The Airshow China typically has its collection of interesting models. Here’s a few of the concepts that are perhaps a bit further from representing a real military threat to anyone, but are fun to look at nonetheless.
The first is from Avicopter. It has no name and details are scant, but it’s a fun concept to look at:
Second is the wing folding unmanned aircraft, the ASN-213 from the Xi’an ASN Technology Group:
And the ASN-211 flapping wing air vehicle, of a mere 220 grams, with a span of 600 mm.