How to save a section of pages in a PDF as a new PDF file

Hello everyone!
I'm Lu Ban·, a fat man who is keen on scientific research and soft development!

1. Using the Chrome browser, open a PDF file.
2. Click Print, select the page to be processed at [Web Page], and [Target Printer] is [Save as PDF].
   3. Click [Save] at the bottom right.

Reliable content, pay attention and don't get lost.