The content and period are different.
1. Different contents: "Pingyang Quanshu" mainly uses specific travel experiences as the background to introduce Europeans' understanding of Eastern culture at that time. "Five Secrets of Geography" is an important work on ancient European geography, mainly involving knowledge of physical geography and human geography.
2. Different periods: "Pingyang Quanshu" was written in the 14th century, and "Five Secrets of Geography" was written in the 2nd century.