Sentimental. "Shui Mo Lan Ting" is originally a very sad piece of music. Its background story tells the tragic story of a woman who was waiting for her husband to return but did not. The sound of the erhu evolved from a light colorless to a wordless cry because it contained too many elements. The cruel helplessness made the erhu tunes flow into people's hearts, infecting the melancholy emotion to the audience.