http://www.scmp.com/news/china/society/article/2138951/archaeologists-confident-they-have-found-body-fabled-chinese
And for earlier disagreement:
http://www.scmp.com/article/702787/state-war-over-henans-claim-have-found-fabled-rulers-tomb
No weapon finds or interesting tomb-paintings mentioned, sadly.
Interesting.
But not much direct evidence of anything described in those articles...