Yes China needs to address it and they are a signatory to the Paris Accord. But with Trump pulling out of that Accord in 2016 meant China either reversing its policy or putting it on hold.
But they subsequently agreed to honour their commitment once Biden rejoined the Paris Accord:
I don't think China ever planned to honour their commitments whether trump, biden or obama was in office. They literally give 2 shits about the environment. They overfish the seas often illegally going into other countries' EEZ, their AQI is among the worst in the world, they engage in unprecedented levels of nuclear waste water dumping, 80-90% of their ground water is unusable. Like literally 0 fucks given about the environment.
China are moving towards EVs at far more rapidly than numerous Nations around The Globe. Who knows now whether they will reduce their usage of coal, especially with Trump's stubbornness to honour The Paris Accord!!
So the Chinese EV revolution is very debatable. They come out with a government initiative, i.e. becoming the world leader in EVs. The CCP dumps trillions of dollars into developing this industry providing massive subsidies into provincial and local governments with the simple mandate of producing quantity, definitely not quality. The subsidies filter down with each branch of government taking their cut along the way (starting at the top officials.) Companies are usually rewarded with bigger subsidies if production quotas are met with no regard to safety standards or quality control. What you end up having is substandard EVs being produced and not even Chinese consumers want them. As a result they try to dump these products on Europe, SA, Africa. The QC issues are well reported in places like Australia with one of the "higher" end brands like Xiaomi have significant rust issues after 1 year, brakes and electronic systems malfunctioning, air bags not deploying, etc.
What has ended up happening are these massive EV graveyards in China where these useless EVs are left to rot. There is plenty of evidence and drone footage of this. Same thing happened with their E-bike revolution. Just mass e-bike graveyards everywhere in China. Also not to mention, their lithium extraction process have been heavily criticized both from an environmental standpoint and a human rights POV.
Again China gives 2 shits about the environment. It is all a facade for the exterior world. They say one thing and behind closed doors they do the exact opposite.