The opening line of the first of
杜牧's
过华清宫绝句三首 'Three Quatrains on Passing Huaqing Palace'. The brocade is the East and West Embroidery Ridges of Mount Li, where the emperor Xuanzong kept his hot-spring palace. The poem goes on to
一骑红尘妃子笑，
无人知是荔枝来, a jab at the lychees rushed by courier for
杨贵妃.
