就让你的名在我口中生了锈
[jiù ràng nĭ de míng zài wŏ kŏu zhōng shēng le xiù]
Loosely translated to 'Let your name rust in my mouth.' It’s a metaphorical phrase implying that mentioning someone’s name has become very rare or ceased altogether. This gives off an air of forgotten or distant nostalgia.