Is there a particularly simple way to tell fortune without turning on the computer?

A simple calculation is a perpetual calendar. If you want to add a fortune-telling book (for the lunar calendar) or a book of this constellation (for the solar calendar) such as Gao Dian Yi Jing, basically all the life you looked up online is written in these books, which is not difficult to understand.

This method is very simple. You just have to look at the page number of the book. The words are all in Chinese, you know.