Cultural Artifact?

It was a round-shaped, black colored object. Li could not figure what exactly was that as he had not seen something like this before in his life. He assumed it to be a medallion or pendant of a long gone dynasty. So, had he just found an antiquated object? Finding an ancient relic is not a big thing in that area. Many ancient objects had been discovered from its soil prior to this finding. However, this discovery was going to be different. Though initially, the thing did not interest him as he moved closer he noticed the weird design made on it. Surprisingly, it did not resemble any sign of past he remembered.