1. First, the following conditions will be displayed in the worksheet, that is, the ribbon is hidden.

2. To restore to the following state, please continue to perform the following steps.

3. First, we have an independent view, and then click "Expand Project".

4. Then look at the box shown in the figure below and right-click.

5. Then, the hook that hides the ribbon will be deleted so that it can be restored to its original functional state.