Explanation: Guan Yang Guan ancient name of the county in the southwest of Dunhuang, Gansu Province today; three sing a phrase repeated again and again. Originally referred to the ancient ◇ also be used to bid farewell to the tune of farewell. Source: Tang Wangwei "Weicheng song" Poetry Weicheng Zhaoyu damp dust cleared, guest houses green Green is the Willow. Advise you to do one more glass of wine, West of Yang Guan no reason people. "