Bewitched by the beauty and kindness of Xi Shi and Zheng Dan, Fuchai forgot all about his state affairs and at their instigation, killed his best advisor, the great general Wu Zixu. Fuchai even built Guanwa Palace (Palace of Beautiful Women) in an imperial park on the slope of Lingyan Hill, about 15 kilometres (9.3 mi) west of Suzhou. The strength of Wu dwindled, and in 473 BC Goujian launched his strike and completely routed the Wu army.