The vastness of the continental routes networks, the ultra-long duration of use, the diversity of heritage remains and their dynamic interlinks, the richness of the cultural exchange they facilitated, the varied geographical environments they connected and crossed, clearly demonstrates the extensive interaction that took place within various cultural regions, especially the nomadic steppe and settled agrarian/oasis/pastoral civilizations, on the Eurasian continent between the 2nd century BC and the 16th century AD.