There is much poverty in China outside of major cities and near nonexistent safety net in all regards. This is a country where a sizable chunk of population lives on less than 6 USD per day (not enough to bribe the doctor to get "universal" healthcare in case of something serious) and where the gov has recently made posting videos of poor people on social media punishable as "against national interest".

You also should be aware about the amount of coal power plants it runs and keeps building (https://www.wsj.com/articles/china-takes-the-brakes-off-coal...).

It is a good time to ask ourselves which country contributes the most to emissions and crucial to avoid any mental gymnastics while at that. But unfortunately yes if you dramatically reduce coal usage in China people will die.