Per the article they are forecast to add 300 GW of renewables each year, which is admirable. But they also started construction on just under 100 GW of new coal power plants last year, and granted approvals for yet more in the future. [0]

You could quibble at the margins (some of it will be replacing EOL coal plants, some of it is intended as firming capacity only, etc.). But in the big picture, it indicates that where the Chinese economy needs more energy supplied, renewables aren't yet suitable to fill a large portion of that need.

[0] https://www.carbonbrief.org/chinas-construction-of-new-coal-...