though smaller sample size admittedly.
I suspect you know a lot more than I do about construction norms, but given wider picture of migrant laborer treatment and workplace safety in PRC
I think the HK fatality rate of 20 is more realistic baseline baseline for estimating PRC as a whole

Id expect HK to have much better data collection and somewhat better safety standards than mainland, this study says 2x construction fatality rate of US

Chiang, Yat-Hung, et al. "Fatal construction accidents in Hong Kong." Journal of construction engineering and management 144.3 (2018): 04017121.

Yeah, my read of this meta-analysis is "the data collection is terrible. Though ymmv

Fitzgerald, Simon, et al. "Occupational injury among migrant workers in China: a systematic review." Injury prevention 19.5 (2013): 348-354.

I'm genuinely curious. I hadn't seen the Chinese injury stats before. PRC has significant data quality issues with many official stats, from crime to infant mortality. So I would personally be pretty skeptical of their injury stats, but I've never looked into construction safety specifically.

Are the Chinese figures subject to the usual underreporting and data collection issues within the PRC?

Caramel/butterscotch, whatever is going on bottom left

You were right on the Reese's but this is madness

I implore you to do some basic reading on this topic

are you an attorney?