Hi Jos,
I wonder is this a false back edge or is it sharp? It looks like it sharp, and in that case its probably a type of dao has been mentioned in other forums as typical for Muslim minorities in northern China. The way it turns a little more up towards the tip instead of being more aligned with the handle for stabbing, is also pointing in this direction. So maybe not such a typical Niuwei dao / Oxtail dao type of blade?
Regards,
Klas
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