“寥落古行宫,宫花寂寞红。白头宫女在,闲坐说玄宗。”元稹的《行宫》,常常激起先贤后人对唐玄宗李隆基一生风流的遐想。但迄今为止,很少有人知道唐玄宗有一个外国姬妾。在开元天宝时期“后宫佳丽三千人”中,有位来自中亚曹国的外国 Palace of lonely red woman in the White House, sit and say Xuanzong. Yuan Yuan’s “Palace”, often arouse the sages and descendants of the Tang Xuanzong Li Longji romantic life reverie. But so far, few people know that Emperor Xuanzong has a foreign concubine. In Kaiyuan Tianbao period “harem three thousand”, there is a foreign country from Central Asia Cao country