What do you mean by layering and refining the subheadings?

The subtitle of each paragraph is a summary.

Function introduction

1. Use subheadings to organize many materials into categories, show materials and express themes from many aspects or angles, and make the writing clear;

2. Can attract readers;

3. Let readers have a general understanding of the main content of the article before reading the full text;

4. Understand the content of the article more quickly and accurately in the reading process, and understand the writing intention;

5. Read the whole article and leave a deeper impression.

There are generally two ways to write subheadings: one is to organize materials according to the internal relations of several aspects of things and set the title (horizontal structure);

Second, organize materials according to the development stages of things, and set the title (vertical structure);