Or rather they did not - they just re-defined what a black hole is and then created that.
I just made a black hole (subject to definition) in my office with a felt tip pen - works for me...
Agreed. A title like 'microwave sink created in Chinese lab' would be a lot more descriptive. This is just linkbait.
The fact that they can absorb 100% of microwave radiation is interesting, it would be very interesting if the could turn it into electrical current instead of heat.