At the turn of summer and autumn in the second year of Xiantian, although the emperor had ascended the throne, the eldest princess was more powerful, and the situation in Chang'an was uncertain. Lu Lingfeng and Su Wuming were ordered to lead a detective team composed of Pei Xijun, Fei Jishi, Yingying and Xue Huan to return to Chang'an in the name of escorting the golden peach presented by Kang Guo. In the prosperous Chang'an, Lu Lingfeng was reinstated to Yongzhou Judicial Service and joined the army. Su Wuming was awarded a special official position. At the same time, Fei Jishi was appointed as the shopkeeper of Sushan Store, and the store was set up as a spy intelligence center for the whole of Chang'an. The two Lu Su launched a new policy, started a city-wide investigation mode, went deep into various districts of Chang'an, and came into contact with a wider range of people and people's livelihood. They also used this to avoid the fight between the emperor and the eldest princess. After experiencing many mysterious cases such as the golden peach in Kangguo, the cry of Chengfo Temple, the traces of Bai Ze, the tail-eating snake, and the Jieyou Shop, the situation in Chang'an finally converged on the prosperous polo case involving the court. Lu Lingfeng and Su Wuming had to face this autumn of swords and swords and their respective fates, and paid a heavy price for it. Even after going through ups and downs, they finally watched the prosperous Tang Dynasty in Chang'an for thousands of years, and their original intention of protecting the people has never changed.
