1. Select all characters first.
2. There are two solutions to the problem that line spacing cannot be modified. One is to cancel the grid. First, let's click Start, and then click the paragraph logo below.
3. Uncheck If a document grid is defined, it will be aligned with the grid. Our document has its own grid form by default, and our Microsoft Yahei grid line spacing is very large by default, which can be achieved by forced dislocation.
4. The second method is to set the row spacing to a fixed value, and the default row spacing is single row spacing.
5. After setting the fixed value, we can set the fixed value according to the corresponding situation, and we can adjust it to 20.