Karen and Cathy discuss the first 20 min of episode one of The Longest Day In Chang'An. They introduce the layout of the city and how "fangs" work as well as the curfew system during the Tang dynasty. They provide an overview of how time was announced then and then introduce the main characters of Zhang Xiao Jing and Li Bi. Zhang Xiao Jing is an inmate on death row selected by Li Bi to track down a member of the Wolf Squad who escaped capture that may be intent on causing harm in Chang An.