Last year, China generated 834 terawatt-hours of solar power.
Which is more than the G7 countries generated, and more than the US and EU combined. In fact the only country group that generates more solar power than China is the OECD, all 38 countries of it.
Data: @ember-energy.org
Source: https://bsky.app/profile/nathanielbullard.com/post/3lsbbsg6ohk2j
Pollution per GDP is a bad measure. Mali has a high CO2 intensity, but the GDP per capita is low, so pollution is low. The best measures are emissions per capita in consumption and production terms. China is not a saint in either of those metrics, being rather close to the EU in both of them today.