At the end of the eleventh year of Chongzhen in the Ming Dynasty, Qing soldiers broke through the side walls and plundered Jingji Shandong; Li Zicheng was defeated and hid in the mountains; Zhang Xianzhong surrendered and hid in Huguang. , in Henan, he began his legendary life of saving the common people in troubled times. Daming, Daqing, Dashun, Daxi, in this era of turbulent chaos and brilliance, let’s see how Li Yan, through arduous efforts, established a powerful of the Chinese Empire.