1. Take a 30-page package as an example. Select bao on page 30 and insert a bookmark. Word will automatically provide you with a book signature: bag. You can also change the book signature to your favorite name, for example, change it to Bao according to your requirements and press Add.

2. Go to page 60, find bo, and insert the cross reference-find the bookmark in the reference type, and then find the defined bookmark in the bookmark list below: bao, select the page number in the reference content on the right, click Insert, then select the bookmark text, and click Insert. Close the cross-reference, return to the document, add comments before the inserted page number, such as "View Page Number", and add "Page Number" after the page number. This completes the reference to Bao on page 30: see Bao on page 30. Define the bookmark repeatedly as bo on page 60, and insert a cross-reference on page 30.

In the future, no matter how the document is modified, the inserted cross-reference page number will be automatically updated.

PS: There are many similar cross-references, such as chapter number, drawing number and table number.