Well there'll always be plenty of western palaeontologists itching to dig around China, but my understanding is that the government's quite protective (when it comes to legitimate excavation...). It could be that they'd be more willing to let the fossil sites go untapped and left for pirate diggers (the best name I could come up with right now) and a nebulous future generation, rather than loosening restrictions for foreign scientists.
That said, I don't know the exact extent of the current restrictions. And it's probably not something we'll need to worry about until Xu Xing's generation grow too old to lead research.
