Zheng Xuan’s (鄭玄)theory of Zheng-Li (正禮)is defined as the standard of rites, and at the same time it is the criterion for value judgment. As a criterion for rituals, the content includes rituals and rituals, which originate from the pre-Qin Confucian classics. In terms of form, it is based on the ceremony of Yi Li (《儀禮》)as a model, and it is a practical and on-site . The connotation of Zheng-Li , including content and form, is a criterion for value judgment and can be used as a basis for judging the behavior of the role of the public domain.
The theory of Zheng Li is based on the text of Yi Li,and used the standard ceremony as a structural model. Therefore, the development of the theory is also based on the ceremony structure.
The main formal structure of the theory of Zheng Li is the form of ceremony , the space of ceremony and the time of ceremony . The form of ceremony, the space of ceremony and the time of ceremony in the structure have the function of expressing meaning in the theory of Zheng Li . The expression of this meaning is mainly to define the identity of personnel.
The form of ceremony defines the identity of the ceremony personnel, and can select, shelve and convert the identity of the ceremony personnel. the space of ceremony defines the ceremonies as "Wei(位)," and forms an image of the order in the ceremonial space, which becomes the identity and relational image of all participants in the ceremony. the time of ceremony symbolizes the identity of the dead and the dead in the ceremony, as well as the relationship between the living and the dead and the changes in feelings.
The structural elements of the ceremony, including the form of the ceremony, the space of the ceremony, the time of the ceremony are all bounded. The boundary of the three is coincident with one another, which results in the interaction and infiltration of structural functions. At the same time, also let the theory of Zheng Li to produce a dual core structure, namely Qin Qin(親親)and Tsun Tsun(尊尊).
In addition, the elements of the ritual structure have abstract characteristics, so that it can be translated into concepts. The way to expand the ceremony space can be pushed by the "Wei(位)" and "Wei Su(位序)" to the image of the whole world.
The method of Zheng Xuan’s theory of Zheng Li(正禮) to govern the world is to govern the world by governing "Wei(位)." The governance rules of the theory are based on Zheng Li(正禮)to regulate people's identities and roles. At the same time, each person actively completes his own identity and role. When a person completes his or her own identity and role, he or she will produce its own requirements for the corresponding identity and role. Therefore, the theory implies the pursuit of ethical ideals.