I have a couple of suggestions to make.
One is to continue to press for China to release death penalty statistics. Second, China runs four transplant registries whose statistics are reasonably reliable, because the hospitals report directly to the registries. They are in four different cities in China. One is in Hong Kong. The Hong Kong liver transplant registry used to be public; then I started quoting their figures, and they shut it down.
I would just say to China, make all data--obviously, not the individual data, but the aggregate--available from these four transplant registries. If you have that, and the death penalty statistics, I think you'd have a lot more transparency.