All night and all day
It's a Chinese idiom. Pinyin is t ō ngxi ā och è zh ò u, which means all day and all night. From the snow in Guangling.
The origin of Idioms
The poem "snow in Guangling" written by Han Qi of Song Dynasty: "all night long and all day long, the buildings are piled up all over the valley."
Idiom usage
Used as an attributive or adverbial; used in writing.
All night and all day