Xian was the Eastern end of silk route and very cosmopolitan during Tang Dynasty known as ( Changan) Keyi will be unable to host a very cultural and historical City like Xian without Bai who was from Tourist Bureau to explain all aspects of those relics shown esp the Qianling Mausoleum and the Sanzai figurines or the Steles. There were also Wuzetian and Princes Taiping tombs.