I guess you didn't read the paper.
All the artical is about the era of republican-China (i.e before 1949) except only one partial data (total death number) of 50-51. The data about "Number of exposed corpses and abandoned coffins" even only before 1938.
What doesn't that mean? That means you provide some evidence that inderectly support the idea that a govenment of "None-Regime" with less control over its citizen's life similar to India could cause many abandoned dead people. The republican-China before 1949 was the one that overthrowned by currrent "regime". The one that was thrown happened to be more like India in many ways excpet at that time there was no real election yet.
The same "Republic of China" still exist today. It's formal name of Taiwan. There are NO long time exposed dead people in normal place in China. I mean NONE, not few vs many. The story of above ID is totally fake.
I believe there are NO long exposed dead people in Taiwan today either. But before 1949 it was a weak government managed a much larger population with much much less control
compare to today's "Regime-China"