一曲阳关

Explanation: Yang Guan old tunes were the ancients in the time to bid farewell to sing. Metaphor leave. 　　Source: Su Song, "Zhang Yuan Yu Jia Ao Tang Mothering Qinzhou to send" How many words a Quyang of Emotion, Zhijun want to go to the Qin Chuan. "Song Liuyong" Youth Tour "word a Quyang off, heartbroken voice to do, alone with blue radius."