日日想你如何忘怀夜夜念你无法安睡
[rì rì xiăng nĭ rú hé wàng huái yè yè niàn nĭ wú fă ān shuì]
'Thinking of You Every Day and Night', meaning every single day one can't help but think about the person they love, leading to inability to sleep at night due to continuous memories and thoughts of this special person.