Speaking of which, let's introduce it by the way! Nine Magistrates, that is, the commander-in-chief of the step army, who often appears in the dramas of the Qing Palace, is definitely a high-powered position in Beijing, and ministers who are not close to the emperor can't do it! As the organizational system responsible for the security task in Beijing, the step army commanded the yamen, and the emperor gave his life to you for protection. How can an ordinary minister be competent? Famous infantry commanders in history include Longkeduo, Xiaoshenyang, Agui and Rong Lu.
The chief executive of "Step Army Commanding the Yamen" is called "Step Army Commanding" for short, commonly known as "Nine Magistrates". Mainly responsible for the security and access control inside and outside the nine gates of Beijing's inner city (Zhengyangmen, Chongwenmen, Xuanwu Gate, Andingmen, Deshengmen, Dongzhimen, Xizhimen, Chaoyangmen and Fuchengmen), and also responsible for night patrol, fire fighting, establishment, security and prohibition.
The Nine Magistrates were in charge of the Eight Banners Infantry of Manchu, Mongolian and Han armies, the Horse Infantry of green camp, the capital (the "patrol camp"), 16 administrative agencies in the inner and outer cities and the Baitashan Artillery Management Department. The troops have remained at around 30,000 for a long time, with capable personnel and excellent equipment. The Eight Banners Infantry Battalion is mainly stationed in the inner city, and five patrol battalions are distributed in the outer city and suburbs.
During the Shunzhi period, five envoys were set up in Baita Mountain (now Qiongdao in Beihai). If there are riots, enemy situations, fires and explosions in Beijing, they will be "ordered to fire" with gold medals; Each of the nine inner doors has five letter cannons. As soon as the White Tower fires, nine guns will burst into flames. After hearing the guns, the officers and men stationed in Beijing immediately gathered separately to stand by and watch. After eight years of Qianlong, the letter gun and its management system were handed over to Bujun and Yamen.
To sum up, Jiumen Prefect is just a colloquial name for the prefect of the yamen of Bujun, which is actually a different name from the commander of Bujun, similar to the current commander of Beijing garrison. In the Qing dynasty, the commander-in-chief of the infantry army was directly subordinate to the emperor, which was an extremely important official position.