I wouldn't call it "a lot" when you put it into perspective.
China has about 60GW of nuclear generation capacity - this is after 70 years of building their first nuclear plant. It has about 1600GW of wind and solar after about 10 years.
In 2024, China added 80GW of wind capacity and 277GW of solar. In the first 3 months of 2025 alone, 60GW of new solar capacity and 15GW of new wind capacity were added. In 2024, 4.3GW of nuclear was added.