子非他安知他之乐子非我安知我之痛
[zi fēi tā ān zhī tā zhī lè zi fēi wŏ ān zhī wŏ zhī tòng]
Inspired by Zhuangzi's philosophical dialogue, it translates to: 'You are not him, how can you know his happiness? You are not me, how can you know my pain?' It reflects a sense of loneliness and incomprehension, expressing that only the person experiencing emotions truly understands them fully.