Introduction:
Preface is the second order, which means to arrange in turn, before the formal content; Also known as preface, preface, preface, narration, thread, remark, introduction, etc. , is a subordinate article that mainly introduces the content and theme of the work, or the author's creative process, or comments on the work. In essence, the value of introduction and comment is different. In fact, there are both pure introductions and comments, as well as introductions and comments.
In ancient times, the preface was mostly placed at the back of the book, but now it is generally placed in front of the book. The preface placed at the back of the book is called postscript or postscript. The content and style of preface and postscript are roughly the same, so they can be collectively called preface and postscript. Generally, there is no postscript to ordering books. If you feel that the preface is incomplete, you can also have an afterword.
Form:
The preface written by the author himself is self-preface, and the preface written by people other than the author is different. No matter the preface or the preface of others, the preface usually precedes the text of the book and the postscript follows. But there are exceptions, such as Preface to Taishi Gong, which is put at the back of the book and becomes a special style. We often read another kind of preface in ancient Chinese, such as Liu Zongyuan's preface to Xue Cunyi, Han Yu's preface to Meng Dongye, and Li Bai's preface to the Spring Festival Evening Peach and Plum Garden, which belong to the "gift preface style" and are mostly beautiful, which is different from the preface.