This thesis is to study the structural change of a character in Yin-Xu(the old plains of Yin Dynasty) oracle bone from the viewpoint of Wu-Qi(five periods) and Zhen-Ren-Zu(the groups of fortune-tellers).
First we address the primitive characteristics of oracle bone characters and their effects on the structure of characters. Secondly we discuss the structure of oracle bone characters such as [variation of components in a character], [diversity by the development of a character] and [change between different periods or different Zhen-Ren-Zu].
For the [variation of components in a character], we point out four systematic phenomena such as [increment of components], [substitution of components], [misuse of components] and [simplification of components].
On the other hand, for the [diversity by the development of a character], we discuss [phonetic symbol phenomena] and [ramification phenomena].
Finally for the [change between different periods or different Zhen-Ren-Zu], we indicate the [different structural phenomena of the same character appearing in the different Zhen-Ren-Zu], and further discuss [phenomenon of using different characters about same vocabulary] and the [phenomenon of using different vocabularies about same meaning].