The Mongolian rulers over China knew that they represent only a tiny demographic minority. In order to create permanent political unity, harmony and to continue their expansion, the Mongols first had to integrate the already subjugated peoples into a special social system. For this reason, a reform policy was implemented in 1252, which was based on the memorandum of Liu Bingzhong 刘秉忠, a former monk of the Buddhist chan sect.
In order to structure the society of his empire, Kubilai Khan classified the population hierarchically in a total amount of 4 different levels. In this way, and with the help of Chinese advisers, Kubilai Khan succeeded in forming a dynasty whose system made it possible to bridge the cultural differences in the population. This was especially true for the Chinese, highly civilized majority and the small number of Mongolian ruling classes. In the system of this classification, the Mongolian rulers took into account the length of integration into the Mongol Empire. Due to this hierarchy, this system influenced everything related to social life, administrative, judicial and tax matters. There was a strict division between the 4 diffrent social levels, which excluded marriages between the groups. This new social system continued to challenge the traditional Chinese social system.
The Mongolian social system should not be viewed as a system of "4 classes" because the ranks differed from one another through legal and institutional aspects, but did not imply any economic status or social power. This becomes particularly clear with regard to the southern Chinese population, as their social relationships among themselves barely changed, even after the conquest of the Mongol rulers, and the integration into the social system.
The social rank of the Mongols
According to the chuogeng-lu, the top privileged social group included the Mongol rulers and their race themselves,. Within these tribal groups, a distinction was also made between the military aristocracy and the common people. They were the privileged people, but on the other hand made up only 1.5% of the total population. The summary of this Mongolian elite population under the designation "Rank of the Mongols" tends to suggest the image of an internally coherent group. However this social group also implied social differences.
The social rank of the semuren
The semuren 色目人 formed the second social rank. This social group implied the Central and Near Eastern vassals of the Mongols. These were in particular the high cultures of the Turks (including Uighurs, Kharluks, Naimans, Tuvas), Tibetans, Tanguts, Russians, Persians and Syrians. Gernet explicitly defines the Persian population as Iranian merchants from the Amu-darja basin, who are known under the name Sarten. The semuren were distinguished by the fact that they were neither Mongolian, nor Chinese, and also weren't influenced by the Chinese culture. In most cases they were Muslim and more loyal to the Mongol rulers than the Chinese subjects. This earned them a special position within the Chinese state system. If one looks at the population of the semuren, it#s obvious that there population, equally to the Mongolian population, represented only 1.5% of the total population of the Yuan Dynasty.
The social rank of the hanren
The third population level comprised 8 groups of residents of northern China, who were summarized within the the social rank of the hanren 汉人 (Han people). All Chinese people of the former Jin 金 empire, as well as Northeast Asians such as Khitan, Jurchen and Koreans are integrated into this group. The Hanren made up 14% of the total population of the Yuan Empire.
The social rank of the nanren
The social rank of the nanren 南人 (southern people) was the lowest in the ranking of Chinese society and was added in 1275, after the conquest of the southern Song 南宋 dynasty. This social group comprised the xin furen 新 夫人 (newly affiliated people). Other names for this social rank were nanzi 南 子 (southerners) or manzi 蛮子 (savages). They made up the majority of the total population of the Yuan Empire (> 80%). Their low social status implied that they were barred from holding high office positions. Disadvantages also became apparent in the form of tax payments.
Impermeability of society
Specific administrative institutions of the Mongols, unknown to the Chinese population, such as the garrisons, continually highlight the alien character of this dynasty. In many regions, the garrisons played an important role, including in relation to understanding between the Chinese and Mongols, which meant that the social division into the four different ranks of society was not felt too drastically. Especially in the south, where the position of high administrative position from darughachi (state commissioner) could also be transferred to the Chinese.
Ranking based on occupations
From the source of the tiehan xinshi
铁 函 心 史 it can analyzed that, in addition to the social ranks, a differentiation was made according to occupations. This emphasizes the importance of the semuren, who, mostly as civil servants and administrative employees, occupied the highest positions in the social hierarchy. This hierarchy also shows the reversal of the traditional Confucian social order, and implies the low position of Confucian scholars. Only prostitutes, beggars and slaves were subordinate to them. The unequal legal status of the population classes is clearly documented by the laws, ordinances and legal cases of legal compilations such as the yuan dian-zhang
元 典章.