'. It signifies deeply cherished or indelible memories or feelings that one holds dear forever.