 However, the story behind that was the envy of Li Jiancheng and Li Yuanji towards Li Shimin.Luo Cheng was actually a victim of political conflicts among Li Yuan’s sons.There are much more folk stories about Luo Cheng outside of Shuo Tang, including his romantic love with Dou Jiande’s daughter Xianniang (窦线娘), and even with Hua Mulan (花木兰).