During the Ming and Qing Dynasties, officials at all levels had virtual titles. The highest honorary titles were Taishi, Provincial Division, Taifu, Shaofu, Taibao, Shaobao, Taizi Taishi, Prince Shao Shi, Taizi Taifu, Taizi Shaofu, Taizi Taibao, and Taizi Shaobao. The ministers of the border added titles or gave them to officials after their death, which were generally called palace titles. After Xianfeng, the "teacher" was no longer used, but "Bao" was used instead.

During the Qianlong period, it was concretized, and the deputy commander and the assistant minister of the Ministry of Industry went to Tibet to handle affairs. In the end, the official manages the ministers of the courts, punishments, rituals, households and officials, and co-organizes the university students.

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In fact, official security is a long-lasting means of social control in China's feudal dynasty. The so-called Baojia is a way of population control with "family" as the basic unit of social organization.

At first, in the Han Dynasty, five families were Wu, ten families were Shi and a hundred families were Li. In the Tang Dynasty, four families were neighbors, five neighbors were Bao and a hundred families were Li. In the Northern Song Dynasty, Wang Anshi put forward that ten families were a guarantee, five guarantees were a big guarantee and ten guarantees were all guaranteed. In the Ming and Qing dynasties, the imperial power was concentrated in the emperor, and there was "official protection".