Reference:
Book of Old Tang Dynasty: Luo Yi, whose real name is Yan Zi, is from Xiangyang and lives in Yunyang, Jingzhao. Father Rong, general of Sui Dynasty. Artistic, stubborn and ruthless, brave in attacking and shooting. Great cause, repeatedly with the military, officer to warrior lang will. Yang-ti ordered Li Jing, the right general of Wuwei, to supervise the army in Peiping.
The owners of Beiping House are Luo Cheng and his father Luo Yi. Luo Yi was a general in the Sui Dynasty. Se is fierce and cunning, headstrong and stubborn, and doesn't care about benevolence and righteousness. But he is brave in attacking and shooting. In the middle of the great cause (about 6 10), he became a warrior and general because of his repeated military achievements. In the eighth year of the Great Cause of Sui Dynasty (6 12), Yang Di sent troops to attack Korea, and ordered Governor Se to rule Xinchang (now Lulong, Hebei Province) in Beiping County, where he was rescued by Li Jing, the right general of Wuwei. Luo Yi was proficient in military affairs when he was a teenager, and his troops were disciplined. However, he let his anger fly and bullied Li Jing many times, but he was often humiliated by Li Jing, so Se resented Li Jing deeply, and later framed Li Jing for rebellion, but without success.