When people discuss place names, they often ignore their time meaning and concepts, because the definition of a place name from the scope of space, without argument or surface, is demarcated by geographical coordinates and specific boundaries. But any space range, in fact, is related to a certain time range, this time range is long and short, and in this time range, place names are associated with many things and factors other than place names. 
in addition to the original intention, place names also have their historical, cultural, social, national and other aspects of significance.
The history and culture of place names