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It seems that questions about resources are generally accepted on the site. If not, please let me know.

I was wondering if anyone knew where to find maps with isoglosses for dialects of Mandarin. I am especially interested in phonemic features, such as

  • erhua
  • mergers, such as eng/en, in/ing, x/sh etc.
  • regional differences in tones

but anything would be interesting.

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The shapes of Isogloss maps are generally identical to those of dialect maps. So I think this could give you some clues. enter image description here

Below is a sample for isogloss maps(from enter image description here
More of them:

enter image description here enter image description here enter image description here

Suggestion: For more information about isogloss maps, visit and type in "同言线". Further reading: This is a book about chinese linguistic geography. For more books in this subject, search "汉语方言地理学".

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You can try 乡音苑(phonemica), it has dialects map in both English and Chinese, maybe you can find isogloss maps.

enter image description here

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