我吃太多盐了闲得总是想你
[wŏ chī tài duō yán le xián dé zŏng shì xiăng nĭ]
Translated as 'I have eaten too much salt and have nothing better to do but think of you all the time', this idiom implies longing for someone when there is little else to occupy oneself. In essence, 'missing someone very much'.