In the fifteenth year of Hongwu (1382), Zhu Yuanzhang underwent institutional reform, and an unprecedented institution was created, which was the Jinyi Wei that made the officials of the imperial court change their faces. At the beginning of the establishment of Jinyiwei, "directly driving the guards, patrolling and arresting", mainly had the three functions of guarding the duty, reconnaissance and arrest, and canonizing the prison.
The Jinyi guards are strictly hierarchical, mainly divided into three classes, namely generals, lieutenants and lux, the general was originally called "Tianwu" Yongle when he was renamed "General of the Great Han", and selected people with majestic physique and courage to serve as palace guards. The lieutenant and the lux selected men who were healthy and had no previous criminal records to fill the post, and the lieutenant was in charge of the halogen book and the umbrella cover, and the lux held a golden drum and a flag.
During Chongzhen's reign, the country was already in the last stage, but the chancellor of the DPRK still sought his position in his position, Jinyiwei was directly subordinate to the emperor, had his own system of independence, the position of internal high-ranking official was hereditary, Luo Yangsheng was inherited from the hereditary position, he was very careful, always remembering his duties as Jinyiwei.
In the seventeenth year of Chongzhen (1644), Li Zicheng attacked Beijing, and Luo Yangsheng, as the commander of jinyiwei, was responsible for guarding the capital, and soon the city of Beijing was captured. After the Chongzhen Emperor was hanged, he had to surrender, handed over 30,000 taels of silver, sought self-preservation, and was still imprisoned.