Papers refer to articles published by scientific or social researchers in academic books or periodicals for scientific research, which are used to describe or present their own research results, review and evaluate predecessors' work summaries, with special emphasis on originality. There are academic papers, graduation papers, dissertations, scientific papers, achievement papers and so on. The classification of paper titles can reflect the key content embodied in each paragraph, and the classification format of paper titles is:

(A) the text of the Xiaosi Song.

(2) Each chapter of the paper adopts the font format of level 1, 2, 3, 4 and 5 titles.

Chapter: Title, No.2 bold, bold and centered.

Section: title, small three bold, bold, centered.

First-level title serial number: for example, 1, 2, 3, title 4 is bold, bold and top box.

Secondary title serial number: for example: (1) (2) (3) Title No.4 Song Ti, not bold, top box.

Third-level title serial number: for example, 1.2.3. The title is smaller than the fourth song, not bold and indented.

Four-level title serial number: for example, (1)(2)(3) The title is smaller than the fourth song, so it is not bold and indented.

Five-level title serial number: such as: ① ② ③ Title No.4, not bold and indented.