Do any good topolect maps exist for Chinese? I've been rummaging through English dialect maps. Here's an example of one on Twitter:


  


And an American one for good measure:


  


Do any good topolect maps exist for Chinese?
I am not sure if this is what you were looking for, but there is a book that does this kind of study 中国语言地图集.

You can refer to 知乎 for some examples.