Where is it?

See if you can find the locations mentioned in the book Wild Swans.

You can use a conventional map. Let's look for a good map book at the library.

This site provides a search box.

Try typing in the following:

Yixian, Shanghai, Jinzhou, Hebei.

Then follow the links to see if you can locate where these places are. Are they in the North, South, East, West of China? If you can find the locations, then you can find the routes mentioned in the book.