That's what i call "stuck". Solar went from essentially zero to a larger share of generation than nuclear in China, in 5 years. In the same time, nuclear has stopped growing there. China commissions a few nuclear reactors per year and ~400 GW per year of solar and wind.

When comparing nuclear in China, we need to compare it with... well other things that happen in China. Which are on a completely different scale vs rest of the world combined.

Nuclear power progress might seem impressive there compared to rest of the world, but not at all compared to other things that are being done in China itself.