你名字在我口中生了锈
[nĭ míng zì zài wŏ kŏu zhōng shēng le xiù]
Metaphorically meaning 'your name rusts on my mouth', it conveys a powerful sentiment where speaking someone’s name so often or thinking about them excessively has somehow lost its luster or become tarnished over time, reflecting either fatigue or sadness associated with repetition.