Why should they care?
As far as the PRC is concerned:
1. If it falls in the ocean: No problem.
2. If it falls on land in a foreign country: Not OUR problem. No problem.
3. If it falls in China on uninhabited land: No-one got hurt. No problem.
4. If it falls in China and kills anyone: We have plenty more people where they came from and we control the media and all communications. No problem.
So why should they care?
From a talk i heard many years ago from a lead scientist who was there: Back in the late 1970s, China was very interested in nuclear power and came to Canada. Canada wanted to sell them CANDU reactors and the Chinese wanted Canada to give them the technology for free. Needless to say, no deal was struck back then. But Canadian reactor designers and engineers went over to China to see their research facilities. On one wall was bunch of pipes and machinery that was obviously very hot: When they asked what it was, they were told it was a prototype for the LIQUID SODIUM coolant handling for a fast breeder reactor. There were no safety measures: Just right out in the open in the open air. No shields, not even a fire extinguisher. One tiny leak and they would have devastated the entire area.
The Canadian guys got away from that thing fast and asked how they could do that. The response was oblique, but along the lines of "the cultural revolution has only been over for a short while, so if these scientists die in an accident there's still plenty of scientists out in the paddies picking rice who we can get".
Makes you think...