1. Click the Insert-Object button;

2. Pop up the Object button, select the tab of file creation, and click the Browse button;

3. Pop up the browse dialog box and select the document to be inserted;

4. Click the Insert button to return to the Browse dialog box and select the Link to File check box;

5. After inserting a document in word, when the content of the inserted original document is modified, when opening the document, you will be prompted whether to update the content of the current document. If you want to update, you must select Yes, otherwise it will not be updated automatically.