北城以北半夏殇
[bĕi chéng yĭ bĕi bàn xià shāng]
"North of the northern city half summer sadness" conveys a sorrowful sentiment occurring during midsummer within a certain location, which may be specific cultural/geographical context related. The term "half summer (半夏}" is used for both a seasonal reference and also refers to a traditional Chinese medicine, adding depth.