日日夜夜

Explanation: Night and day. Describe the continuation of a long time. 　　Source: Hong Shen, "Green Dragon" second act here, Xiu three days and nights in the car water, car fainted in the water car. " 　　Examples: Chongqing Hongyan in the ~, you heroic struggle, grace under pressure. ★ Guo Xiaochuan "mourning beloved Premier Zhou Enlai," Poetry Thesaurus:  The whole day Not stop, Zhengri overnight