Comments - inter681

Ah sorry for the confusion. In that case Guoxue123.com
is actually a collection of Qing-era maps which includes sub-(China's) provincial divisions. The names are all in Chinese but the borders are easily distinguishable, and the first map contains an English legend. Hopefully you can find them helpful.

This is THE authoritative map of late Qing China (in Chinese):
www.guoxue123.com/other/map/pic/16/02.jpg
For post-revolution China this wikipedia page is acutally quite useful, see the map on the right side:
en.wikipedia.org/wiki/Beiyang_government
Though I would say most provinces deserve a partition into two or three states given their population and size, for example Yunnan province is actually larger than modern Germany.