Good point. But one factor is China is also greatly reducing their emissions. For instance, their pollution levels have plummeted after enacting strict controls:
https://epic.uchicago.edu/insights/china-has-quickly-and-sha...
Still, that is a good point, a lot of the emissions from manufacturing have been shifted to other countries.
>China is also greatly reducing their emissions
Are they? because looking at these charts[0], although fossil fuel use as a percent of total energy may be going down, the absolute values for coal, gas and oil only go up year over year.
[0]https://ourworldindata.org/profile/energy/china#what-sources...