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
It's not about regulation. China has almost the complete photovoltaic production of the world. Essentially all panels installed in the rest of the world are also Chinese. It's about a smart government knowing which technologies to pursue, instead of things like the Spanish "sun tax" of the 2010s that killed whatever solar industry there might have been in the sunniest country in Europe.