Character Identification
The characters are 從昨天 - From yesterday/since yesterday.  

By itself, it sounds and feels like something is missing. 

The song by popular Chinese band S.H.E. - 老婆 Wife, uses it in their lyrics, "從昨天 到今天 還有明天. 感謝老天 讓你們 陪在我身邊." (From yesterday, till today, and tomorrow, thank heavens for letting you stay by my side).