Is there any historical basis for the content of Yao's novel Li Zicheng?

Li Zicheng is basically a historical novel written by Yao based on historical facts. Adding literary language to the environment and characterization can meet the needs of novel creation and arouse readers' interest. Li Zicheng, the first and second novels, is the most successful, which constantly reflects the earnest and rigorous style of study of the older generation of writers in the aspects of plot coherence, characterization of novel characters and description of environment, and is a classic of China's historical novels.