I know that there are a series of faux-findings. Because I believe I read one in a book...? About chicken bones being used. And I know that there is a black fossil market including fake fossils. But the west went through their own bone wars and it makes me think that perhaps this is just an alternative of that. But I think there are so few great discoveries here in America exclusively by this point on account of everything being so moist and developed (although I know bogs can preserve things). I believe all the latest findings coming out of China are all from a desert portion of the country. And that perhaps being under-developed in that space and perhaps faults being exposed by say...earthquakes or something make the striation more visible which in turn leads to more fossils being detectable? I am not sure though, because I know very little about China as a whole and am not a geologist or a paleontologist.