First of all, I want to insert a new page in the middle of the article or anywhere else. For example, I want to insert a blank page before the "office order" paragraph, as shown below:

Secondly, put the mouse cursor in front of the title "Office Order", and then click the "Insert" option in the menu options, as shown below:

Third, click the "Blank Page" option under the "Insert" option, as shown below:

Fourthly, a new blank page has been successfully inserted into the document, as shown below: