你的拳头只能为我而硬你的眼泪只能为我而流
[nĭ de quán tóu zhĭ néng wéi wŏ ér yìng nĭ de yăn lèi zhĭ néng wéi wŏ ér liú]
Translated as 'Your fists can only be hard for me, your tears can only fall for me.' It expresses a possessive relationship where one demands all affection from another exclusively.