我姓郑却挣不到你爱我的心
[wŏ xìng zhèng què zhēng bù dào nĭ ài wŏ de xīn]
"My surname is Zheng but I cannot earn your heart of love towards me" is quite sad. It expresses self-identity (surname Zheng) while acknowledging personal failure in gaining love or recognition desired from a particular individual.